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 Title Page
 Como usar este estudio de...
 Table of Contents
 Introduction
 How this survey was made
 General soil map
 Descriptions of the soils
 Use and management of the...
 Formation and classification of...
 General nature of the area
 Glossary
 Literature cited
 Guide to mapping units
 Map
 Index to map sheets: Mayaguez area,...
 Map
 General soil map






Group Title: Soil survey of Mayaguez area of western Puerto Rico (Area de Mayaguez Puerto Rico).
Title: Soil survey of Mayaguez area of western Puerto Rico (Area de Mayagüez Puerto Rico)
CITATION PAGE IMAGE ZOOMABLE
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00027411/00001
 Material Information
Title: Soil survey of Mayaguez area of western Puerto Rico (Area de Mayagüez Puerto Rico)
Physical Description: ii, 296 p., 41 fold. leaves of plates : ill. ; 28 cm.
Language: English
Creator: Gierbolini, Roberto E
United States -- Soil Conservation Service
University of Puerto Rico (Río Piedras Campus) -- College of Agriculture and Mechanic Arts
Publisher: The Service
Place of Publication: Washington
Publication Date: [1975]
 Subjects
Subject: Soils -- Maps -- Puerto Rico -- Mayagüez Region   ( lcsh )
Soil surveys -- Puerto Rico -- Mayagüez Region   ( lcsh )
Genre: federal government publication   ( marcgt )
bibliography   ( marcgt )
non-fiction   ( marcgt )
 Notes
Bibliography: Bibliography: p. 296.
Statement of Responsibility: by Roberto E. Gierbolini, United States Department of Agriculture Soil Conservation Service in cooperation with University of Puerto Rico College of Agricultural Sciences.
General Note: Cover title.
General Note: English and Spanish.
Funding: U.S. Department of Agriculture Soil Surveys
 Record Information
Bibliographic ID: UF00027411
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: Government Documents Department, George A. Smathers Libraries, University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: aleph - 002821913
oclc - 02820412
notis - ANV0438
lccn - 76600686

Table of Contents
    Title Page
        Title
    Como usar este estudio de suelos
        Unnumbered ( 2 )
    Table of Contents
        Page i
        Page ii
    Introduction
        Page 1
    How this survey was made
        Page 2
    General soil map
        Page 3
        Associations of the coastal plains
            Page 4
            Bejuco-Jobos association
                Page 4
            Coto-Aceitunas association
                Page 5
        Association of the limestone uplands
            Page 5
            Colinas-soller association
                Page 6
            Limestone outcrop-San Sebastian association
                Page 6
        Associations of the flood plains
            Page 7
            Coloso-Toa association
                Page 7
        Associations of the volcanic rock uplands
            Page 8
            Voladora-Moca association
                Page 8
            Caguabo-mucara association
                Page 9
            Consumo-Humatas association
                Page 9
            Nipe-rosario association
                Page 10
            Descalabrado association
                Page 11
    Descriptions of the soils
        Page 12
        Aceitunas series
            Page 12
            Page 13
            Page 14
            Page 15
            Page 16
            Page 17
            Page 18
            Page 19
        Aguilita series
            Page 20
            Page 21
        Aibonito series
            Page 22
        Alluvial land
            Page 23
        Anones land
            Page 23
            Page 24
        Bajura series
            Page 25
        Bejucos series
            Page 26
        Cabo Rojo series
            Page 27
            Page 28
        Caguabo series
            Page 29
        Camaguey series
            Page 30
        Catano series
            Page 31
            Page 32
        Cidral series
            Page 33
        Coastal beach
            Page 34
        Colinas series
            Page 34
            Page 35
            Page 36
        Coloso series
            Page 37
        Consumo series
            Page 38
            Page 39
        Corcega series
            Page 40
        Cotito series
            Page 41
        Coto series
            Page 42
            Page 43
            Page 44
        Cuchillas series
            Page 45
            Page 46
        Daguey series
            Page 47
            Page 48
        Delicias series
            Page 49
        Descalabrado series
            Page 50
            Page 51
        Dique series
            Page 52
        Espinal series
            Page 53
        Guanajibo series
            Page 54
            Page 55
        Guerrero series
            Page 56
        Humatas series
            Page 57
            Page 58
            Page 59
        Igualdad series
            Page 60
        Jacana series
            Page 61
        Jaucas series
            Page 62
        Jobos series
            Page 63
            Page 64
        Juncal series
            Page 65
        Lares series
            Page 66
            Page 67
        Levelled clayey land
            Page 68
        Levelled clayey land, shallow
            Page 68
        Levelled sandy land
            Page 68
        Levelled sandy land
            Page 69
        Limestone outcrop
            Page 69
        Los Guineos series
            Page 70
            Page 71
        Mabi series
            Page 72
        Malaya series
            Page 73
            Page 74
        Maleza series
            Page 75
        Mani series
            Page 76
            Page 77
        Maresua series
            Page 78
        Mariana series
            Page 79
            Page 80
        Maricao series
            Page 81
        Matanzas series
            Page 82
        Moca series
            Page 83
            Page 84
            Page 85
        Montegrande series
            Page 86
            Page 87
        Morado series
            Page 88
            Page 89
        Mucara series
            Page 90
            Page 91
        Naranjo series
            Page 92
        Nipe series
            Page 93
        Palmarejo series
            Page 94
            Page 95
        Perchas series
            Page 96
        Plata series
            Page 97
        Quebrada series
            Page 98
            Page 99
        Reilly series
            Page 100
            Page 101
        Rio Lajas series
            Page 102
        Rio Piedras series
            Page 103
        Riverwash
            Page 104
        Rosario series
            Page 104
            Page 105
        San German series
            Page 106
            Page 107
        San Sebastian series
            Page 108
        Santa Clara series
            Page 109
        Santa Marta series
            Page 110
        Santoni series
            Page 111
        Serpentinite outcrop
            Page 112
        Soller series
            Page 113
            Page 114
            Page 115
        Talante series
            Page 116
        Tanama series
            Page 117
            Page 118
            Page 119
        Tidal swamp
            Page 120
        Toa series
            Page 120
        Voladora series
            Page 121
            Page 122
    Use and management of the soils
        Page 123
        Capability grouping
            Page 124
        Management by capability units
            Page 125
            Page 126
            Page 127
            Page 128
            Page 129
            Page 130
            Page 131
            Page 132
            Page 133
            Page 134
            Page 135
            Page 136
            Page 137
            Page 138
            Page 139
            Page 140
            Page 141
            Page 142
            Page 143
            Page 144
            Page 145
            Page 146
            Page 147
            Page 148
            Page 149
            Page 150
            Page 151
            Page 152
            Page 153
            Page 154
            Page 155
            Page 156
            Page 157
            Page 158
            Page 159
            Page 160
            Page 161
            Page 162
            Page 163
            Page 164
            Page 165
            Page 166
            Page 167
            Page 168
            Page 169
            Page 170
            Page 171
            Page 172
            Page 173
            Page 174
            Page 175
            Page 176
            Page 177
            Page 178
        Estimated yields
            Page 179
            Page 180
            Page 181
            Page 182
            Page 183
            Page 184
            Page 185
            Page 186
            Page 187
            Page 188
            Page 189
            Page 190
            Page 191
        Use of the soils for woodland
            Page 192
            Page 193
            Page 194
            Page 195
            Page 196
            Page 197
            Page 198
        Engineering uses of the soils
            Page 199
            Page 200
            Page 201
            Page 202
            Page 203
            Page 204
            Page 205
            Page 206
            Page 207
            Page 208
            Page 209
            Page 210
            Page 211
            Page 212
            Page 213
            Page 214
            Page 215
            Page 216
            Page 217
            Page 218
            Page 219
            Page 220
            Page 221
            Page 222
            Page 223
            Page 224
            Page 225
            Page 226
            Page 227
            Page 228
            Page 229
            Page 230
            Page 231
            Page 232
            Page 233
            Page 234
            Page 235
            Page 236
            Page 237
            Page 238
            Page 239
            Page 240
            Page 241
            Page 242
            Page 243
            Engineering classification systems
                Page 244
            Estimated engineering properties
                Page 244
            Engineering interpretations
                Page 245
            Engineering test data
                Page 245
                Page 246
                Page 247
                Page 248
                Page 249
                Page 250
                Page 251
        Use of the soils for town and country planning
            Page 252
    Formation and classification of the soils
        Page 253
        Factors of soil formation
            Page 253
            Page 254
            Page 255
            Page 256
            Page 257
            Page 258
            Page 259
            Page 260
            Page 261
            Page 262
            Page 263
            Page 264
            Page 265
            Page 266
            Page 267
            Page 268
            Page 269
            Page 270
            Page 271
            Plants and animals
                Page 272
                Page 273
                Page 274
                Page 275
                Page 276
                Page 277
                Page 278
            Climate
                Page 279
            Parent material
                Page 280
            Relief
                Page 280
            Time
                Page 281
        Processes of horizon differentiation
            Page 281
        Classification of the soils
            Page 282
            Page 283
    General nature of the area
        Page 284
        Geology and relief
            Page 285
        Water supply
            Page 286
        Climate
            Page 286
            Page 287
            Page 288
            Page 289
            Page 290
            Page 291
            Page 292
    Glossary
        Page 293
        Page 294
        Page 295
    Literature cited
        Page 296
    Guide to mapping units
        Page 297
        Page 298
        Page 299
        Page 300
        Page 301
        Page 302
        Page 303
        Page 304
        Page 305
    Map
        Page 67
        Page 68
        Page 69
        Page 70
        Page 71
        Page 72
        Page 73
        Page 74
        Page 75
        Page 76
    Index to map sheets: Mayaguez area, Puerto Rico
        Page 77
        Page 78
    Map
        Page 1
        Page 2
        Page 3
        Page 4
        Page 5
        Page 6
        Page 7
        Page 8
        Page 9
        Page 10
        Page 11
        Page 12
        Page 13
        Page 14
        Page 15
        Page 16
        Page 17
        Page 18
        Page 19
        Page 20
        Page 21
        Page 22
        Page 23
        Page 24
        Page 25
        Page 26
        Page 27
        Page 28
        Page 29
        Page 30
        Page 31
        Page 32
        Page 33
        Page 34
        Page 35
        Page 36
        Page 37
        Page 38
        Page 39
        Page 40
        Page 41
        Page 42
        Page 43
        Page 44
        Page 45
        Page 46
        Page 47
        Page 48
        Page 49
        Page 50
        Page 51
        Page 52
        Page 53
        Page 54
        Page 55
        Page 56
        Page 57
        Page 58
        Page 59
        Page 60
        Page 61
        Page 62
        Page 63
        Page 64
        Page 65
        Page 66
    General soil map
        Page 79
Full Text



SOIL SURVEY OF

Mayaguez Area of Western Puerto Rico

Area de Mayaguez

Puerto Rico


United States Department of Agriculture
Soil Conservation Service
In cooperation with
University of Puerto Rico
College of Agricultural Sciences



















COMO USAR ESTE STUDIO DE SUELOS


E STE STUDIO DE SUELOS contiene
informaci6n que puede usarse para
manejar fincas y bosques; para seleccionar
la ubicaci6n de caminos, charcas, edificios,
y otras estructuras; y para buscar la adapta-
bilidad de predios de terrenos para la agri-
cultura, la industrial, y la recreaci6n.

Para Localizar los Suelos
Todos los suelos en el area de Mayagiiez
se muestran en el mapa detallado en la
parte posterior de esta publicaci6n. Este
mapa consiste de muchas hojas compiladas
de fotografias areas. Cada hoja tiene un
nimero que corresponde al n6mero del ind-
ice de mapas.
En cada hoja del mapa detallado estan
delineadas e identificadas por simbolos las
areas de suelo. Todas las areas que tienen
el mismo simbolo son de las misma clase de
suelo. El simbolo esti dentro de la delinea-
ci6n o espacio; de otra forme esta afuera,
pero una flecha indica el area a que per-
tenece el simbolo.

Como Econtrar y Usar la Informaci6n
Se puede usar la "Guia a las Unidades
Cartogrificas" para econtrar information.
Esta guia es una lista de los suelos del area
en orden alfab6tico de los simbolos, y nos
da la clasificaci6n de capacidad de cada
uno. Tambi6n indica la pagina en que se
encuentra la descripci6n de la unidad de
capacidad y el grupo de adaptaci6n para
bosques del suelo.
Se pueden hacer mapas a colors que
demuestran la relative adaptabilidad o el
grado de limitaci6n de los suelos para usos
especificos, si se usa el mapa de suelo y la


informaci6n en el texto. Si ponemos mate-
rial translucente sobre el mapa de suelos,
podemos colorear los suelos que tienen la
misma limitaci6n o adaptabilidad. Por
ejemplo, suelos que tienen una limitaci6n
ligera pueden colorearse de verde. aquellos
que tienen una limitaci6n moderada pueden
colorearse de amarillo. y los que tienen una
limitaci6n several, se pueden colorear de
rojo.
Agricultores y personas que trabajan con
agricultores pueden aprender como usar y
manejar los suelos usando las descrip-
ci6nes y las discusiones de las unidades de
capacidad.
Das6nomos y otros pueden referirse a la
secci6n "Uso de los Suelos para Bosques".
donde los suelos del area estan agrupados
seglin su adaptabilidad para arboles.
Planificadores de comunidades v otros
pueden informarse sobre las propiedades
de los suelos que afectan la selecci6n de si-
tios para edificios y para areas de recrea-
ci6n, en la secci6n "Uso de los Suelos para
Planificaci6n de Pueblo y Campo."
Ingenieros y constructores pueden en-
contrar bajo "Uso de los Suelos Para In-
genieria" las tablas de datos de laboratorio.
propiedades de suelos estimadas. e infor-
maci6n sobre caracteristicas de suelos que
afecten las practices de ingenieria.
Los cientificos y otros pueden leer sobre
como se forman los suelos y sobre como
estan clasificados, en la secci6n "Forma-
ci6n y Clasificaci6n de los Suelos.'
A los recien Ilegados al area de Maya-
giiez les puede interesar la secci6n "Mapa
General de Suelos", donde se described los
patrons amplios de los suelos. Tambien
pueden interesarse en la secci6n "Natural-
eza General del Area."


(See the inside of the back cover for the English versionn
of "How to Use This Soil Survey.")


La mayor parte del trabajo de campo de este studio de suelos se hizo en el period de 1961-66. Los
nombres y las descripciones de los suelos se aprobaron en 1967. A menos que se indique de otra manera,
las exposiciones en esta publication se refieren a las condiciones en el area en el 1969. Este studio se hizo
cooperativamente por el Servicio de Conservacion de Suelos y el Colegio de Ciencias Agricolas de la Univ-
ersidad de Puerto Rico. Es parte de la asistencia tecnica que se le provee a los Distritos de Conservacion de
Suelos y Agua Oeste, Noroeste, Culebrinas, y Suroeste.
Los fotografos comerciales pueden hacer copias aumentadas o reducidas del mapa de suelos de esta
publication, o se puede comprarlos en ordenes individuals de la Division Cartografica, Servicio de
Conservacion de Suelos, Departamento de Agricultura de los Estados Unidos, Washington, D.C. 20250.


La Portada: Cania de az6car en los Ilanos aluviales del
area de Mayagiez.








Contents


How this survey was made ..................................................
General soil map ................................................................
Associations of the Coastal Plains ....................................
1. Bejucos-Jobos association ....................................
2. Coto-Aceitunas association .................................
Associations of the limestone uplands ...............................
3. Colinas-Soller association ........................................
00 4. Limestone outcrop-San Sebastian association .............
Q Associations of the flood plains .. ............................
5. Coloso-Toa association .. ............................
Associations of the volcanic rock uplands ..........................
6. Voladora-Moca association .....................................
7. Caguabo-Mucara association ................................
8. Consumo-Humatas association ..............................
9. Nipe-Rosario association .....................................
10. Descalabrado association ..... ......................
Descriptions of the soils ................................. .....................
A ceitunas series .............................................................
CQ Aguilita series ................................................................
A ibonito series ...............................................................
A llu v ial land ............................................................... .
A no nes series ................................................... ..........
B ajura series ............. ......................................
B ejuco s series ..................................................................
Cabo Rojo series ..........................................................
C aguabo series .................................................................
Camaguey series ............................................................
C atano series .................................................................
C idral series ..................................................................
C coastal beach .............................. .... ..............................
C olinas series ................................................................
C oloso series .................................................................
Consumo series ..............................................................
C orcega series .......................... ................................
C otito series ............................................. .....................
C oto series ....................................................................
C uchillas series ............................................................. .
Daguey series ...............................................................
D elicias series ................................................................
Descalabrado series ......................................................
D iq u e series s ..................................... ........................
E spinal series ................................................................
Guanajibo series .............................................................
Guerrero series ..............................................................
Humatas series ..............................................................
Igualdad series ...............................................................
Jacana series .................................................................
Jaucas series ...................................... .... ........................
Jobos series ...................................................................
Juncal series ..................................................................
L ares series ...................................................................
Levelled clayey land .......................................................
Levelled clayey land, shallow ..........................................
Levelled land. frequently flooded .....................................
Levelled sandy land ........................................................
Limestone outcrop ..........................................................
L im estone rock land ........................ ................................
Los Guineos series ..........................................................
M abi series ....................................................................
M alaya series .................................................................
M aleza series .................................................................
M ani series ....................................................................
M aresua series ...............................................................
M ariana series ...............................................................
M aricao series ...............................................................
M atanzas series ..............................................................
M oca series .................................................................. .
Montegrande series .........................................................
M orado series ................................................................
M ucara series ................................................................
N aranjo series ...............................................................
N ipe series ................................................................... .
Palm arejo series .............................................................
Perchas series ................................................................
Plata series ...................................................................
Q u eb rad a series s ...............................................................
R eilly series ...................................................................
R io l.ajas series ..............................................................


Contenido
Pagina

Como se hizo este catastro ...................................................... 2
Mapa general de los suelos ...................................... .......... 3
Asociaciones de los Llanos Costaneros ................................. 4
I. Asociaci6n Bejucos-Jobos ....................................... 4
2. Asociaci6n Coto-Aceitunas .................................... 5
Asociaciones de las alturas calizas ....................................... 5
3. Asociaci6n Colinas-Soller ........................................ 6
4. Asociaci6n Roca caliza aflorante-San Sebastian ........... 6
Asociaciones de los llanos inundables .............................. 7
5. Asociaci6n Coloso-Toa .......................................... 7
Asociaciones de las alturas volcAnicas .................................. 8
6. Asociaci6n Voladora-Moca ...................................... 8
7. Asociaci6n Caguabo-Mucara ................................... 9
8. Asociaci6n Consumo-Humatas ................................. 9
9. Asociaci6n Nipe-Rosario ........................................ 10
10. Asociaci6n Descalabrado .........................................
Descripcion de los Suelos .................... ............... .......... 12
Serie Aceitunas ............................................................... 12
Serie Aguilita ..................... ..................................... ....2. 20
Serie Aibonito ............................................................ 22
Tierra aluvial .............................................. .............. 23
Serie Anones ................................................................ 23
Serie Bajura ......... ..................... ................. 25
Serie Bejucos ..................................... ...... 26
Serie Cabo Rojo ....................... ..... .............. ....... 27
Serie Caguabo ............................................ .............. 29
Serie Camaguey ................................................. ..... 30
Serie Catafio ................................................................. 31
Serie Cidral ..................................... ................. 33
PlayaCostanera ................................................................ 34
Serie Colinas ....................................... ........... .............. 34
Serie Coloso ............................................... .................. 37
Serie Consumo ............................................................ 38
Serie C6rcega ................................... ............... 40
Serie Cotito ..................................................................... 41
Serie Coto ................................................... .............. 42
Serie Cuchillas ........................................................... 45
Serie Daguey ................................................................. 47
Serie Delicias ...................................... .... ................ 49
Serie Descalabrado ........................................................... 50
Serie Dique ............................ ............................... 52
Serie Espinal ................................ .................................. 53
Serie Guanajibo ............................................. ............. 54
Serie Guerrero ............................................................... 56
Serie Humatas ................................................................. 57
Serie Igualdad ............................................................ 60
Serie Jacana ................................................................. ... 61
Serie Jaucas ........ ........................................................... 62
Serie Jobos ...................................................................... 63
S erie Ju ncal ..................................................................... 65
Serie Lares ............................................. .................... 66
Tierra nivelada arcillosa ........................................ ........ 68
Tierra nivelada arcillosa, poco profunda .............................. 68
Tierra nivelada, inundable con frecuencia ............................ 68
Tierra nivelada arenosa ...................................... .......... 69
Afloraciones calizas ........................................ ............ 69
Tierra roca caliza ...................................................... 69
Serie Los Guineos ......................................... .............. 70
Serie Mabi ................................................................... 72
Serie Malaya ..................................... ................ 73
Serie M aleza ................................................................ ... 75
Serie Mani ......................................... ..................... 76
Serie Maresuia ............................................................... 78
Serie Mariana ................................................................ 79
Serie Maricao ............................................................... 81
Serie Matanzas ..................................... ...... ............ 82
Serie Moca ................................................................. 83
Serie Montegrande ........................................ 86
Serie Morado ............... ............................................ 88
Serie M tcara ................................................................... 90
Serie Naranjo .................................................................. 92
Serie Nipe ...................................................................... 93
Serie Palmarejo ............................................................. 94
Serie Porchas .............................................. ................. 96
Serie Plata ....................................................................... 97
Serie Quebrada ................................................................ 98
Serie Reilly ............................................. ................. 100
Serie Rio Lajas ................................................................ 102








Contents-Continued


R io P ied ras series ..................................................
Riverwash ................................................................
Rosario series ......................................... ..................
San German series ..........................................................
San Sebastian series ........................................................
Santa Clara series ...........................................................
Santa Marta series ..........................................................
Santoni series ........... .......................... .........
Serpentin ite outcro p ................................................. .........
Soller series .............................. ......................
T alante series ......................... ......... ............... ................
Tanama series ............................................. ........
Tidal swamp ................................. ....................
Toa series .................................. .... .................
Voladora series ..............................................................
Use and management of the soils ................................... .....
Capability grouping ........ ...................... .... ........
Management by capability units ..... .......................
Estimated yields .........................................
Use of the soils for woodland ..........................................
Engineering uses of the soils ...........................................
Engineering classification systems .. ........................
Estimated engineering properties ..................................
Engineering interpretations ........................................
Engineering test data ........ ...... ...........................
Use of the soils for town and country planning ........................
Formation and classification of the soils ..................................
Factors of soil formation ..... ..................................
Plants and animals .................................... ................
C lim ate .................................................................. ....
Parent material ..............................................................
R relief ............................................ ............................
Time ........ .......................................
Processes of horizon differentiation ..................................
Classification of the soils ............. .... ........... .... ..............
General nature of the area ..................................................
Geology and relief ....................................... ......
Water supply ........... ......................... ................
C lim ate ................... ..................... .......................
G lo ssa ry ..........................................................
Literature cited .............................................................
Guide to mapping units ....................................... Following


Contenido-Continuacion

Serie Rio Piedras ...........................................
Detrito de Ribera de rios ............... ..............................
Serie Rosario ....... ....... .............. ... ...... .. ........
Serie San G erm an .............................................................
Serie San Sebastian ..... ................................
Serie Santa C lara ..............................................................
Serie Santa M arta .............................................................
Serie Santoni .... .... ....................... ...... ................
Afloraciones de serpentinita .............................. .......
Serie Soller ......... ... ... .. ............ ... ............. ..
Serie T alante ...... ....... .............. ....... ... .... ............
Serie Tanama .........................................
Pantano de m area ..... ... .. ............. .......................
Serie Toa ............... ......................
Serie V oladora ............................................
Uso y manejo de los suelos .. ..................................
Agrupaci6n de capacidad ................. ..............................
M anejo por unidades de capacidad ......................................
Producciones estimadas ............... .................... ........
Uso de los suelos para bosques .......................... .........
Uso de los suelos para ingenieria .. ...........................
Sistemas de clasificacion de ingenieria ................................
Propiedades de ingenieria estimadas .............................
Interpretaciones para ingenieria ..... .....................
Datos de pruebas de ingenieria .........................................
Uso de los suelos para planificaci6n de pueblo y campo .............
Formaci6n y clasificaci6n de los suelos .................. .............
Factores de formaci6n de suelo .. ............................
Plantas y anim ales ...............................
C lim a ............................. .. ...... ......... ...........
M material padre ......................................... ............
R believe ... ............ .. ............. ............ ............
Tiempo ................................. .....................
Process en la diferenciaci6n de horizontes .........................
Clasificaci6n de los suelos ............................................
Naturaleza general del area .. ...... ................ ..........
G eologia y relieve .............................................. ..............
Fuentes de agua .......... ................................. ..............
Clima ..................................... ...................
Glosario ............... ....... ............. ...... ... .... ...
Literature citada ......... ....................................
Guia a las unidades cartograficas ............................... Following


Issued December 1975
































ii






SOIL SURVEY OF MAYAGUEZ AREA OF WESTERN PUERTO

RICO

BY ROBERTO E. GIERBOLINI
FIELDWORK BY ROBERTO E. BIERBOLINI, GILBERTO ACEVEDO RAMOS, JOAQUIN TORRES MAS, ENRIQUE ORTIZ TORRES, JULIO E.
TRIGO, WILLIAM FRANCIA RIVERA, JUAN E. BRUNET, AND LUIS H. RIVERA, SOIL CONSERVATION SERVICE
UNITED STATES DEPARTMENT OF AGRICULTURE, SOIL CONSERVATION SERVICE, IN COOPERATION WITH THE UNIVERSITY OF
PUERTO RICO, COLLEGE OF AGRICULTURAL SCIENCES'


THE MAYAGUEZ AREA OF WESTERN PUERTO
RICO (called the Mayaguez Area in this survey) is in
the western and northwestern part of Puerto Rico. It cons-
ists of 460,835 acres, which includes the 14,000 acres on
Mona Island (fig. 1). Mona Island has a plateaulike surface
that descends abruptly to the sea in cliffs 150 to 200 feet
high. An area of about 500 acres in the southwestern corner
is sandy.
The soil and water conservation districts within this sur-
vey area are the Oeste District, which includes Mona Is-
land; the Noroeste and Culebrinas Districts, and the north-
ern part of the Suroeste District.


Figure 1.-Location of the Mayaguez Area in Puerto Rico.


'The Soil Conservation Service wishes to acknowledge its appreciation
to DR. JUAN COL.OM AVILIS, Professor of Soil Science, College of
Agricultural Science, University of Puerto Rico, Mayaguez, for his
valuable help in translating this soil survey into Spanish.


EL AREA DE MAYAGUEZ DEL OESTE DE PUER-
TO RICO estf localizada en la parte oeste y noroeste de
Puerto Rico. Consiste de 460,835 acres, que incluyen 14,000
acres en la Isla de Mona (fig. 1). La Isla de Mona tiene una
superficie parecida a un altiplano, que desciende abrupta-
mente hasta el mar en precipicios de 150 a 200 pies de altura.
Un Area de alrededor de 500 acres en la parte suroeste es
arenosa.
Los Distritos de Conservaci6n de Suelos y Agua com-
prendidos en el area de Mayagiiez son el Oeste, que incluye
la Isla de Mona, el Noroeste y el Culebrinas, y la parte norte
del Distrito Suroeste.


Figura l.-Ubicacidn del Area de Mayagiiez en Puerto Rico.


IEl Servicio de Conservaci6n de Suelos quiere reconocer su agradeci-
miento a el DR. JUAN COLOM AVILi S, Profesor de Ciencia de Suelos, Cole-
gio de Ciencia Agricola, Universidad de Puerto Rico, Mayagiiez, por su
preciosa asistencia en la traducci6n de 6ste reconocimiento de los suelos en
espanol.


_






SOIL SURVEY


How This Survey Was Made
Soil scientists made this survey to learn what kinds of soil
are in the Mayaguez Area, where they are located, and how
they can be used. The soil scientists went into the area
knowing they were likely to find many soils they had already
seen and perhaps some they had not. They observed the
steepness, length, and shape of slopes, the size and speed of
streams, the kinds of native plants or crops, the kinds of
rock, and many facts about the soils. They dug many holes
to expose soil profiles. A profile is the sequence of natural
layers, or horizons, in a soil; it extends from the surface
down into the parent material that has not been changed
much by leaching or by the action of plant roots.

The soil scientists made comparisons among the profiles
they studied, and they compared these profiles with those in
areas nearby and in places more distant. They classified and
named the soils according to nationwide, uniform proce-
dures. The soil series and soil phase are the categories of
soil classification most used in a local survey (5).2
Soils that have profiles almost alike make up a soil series.
Except for different texture in the surface layer, all the soils
of one series have major horizons that are similar in thick-
ness, arrangement, and other important characteristics.
Each soil series is named for a town or other geographic fea-
ture near the place where a soil of that series was first ob-
served and mapped. Aceitunas and Bejucos, for example,
are the names of two soil series. All the soils having the
same series name are essentially alike in those characteris-
tics that affect their behavior in the undisturbed landscape.

Soils of one series can differ in texture of the surface lay-
er and in slope, stoniness, or some other characteristic that
affects use of the soils by man. On the basis of such differ-
ences, a soil series is divided into phases. The name of a soil
phase indicates a feature that affects management. For
example, Aceitunas clay, 2 to 12 percent slopes, eroded, is
one of two phases of the Aceitunas series mapped in the
Mayaguez Area.
After a guide for classifying and naming the soils had
been worked out, the soil scientists drew the boundaries of
the individual soils on aerial photographs. These photo-
graphs show woodlands, buildings, field borders, trees, and
other details that help in drawing boundaries accurately.
The soil map at the back of this publication was prepared
from aerial photographs.

The areas shown on a soil map are called mapping units.
On most maps detailed enough to be useful in planning the
management of farms and fields, a mapping unit is nearly
equivalent to a soil phase. It is not exactly equivalent, be-
cause it is not practical to show on such a map all the small,
scattered bits of soil of some other kind that have been seen
within an area that is dominantly of a recognized soil phase.

Some mapping units are made up of soils of different se-
ries, or of different phases within one series. One such kind
of mapping unit shown on the soil map of the Mayaguez
Area is the soil complex.

2Italic numbers in parentheses refer to Literature Cited, p. 296.


Como se Hizo este Catastro
Los cientificos de suelos hicieron este catastro para cono-
cer las classes de suelos que hay en el Area de Mayagiiez,
donde estin situados y como pueden usarse. Los cientificos
de suelos fueron al area sabiendo que iban a encontrar mu-
chos suelos que ya habian visto antes, y quizas algunos que
no habian visto. Ellos observaron la inclinaci6n, el largo, y
la forma de las pendientes; el tamafio y la velocidad de los
riachuelos y rios; las classes de plants y cosechas; las classes
de rocas; y muchos datos sobre los suelos. Ellos cavaron
muchos hoyos para exponer los perfiles de los suelos. Un
perfil es la secuencia de capas naturales, u horizontes en un
suelo; se extiende desde la superficie hacia abajo, hasta el
material padre que no ha sido muy alterado por la lixiviaci6n
o por la acci6n de la raices de las plants.
Los cientificos de suelos hicieron comparaciones entire
los perfiles que estudiaban y tambi6n compararon estos per-
files con los de otras areas cercanas y mis distantes. Ellos
clasificaron y nombraron los suelos seguin procedimientos
uniforms. La series de suelos y las fases de suelos son las
categories de clasificaci6n de suelos mis usadas en este ca-
tastro (5).2
Suelos que tienen perfiles casi parecidos hacen una series
de suelos. Excepto por una textura diferente en la capa su-
perficial, todos los suelos de una series tienen horizontes que
son similares en grosor, secuencia, y otros caracteristicas
importantes. Cada series de suelos se nombra por un pueblo
u otra region geogrifica cerca del sitio en que el suelo de esa
series fue observado y cartografiado por primera vez. Acei-
tunas y Bejucos, por ejemplo, son los nombres de dos series
de suelos. Todos los suelos que tienen el mismo nombre de
series son esencialmente parecidos en todas las caracteristi-
cas que afectan su comportamiento en su estado natural.
Los suelos de una series pueden tener diferentes textures
de la capa superficial e inclinaciones, pedregosidad, u otra
caracteristica que afecte el uso del suelo por el hombre. En
base a estas diferencias, una series de suelos se divide en
fases. El nombre de una fase de suelo indica los rasgos que
afectan el manejo. Por ejemplo, Aceitunas arcilloso, 2 a 12
porciento de declive, erodado, es una de las fases de la series
Aceitunas, cartografiada en el Area de Mayagiiez.
Luego de haberse disefiado una guia para clasificar y
nombrar los suelos, los cientificos de suelos delinearon los
limits de los suelos individuals, sobre fotografias areas.
Estas fotografias ensefian bosques, edificios, bordes de los
predios, Arboles, y otros detalles que ayudan a delinear los
limits correctamente. El mapa de suelos en la parte poster-
ior de esta publicaci6n se prepare usando fotografias
areas.
Las areas delineadas en este mapa de suelos se llaman
unidades cartogrificas. En la mayor parte de los mapas, que
tienen detalles suficientes para usarse en el planeo y manejo
de fincas y predios, una unidad cartogrifica equivale a una
fase de suelo. No es exactamente equivalent porque no es
prictico ensefiar en un mapa de esta escala todas las pe-
quefias areas de otras classes de suelos que existen dentro de
la fase de suelo reconocida.
Algunas unidades cartogrificas consistent de suelos de
diferentes series o de diferentes fases de una series. Algunas
classes de estas unidades cartograficas en el mapa de suelos
del Area de Mayagiiez son los complejos de suelos.

2Los ntmeros en bastardillos y entire par6ntesis se refieren a la literature
citada, pig. 296.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


A soil complex consists of areas of two or more soils, so
intermingled or so small in size that they cannot be shown
separately on the soil map. Each area of a complex contains
some of each of the two or more dominant soils, and the
pattern and relative proportions are about the same in all
areas. The name of a soil complex consists of the names of
the dominant soils, joined by a hyphen. Matanzas-Lime-
stone rock land complex, 0 to 5 percent slopes, is an exam-
ple.
In most areas surveyed there are places where the soil
material is so rocky, so shallow, or so reworked by man that
it cannot be classified by soil series. These places are shown
on the soil map and are described in the survey, but they are
called land types and are given descriptive names. Levelled
clayey land is a land type in the Mayaguez Area.
While a soil survey is in progress, soil scientists take soil
samples needed for laboratory measurements and for engi-
neering tests. Laboratory data from the same kinds of soil in
other places are assembled. Data on yields of crops under
defined practices are assembled from farm records and from
field or plot experiments on the same kinds of soil. Yields
under defined management are estimated for some of the
soils.

But only part of a soil survey is done when the soils have
been named, described, and delineated on the map, and the
laboratory data and yield data have been assembled. The
mass of detailed information then needs to be organized in
such a way as to be readily useful to different groups of
users, among them farmers, managers of woodland, and
engineers.
On the basis of yield and practice tables and other data,
the soil scientists set up trial groups. They test these groups
by further study and by consultation with farmers, agrono-
mists, engineers, and others. Then they adjust the groups
according to the results of their studies and consultation.
Thus, the groups that are finally evolved reflect up-to-date
knowledge of the soils and their behavior under present
methods of use and management.



General Soil Map
The general soil map at the back of this survey shows, in
color, the soil associations in the Mayaguez Area. A soil
association is a landscape that has a distinctive proportional
pattern of soils. It normally consists of one or more major
soils and several minor soils, and it is named for the major
soils. The soils in one association may occur in another, but
in a different pattern.


Un complejo de suelos consiste de areas de dos o mis
suelos, tan entremezclados o tan pequefios en tamano que
no pueden separarse en el mapa de suelos. Cada area de un
complejo contiene dos o mis suelos dominantes y el patr6n
y la proporci6n de los suelos es casi la misma en todas las
areas. El nombre de un complejo de suelos consiste de los
nombres de los suelos dominantes, unidas por un guion. El
complejo Matanzas-Tierra roca caliza, 0 a 5 porciento de
declive, es un ejemplo.
En muchas areas catastradas, hay sitios donde el material
del suelo es tan rocoso, tan poco profundo, o tan alterado
por el hombre, que no puede clasificarse como una series de
suelos. Estos sitios se ensefian en el mapa de suelos y se
described, pero se Ilaman tipos de tierra, y se les tiene
nombres descriptivos. Tierra arcillosa nivelada es un tipo de
tierra en el area de Mayagiiez.
Cuando un catastro de suelos esta en progress, los cienti-
ficos de suelos cojen muestras de suelos para determina-
ciones de laboratorio y para pruebas de ingenieria. Datos de
laboratories de las mismas classes de suelos tomadas en
otros sitios se compilan. Tambi6n se compilan datos de
producci6n de cosechas obtenidas bajo practices definidas,
de los records de las fincas o de experiments de campos en
las mismas classes de suelos. La producci6n bajo un manejo
definido se estimia para algunos suelos.
Solamente una parte del studio de suelos esta hecha
cuando los suelos se han nombrado, descrito y delineados
en un mapa, y los datos de laboratorio y producci6n han
sido completados. Toda esta informaci6n detallada tiene
que ser organizada en cierta forma que sea util a los difer-
entes grupos de usuarios, entire ellos agricultores, silvicul-
tores, e ingenieros.
En base a los datos de producci6n, prActicas y otra infor-
maci6n, los cientificos de suelos preparan una agrupaci6n
tentative. Ellos ponen a prueba estas agrupaciones con mis
studios y con consultas con agricultores, agr6nomos, in-
genieros, y otros. Ellos ajustan entonces estas agrupaciones
de acuerdo con los resultados de sus studios y consultas.
Asi, las agrupaciones que finalmente se aceptan reflejan un
conocimiento al dia de los suelos y de su comportamiento
bajo los medios actuales de uso y manejo.


Mapa General de los Suelos
El mapa general de suelos en la parte posterior de esta
publicaci6n demuestra, en colors, las asociaciones de sue-
los del area de Mayagiiez. Una asociaci6n de suelos es un
paisaje que tiene un patron proporcional distintivo de sue-
los. Normalmente consiste de uno o mas suelos principles,
y unos cuantos suelos menores, y se nombra por los suelos
principles. Los suelos de una asociaci6n pueden ocurrir en
otra, pero en patrons diferentes.






SOIL SURVEY


A map showing soil associations is useful to people who
want a general idea of the soils in an area, who want to
compare different parts of an area, or who want to know the
location of large tracts that are suitable for a certain kind of
land use. Such a map is a useful general guide in managing a
watershed, a wooded tract, or a wildlife area, or in planning
engineering works, recreational facilities, and community
developments. It is not a suitable map for planning the man-
agement of a farm or field, or for selecting the exact location
of a road, building, or similar structure, because the soils in
any one association ordinarily differ in slope, depth, stoni-
ness, drainage, and other characteristics that affect their
management.
The ten soil associations in the Mayaguez Area are dis-
cussed in the following pages. Two of these associations are
on the Coastal Plains, two are on the limestone uplands, one
is on the flood plains, and the others are on the volcanic
rock uplands.

Associations of the Coastal Plains
Two of the soil associations in the Mayaguez Area are on
the Coastal Plains. These plains are on the north side of the
island where the elevation ranges from sea level to 30 me-
ters above sea level, the topography is relatively smooth,
and rainfall averages about 60 inches. This area is used
mainly for commercial farming. The topography and soil
patterns are suited to highly developed and intensive farm-
ing.
1. Bejucos-Jobos association
Strongly leached soils that have a tight, dominantly clayey
subsoil
This association is in the northern part of the survey area
on the Coastal Plains and adjacent to the Atlantic Ocean. It
is characterized by uniform, nearly level to rolling terrain
and a lack of intermittent streams. Some of the soils are at
elevations only slightly higher than sea level. The larger
area of this association is bordered, in the south, by fine-
textured soils derived from limestone.
This association makes up about 2 percent of the survey
area. It is about 35 percent soils of the Bejucos series and 32
percent soils of the Jobos series. The rest consists of minor
soils.
The major soils of this association are well drained and
strongly acid. The Bejucos soils have a dark yellowish-
brown, moderately coarse textured surface layer and a sub-
soil that is dominantly fine textured and mottled below a
depth of about 37 inches. The Jobos soils have a dark gray-
ish-brown, coarse-textured surface layer and a thick, mot-
tled, red and strong-brown, compact, fine-textured subsoil.
The minor soils are of the Catano, Espinal, Guerrero,
Maleza, and Rio Lajas series.
Most of this association is used for pasture, crops grown
for use on the farm, sugarcane, and such tree crops as coco-
nuts and citrus. A large acreage is used for pangolagrass,
vegetables, and other crops, but some is used for irrigated
crops.


Un mapa de asociaciones de suelos es util a las personas
que quieren tener una idea general de los suelos de un area,
que quieren comparar las diferentes parties de un area, o que
quieren saber la localizaci6n de grandes extensions que se
adapten a cierta clase de uso de la tierra. Un mapa asi es litil
para manejar una cuenca hidrogrifica, una extension de
bosques, un area de vida silvestre, o para planificar trabajos
de ingenieria, facilidades de recreaci6n y desarrollos co-
munales. No es un mapa adecuado para planear el menejo
de una finca, predio, o para seleccionar la localizaci6n exac-
ta de una carretera, edificio o estructura similar, porque los
suelos de una asociaci6n casi siempre difieren en declive,
profundidad, pedregosidad, desagiie y otras caracteristicas
que afectan su manejo.
Diez asociaciones de suelos en el Area de Mayagiiez se
discuten en las pr6ximas piginas. Dos de estas asociaciones
estin en los llanos costaneros, dos estin en las alturas cali-
zas, una en los llanos inundables, y las otras en las alturas
volcinicas.

Asociaciones de los Llanos Costaneros
Dos de las asociaciones de suelos en el Area de Mayagiiez
estin en los llanos costaneros. Estos Ilanos estin en la parte
norte de la isla, donde la elevaci6n varia desde el nivel del
mar, hasta 30 metros sobre el nivel del mar; la topografia es
relativamente lisa, y el promedio de lluvia es alrededor de 60
pulgadas. Esta area se usa mayormente para fines comer-
ciales. La topografia y los suelos de este sector se prestan
para una agriculture altamente especializada.
1. Asociaci6n Bejucos-Jobos
Suelos fuertemente lavados que tienen subsuelos compac-
tos y arcillosos
Esta asociaci6n esti en la parte norte del area en los Ilan-
os costaneros y adyacente al Oceano Atlintico. Se caracter-
iza por su terreno uniform, casi Ilano a ondulante, y por la
ausencia de riachuelos. Algunos de los suelos estin a eleva-
ciones ligeramente mis altas que el nivel del mar. El area
mayor de esta asociaci6n colinda en el sur con los suelos
arcillosos formados sobre roca caliza.
Esta asociaci6n comprende como 2 porciento del area.
Consiste de alrededor de 35 porciento de los suelos de la se-
rie Bejucos y 32 porciento de suelos de la series Jobos. El
resto la componen suelos secundarios.
Los suelos principles de esta asociaci6n tienen buen
desagiie y son fuertemente acidos. Los suelos Bejucos ti-
enen una capa superficial que es parda oscura amarillosa, de
textura moderadamente gruesa, y un subsuelo de textura
fina y con moteo a una profundidad de 37 pulgadas. Los sue-
los Jobos tienen una capa superficial parda oscura grisosa,
con textura gruesa y un subsuelo grueso, moteado, pardo,
compact y arcilloso.
Los suelos secundarios son de las series Catafno, Espinal,
Guerrero, Maleza, y Rio Lajas. La mayor parte de esta aso-
ciaci6n se usa para pastos, cosechas para el uso de la finca,
cafa de azucar, y para cocos y frutas citrosas. Un gran
cuerdaje se usa para yerba Pangola, vegetables y otras cose-
chas, pero algfn cuerdaje se usa para cosechas con riego.






SOIL SURVEY


A map showing soil associations is useful to people who
want a general idea of the soils in an area, who want to
compare different parts of an area, or who want to know the
location of large tracts that are suitable for a certain kind of
land use. Such a map is a useful general guide in managing a
watershed, a wooded tract, or a wildlife area, or in planning
engineering works, recreational facilities, and community
developments. It is not a suitable map for planning the man-
agement of a farm or field, or for selecting the exact location
of a road, building, or similar structure, because the soils in
any one association ordinarily differ in slope, depth, stoni-
ness, drainage, and other characteristics that affect their
management.
The ten soil associations in the Mayaguez Area are dis-
cussed in the following pages. Two of these associations are
on the Coastal Plains, two are on the limestone uplands, one
is on the flood plains, and the others are on the volcanic
rock uplands.

Associations of the Coastal Plains
Two of the soil associations in the Mayaguez Area are on
the Coastal Plains. These plains are on the north side of the
island where the elevation ranges from sea level to 30 me-
ters above sea level, the topography is relatively smooth,
and rainfall averages about 60 inches. This area is used
mainly for commercial farming. The topography and soil
patterns are suited to highly developed and intensive farm-
ing.
1. Bejucos-Jobos association
Strongly leached soils that have a tight, dominantly clayey
subsoil
This association is in the northern part of the survey area
on the Coastal Plains and adjacent to the Atlantic Ocean. It
is characterized by uniform, nearly level to rolling terrain
and a lack of intermittent streams. Some of the soils are at
elevations only slightly higher than sea level. The larger
area of this association is bordered, in the south, by fine-
textured soils derived from limestone.
This association makes up about 2 percent of the survey
area. It is about 35 percent soils of the Bejucos series and 32
percent soils of the Jobos series. The rest consists of minor
soils.
The major soils of this association are well drained and
strongly acid. The Bejucos soils have a dark yellowish-
brown, moderately coarse textured surface layer and a sub-
soil that is dominantly fine textured and mottled below a
depth of about 37 inches. The Jobos soils have a dark gray-
ish-brown, coarse-textured surface layer and a thick, mot-
tled, red and strong-brown, compact, fine-textured subsoil.
The minor soils are of the Catano, Espinal, Guerrero,
Maleza, and Rio Lajas series.
Most of this association is used for pasture, crops grown
for use on the farm, sugarcane, and such tree crops as coco-
nuts and citrus. A large acreage is used for pangolagrass,
vegetables, and other crops, but some is used for irrigated
crops.


Un mapa de asociaciones de suelos es util a las personas
que quieren tener una idea general de los suelos de un area,
que quieren comparar las diferentes parties de un area, o que
quieren saber la localizaci6n de grandes extensions que se
adapten a cierta clase de uso de la tierra. Un mapa asi es litil
para manejar una cuenca hidrogrifica, una extension de
bosques, un area de vida silvestre, o para planificar trabajos
de ingenieria, facilidades de recreaci6n y desarrollos co-
munales. No es un mapa adecuado para planear el menejo
de una finca, predio, o para seleccionar la localizaci6n exac-
ta de una carretera, edificio o estructura similar, porque los
suelos de una asociaci6n casi siempre difieren en declive,
profundidad, pedregosidad, desagiie y otras caracteristicas
que afectan su manejo.
Diez asociaciones de suelos en el Area de Mayagiiez se
discuten en las pr6ximas piginas. Dos de estas asociaciones
estin en los llanos costaneros, dos estin en las alturas cali-
zas, una en los llanos inundables, y las otras en las alturas
volcinicas.

Asociaciones de los Llanos Costaneros
Dos de las asociaciones de suelos en el Area de Mayagiiez
estin en los llanos costaneros. Estos Ilanos estin en la parte
norte de la isla, donde la elevaci6n varia desde el nivel del
mar, hasta 30 metros sobre el nivel del mar; la topografia es
relativamente lisa, y el promedio de lluvia es alrededor de 60
pulgadas. Esta area se usa mayormente para fines comer-
ciales. La topografia y los suelos de este sector se prestan
para una agriculture altamente especializada.
1. Asociaci6n Bejucos-Jobos
Suelos fuertemente lavados que tienen subsuelos compac-
tos y arcillosos
Esta asociaci6n esti en la parte norte del area en los Ilan-
os costaneros y adyacente al Oceano Atlintico. Se caracter-
iza por su terreno uniform, casi Ilano a ondulante, y por la
ausencia de riachuelos. Algunos de los suelos estin a eleva-
ciones ligeramente mis altas que el nivel del mar. El area
mayor de esta asociaci6n colinda en el sur con los suelos
arcillosos formados sobre roca caliza.
Esta asociaci6n comprende como 2 porciento del area.
Consiste de alrededor de 35 porciento de los suelos de la se-
rie Bejucos y 32 porciento de suelos de la series Jobos. El
resto la componen suelos secundarios.
Los suelos principles de esta asociaci6n tienen buen
desagiie y son fuertemente acidos. Los suelos Bejucos ti-
enen una capa superficial que es parda oscura amarillosa, de
textura moderadamente gruesa, y un subsuelo de textura
fina y con moteo a una profundidad de 37 pulgadas. Los sue-
los Jobos tienen una capa superficial parda oscura grisosa,
con textura gruesa y un subsuelo grueso, moteado, pardo,
compact y arcilloso.
Los suelos secundarios son de las series Catafno, Espinal,
Guerrero, Maleza, y Rio Lajas. La mayor parte de esta aso-
ciaci6n se usa para pastos, cosechas para el uso de la finca,
cafa de azucar, y para cocos y frutas citrosas. Un gran
cuerdaje se usa para yerba Pangola, vegetables y otras cose-
chas, pero algfn cuerdaje se usa para cosechas con riego.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


Although sufficient in quantity for abundant growth of
vegetation, the rainfall is so unevenly distributed that plants
are damaged by lack of water. Furrow irrigation is not feasi-
ble, because the soils have a sandy surface layer. Sprinkler
irrigation is suitable, and frequent applications of irrigation
water are desirable. The many good roads crossing this as-
sociation facilitate the use of the soils for crops. Much of
this association is in large landholdings.

2. Coto-Aceitunas association
Slightly leached and strongly leached porous soils that are
dominantly clayey throughout
This association consists of nearly level to sloping soils in
valleys and on foot slopes of the limestone hills. It is adja-
cent to the Atlantic Ocean on the west and to the limestone
uplands on the south.
This association makes up about 8 percent of the survey
area. It is about 35 percent soils of the Coto series and 9
percent soils of the Aceitunas series. The rest consists of
minor soils and areas of Limestone outcrop.
The major soils of this association are deep, gently slop-
ing to sloping, well drained, and moderately permeable.
They are underlain by hard, fragmented limestone. The
Coto soils are reddish brown, slightly acid, and fine tex-
tured. The Aceitunas soils are dark reddish brown, fine tex-
tured and moderately fine textured, and very strongly acid.
They are on the foot slopes of the limestone hills.
The minor soils are of the Cotito, Matanzas, San German,
and Tanama series.
Most of this association is used for many kinds of crops
because the good roads crossing it facilitate this use. A large
acreage is used for sugarcane, and about 10 percent is used
for irrigated crops. A large number of crops are grown, with
or without irrigation, for use on the farm. A large acreage is
in pangolagrass and other tame grasses and is used for pas-
ture. Some areas that were formerly used for sugarcane are
now used for dairy farms. Many areas that were cultivated
for many years are now used as sites for residential and in-
dustrial development as a result of the rapidly expanding
economy. These soils have only a slight degree of limitation
for nonfarm uses.
Plants are damaged by the lack of water during the long
periods of drought caused by the uneven distribution of
rainfall during the year. Both the furrow method and the
sprinkler method of irrigation are used.

Associations of the Limestone Uplands
Two of the associations in the Mayaguez Area are in the
limestone uplands. These uplands are in the northern part of
the survey area but south of the Coastal Plains. The eleva-
tion ranges from sea level to about 500 meters above sea
level. Rainfall averages about 60 inches. The dominant fea-
ture is karst topography, but there are also haystack hills
and inner valleys. Sinkholes provide most of the drainage.
These associations are used for mixed farming. The hilly
side slopes are used for permanent grass and trees.


Aunque la lluvia es suficiente para el crecimiento de las
plants, existe una distribuci6n tan irregular, que las plants
sufren daio por falta de agua. El regadio por surcos no es
factible, debido a la naturaleza arenosa de la capa superfi-
cial. Se adapta el riego por surtidores y son deseables las
aplicaciones frecuentas de agua de riego. Se facility el uso
de los suelos para cosechas, debido a los muchos caminos
que cruzan esta asociaci6n. Gran parte de esta asociaci6n
esti en fincas grandes.
2. Asociacion Coto-Aceitunas
Suelos ligera a fuertemente lavados, porosos y arcillosos en
toda su profundidad
Esta asociaci6n se encuentra en terrenos casi Ilanos a
poco inclinados, en valles y faldas de los cerros calizos. Al
sur le rodea las alturas de calizas, y al oeste el Oc6ano
AtlAntico.
Esta asociaci6n alcanza alrededor del 8 porciento del area
catastrada. Los suelos Coto contribuyen en el 35 porciento
de la asociaci6n. Los suelos Aceitunas contribuyen el 9 por-

ciento. El resto lo integran otros suelos secundarios.
Los principles suelos de esta asociaci6n son profundos,
suavemente inclinados a moderadamente inclinados, de
buen desagiie, y moderadamente permeables, y yacen sobre
roca caliza fragmentada y dura. Los suelos Coto son pardo-
rojizos, ligeramente Acidos, y de textura fina. Los suelos
Aceitunas son pardo rojizos oscuros, de textura fina, a
moderadamente fina, y bien fuertemente acidos. Se encuen-
tran en la falda de los cerros calizos.
Los suelos secundarios son de las series Cotito, Matan-
zas, San German, y Tanami.
Esta asociaci6n se usa para una gran variedad de cose-
chas. La proximidad a buenas carreteras facility este uso.
Un cuerdaje considerable esti sembrado en cafia de azucar,
y cerca del 10 porciento del area esti bajo riego. Muchas
cosechas se siembran con o sin riego para el uso de la finca.
Un cuerdaje considerable esti sembrado de yerba Pangola y
yerbas de corte y pastoreo. Algunas areas que se usaron en
el pasado para cafia de azucar, ahora se usan para industries
lecheras. Muchas areas que por muchos afios se dedicaron a
la agriculture se han convertido ahora en areas residenciales
o en lotes industriales, debido al auge econ6mico. Estos
suelos tienen limitaciones ligeras para usos no agricolas.
Debido a la distribuci6n irregular de la lluvia annual, pue-
den sobrevenir carestias de aguas asequible para las plants
durante periods prolongados de sequia. Se emplea tanto el
riego por surcos como el de surtidores.

Asociaciones de las Alturas Calizas
Existen dos asociaciones en las alturas calizas. Las altur-
as calizas se encuentran en la parte norte del area catastra-
da, pero al sur de los llanos costaneros. La elevaci6n varia
desde el nivel del mar hasta 500 metros. La lluvia promedio
es de 60 pulgadas. Domina la topografia carstica, pero tam-
bi6n hay cerros de mogotes y valles entire estos. Los desagii-
es vierten mayormente en sumideros naturales. Esta es una
area de agriculture mixta. Las laderas de las colinas estin en
vegetaci6n permanent de gramineas y arboles.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


Although sufficient in quantity for abundant growth of
vegetation, the rainfall is so unevenly distributed that plants
are damaged by lack of water. Furrow irrigation is not feasi-
ble, because the soils have a sandy surface layer. Sprinkler
irrigation is suitable, and frequent applications of irrigation
water are desirable. The many good roads crossing this as-
sociation facilitate the use of the soils for crops. Much of
this association is in large landholdings.

2. Coto-Aceitunas association
Slightly leached and strongly leached porous soils that are
dominantly clayey throughout
This association consists of nearly level to sloping soils in
valleys and on foot slopes of the limestone hills. It is adja-
cent to the Atlantic Ocean on the west and to the limestone
uplands on the south.
This association makes up about 8 percent of the survey
area. It is about 35 percent soils of the Coto series and 9
percent soils of the Aceitunas series. The rest consists of
minor soils and areas of Limestone outcrop.
The major soils of this association are deep, gently slop-
ing to sloping, well drained, and moderately permeable.
They are underlain by hard, fragmented limestone. The
Coto soils are reddish brown, slightly acid, and fine tex-
tured. The Aceitunas soils are dark reddish brown, fine tex-
tured and moderately fine textured, and very strongly acid.
They are on the foot slopes of the limestone hills.
The minor soils are of the Cotito, Matanzas, San German,
and Tanama series.
Most of this association is used for many kinds of crops
because the good roads crossing it facilitate this use. A large
acreage is used for sugarcane, and about 10 percent is used
for irrigated crops. A large number of crops are grown, with
or without irrigation, for use on the farm. A large acreage is
in pangolagrass and other tame grasses and is used for pas-
ture. Some areas that were formerly used for sugarcane are
now used for dairy farms. Many areas that were cultivated
for many years are now used as sites for residential and in-
dustrial development as a result of the rapidly expanding
economy. These soils have only a slight degree of limitation
for nonfarm uses.
Plants are damaged by the lack of water during the long
periods of drought caused by the uneven distribution of
rainfall during the year. Both the furrow method and the
sprinkler method of irrigation are used.

Associations of the Limestone Uplands
Two of the associations in the Mayaguez Area are in the
limestone uplands. These uplands are in the northern part of
the survey area but south of the Coastal Plains. The eleva-
tion ranges from sea level to about 500 meters above sea
level. Rainfall averages about 60 inches. The dominant fea-
ture is karst topography, but there are also haystack hills
and inner valleys. Sinkholes provide most of the drainage.
These associations are used for mixed farming. The hilly
side slopes are used for permanent grass and trees.


Aunque la lluvia es suficiente para el crecimiento de las
plants, existe una distribuci6n tan irregular, que las plants
sufren daio por falta de agua. El regadio por surcos no es
factible, debido a la naturaleza arenosa de la capa superfi-
cial. Se adapta el riego por surtidores y son deseables las
aplicaciones frecuentas de agua de riego. Se facility el uso
de los suelos para cosechas, debido a los muchos caminos
que cruzan esta asociaci6n. Gran parte de esta asociaci6n
esti en fincas grandes.
2. Asociacion Coto-Aceitunas
Suelos ligera a fuertemente lavados, porosos y arcillosos en
toda su profundidad
Esta asociaci6n se encuentra en terrenos casi Ilanos a
poco inclinados, en valles y faldas de los cerros calizos. Al
sur le rodea las alturas de calizas, y al oeste el Oc6ano
AtlAntico.
Esta asociaci6n alcanza alrededor del 8 porciento del area
catastrada. Los suelos Coto contribuyen en el 35 porciento
de la asociaci6n. Los suelos Aceitunas contribuyen el 9 por-

ciento. El resto lo integran otros suelos secundarios.
Los principles suelos de esta asociaci6n son profundos,
suavemente inclinados a moderadamente inclinados, de
buen desagiie, y moderadamente permeables, y yacen sobre
roca caliza fragmentada y dura. Los suelos Coto son pardo-
rojizos, ligeramente Acidos, y de textura fina. Los suelos
Aceitunas son pardo rojizos oscuros, de textura fina, a
moderadamente fina, y bien fuertemente acidos. Se encuen-
tran en la falda de los cerros calizos.
Los suelos secundarios son de las series Cotito, Matan-
zas, San German, y Tanami.
Esta asociaci6n se usa para una gran variedad de cose-
chas. La proximidad a buenas carreteras facility este uso.
Un cuerdaje considerable esti sembrado en cafia de azucar,
y cerca del 10 porciento del area esti bajo riego. Muchas
cosechas se siembran con o sin riego para el uso de la finca.
Un cuerdaje considerable esti sembrado de yerba Pangola y
yerbas de corte y pastoreo. Algunas areas que se usaron en
el pasado para cafia de azucar, ahora se usan para industries
lecheras. Muchas areas que por muchos afios se dedicaron a
la agriculture se han convertido ahora en areas residenciales
o en lotes industriales, debido al auge econ6mico. Estos
suelos tienen limitaciones ligeras para usos no agricolas.
Debido a la distribuci6n irregular de la lluvia annual, pue-
den sobrevenir carestias de aguas asequible para las plants
durante periods prolongados de sequia. Se emplea tanto el
riego por surcos como el de surtidores.

Asociaciones de las Alturas Calizas
Existen dos asociaciones en las alturas calizas. Las altur-
as calizas se encuentran en la parte norte del area catastra-
da, pero al sur de los llanos costaneros. La elevaci6n varia
desde el nivel del mar hasta 500 metros. La lluvia promedio
es de 60 pulgadas. Domina la topografia carstica, pero tam-
bi6n hay cerros de mogotes y valles entire estos. Los desagii-
es vierten mayormente en sumideros naturales. Esta es una
area de agriculture mixta. Las laderas de las colinas estin en
vegetaci6n permanent de gramineas y arboles.






SOIL SURVEY


3. Colinas-Soller association
Shallow and moderately deep, porous, loamy and clayey
soils and numerous limestone outcrops
This association consists of sloping to steep soils on low,
rolling and steep hills that have rounded tops. Many coarse
fragments are on the surface of some of the soils.
This association makes up about 12 percent of the survey
area. It is about 24 percent soils of the Colinas series and 23
percent soils of the Soller series. The rest consists of minor
soils and areas of Limestone outcrop.

The major soils of this association are well drained and
are underlain by limestone. The Colinas soils are steeper
than the other soils in this association. They are' dark
brown, calareous, and moderately fine textured. The Soller
soils are shallow, very dark gray, moderately alkaline to
neutral, moderately permeable, fine-textured soils that are
underlain by hard limestone.
The minor soils are those of the Camaguey, Cidral, Jun-
cal, Moca, and Naranjo series.
This association is used for many kinds of crops. Large
areas are in brushy forests, especially the steeper areas.
Sugarcane is grown on the lower slopes. A small acreage is
used for crops grown for use on the farm. Large areas are in
pasture that consists mainly of native grasses, and there are
some dairy farms. A small acreage is in pangolagrass.

The sugarcane is heavily fertilized, but little or no fertiliz-
er is used on crops grown for farm use. Many good farm
roads, as well as other good roads, cross this association.
Rainfall is generally high and is well distributed throughout
the year.
4. Limestone outcrop-San Sebastian association
Limestone outcrops and moderately deep, steep and very
steep, porous, gravelly, clayey soils

This association extends across the survey area in an
east-west direction. It consists of steep and very steep soils
on brushy mountain side slopes and gently to strongly slop-
ing soils on the foot slopes and in the narrow valleys be-
tween the mountain side slopes. Precipitous slopes are
common. The soils are characterized by many outcrops and
by rocks, cobblestones, and gravel on the surface. Drain-
ageways are short and lead mainly to subterranean chan-
nels. Few rivers and streams cross this association.


This association makes up about 8 percent of the survey
area. It is about 68 percent Limestone outcrop and 20 per-
cent soils of the San Sebastian series. The rest consists of
minor soils.

Limestone outcrop is generally steep and precipitous.
This outcrop covers 75 percent or more of the surface. The
areas not covered by outcrops consist of soil that is only 2 to
5 inches thick over hard limestone. The San Sebastian soils
are on side slopes. They are steep to very steep, moderately
deep, dark brown, calcareous, and fine textured. They have
many pebbles throughout the profile.


3. Asociacion Colinas-Soller
Suelos somerosos y moderadamente profundos, porosos,
16micos y arcillosos, con numerosos peniascos aflorantes
Esta asociaci6n se encuentra en terrenos ondulantes a
riscosos, y en colinas riscosas, con cimas redondas. Mu-
chos fragments rocosos estin sobre la superficie de algu-
nos de estos suelos.
La asociaci6n ocupa aproximadamente el 12 porciento del
area. Los suelos Colinas cubren cerca del 24 porciento del
area, y los suelos Soller comprenden alrededor del 23 por-
ciento de la asociaci6n. El percentage restante corresponde
a suelos menores y a la caliza aflorante.
Los principles suelos de esta asociacion yacen sobre
roca caliza, y son bien desaguados. Los suelos Colinas ocu-
pan las pendientes mas riscosas de la asociaci6n. Son pardo
oscuros, calcareos y de textura moderadamente fina. Los
suelos Soller son poco profundos, gris bien oscuro, modera-
damente alcalinos a neutrales, moderadamente permeables,
de textura fina y yacen sobre roca caliza dura.
Los suelos menores son de las series Caraguey, Cidral,
Juncal, Moca, y Naranjo.
Esta asociaci6n se usa para un gran nuimero de cosechas.
Grandes extensions estan ocupadas por bosques brefiosos,
especialmente en las laderas mis riscosas. En las pen-
dientes mis Ilevaderas se siembra cafia de azucar, y algunas
cosechas para el uso en la finca se siembran en menor esca-
la. Grandes porciones estan dedicadas a pastos espontaneos
y se han establecido algunas fincas de ganado lechero. Un
cuerdaje reducido esta sembrado en yerba Pangola.
La cafia de azucar se abona fuertemente, pero las cose-
chas para el uso de la finca reciben poca o ninguna fertiliza-
ci6n. El area esta bien nutrida de buenas carreteras, al igual
que buenos caminos empedrados. La lluvia annual es gener-
almente abundante y uniformemente distribuida.
4. Asociacion Roca caliza aflorante-San Sebastiin
Afloraciones de roca caliza y suelos moderadamente pro-
fundos, riscosos y muy riscosos, porosos y cascajo arcillo-
sos
La asociaci6n se extiende de este a oeste, en el area catas-
trada. En ella hay suelos riscosos a muy riscosos, en laderas
de montafias brefiosas, que a veces descienden a faldas con
declives que varian de ligeros a escarpados, y con valles es-
trechos intercalados. Pendientes de precipicios son co-
munes en esta asociaci6n. Los suelos de esta asociaci6n se
caracterizan por la alta frecuencia de afloraciones rocosas,
rocas, guijarros y cascajos en la superficie. Los cauces de
desagiie natural son cortos y desembocan mayormente en
canales subterraneos. Muy pocos rios y riachuelos atravie-
san esta asociaci6n.
La asociaci6n comprende el 8 porciento del area total ca-
tastrada. La roca caliza aflorante cubre aproximadamente
68 porciento del cuerdaje, y los suelos San Sebastian alrede-
dor del 20 porciento. El resto corresponde a los suelos se-
cundarios.
La roca caliza aflorante generalmente ocupa pendientes
riscosas y de precipicios. Este paraje consiste de areas cu-
biertas de afloraciones rocosas en un 75 porciento o mas.
Las areas sin afloraci6nes consistent de una capa de 2 a 5
pulgadas de suelo sobre roca caliza dura. Los suelos San
Sebastian estan en laderas riscosas a escarpadas. son mod-
eradamente profundos, pardo oscuros, calcareos y de tex-
tura final. Contienen bastante cascajos por todo el perfil.






SOIL SURVEY


3. Colinas-Soller association
Shallow and moderately deep, porous, loamy and clayey
soils and numerous limestone outcrops
This association consists of sloping to steep soils on low,
rolling and steep hills that have rounded tops. Many coarse
fragments are on the surface of some of the soils.
This association makes up about 12 percent of the survey
area. It is about 24 percent soils of the Colinas series and 23
percent soils of the Soller series. The rest consists of minor
soils and areas of Limestone outcrop.

The major soils of this association are well drained and
are underlain by limestone. The Colinas soils are steeper
than the other soils in this association. They are' dark
brown, calareous, and moderately fine textured. The Soller
soils are shallow, very dark gray, moderately alkaline to
neutral, moderately permeable, fine-textured soils that are
underlain by hard limestone.
The minor soils are those of the Camaguey, Cidral, Jun-
cal, Moca, and Naranjo series.
This association is used for many kinds of crops. Large
areas are in brushy forests, especially the steeper areas.
Sugarcane is grown on the lower slopes. A small acreage is
used for crops grown for use on the farm. Large areas are in
pasture that consists mainly of native grasses, and there are
some dairy farms. A small acreage is in pangolagrass.

The sugarcane is heavily fertilized, but little or no fertiliz-
er is used on crops grown for farm use. Many good farm
roads, as well as other good roads, cross this association.
Rainfall is generally high and is well distributed throughout
the year.
4. Limestone outcrop-San Sebastian association
Limestone outcrops and moderately deep, steep and very
steep, porous, gravelly, clayey soils

This association extends across the survey area in an
east-west direction. It consists of steep and very steep soils
on brushy mountain side slopes and gently to strongly slop-
ing soils on the foot slopes and in the narrow valleys be-
tween the mountain side slopes. Precipitous slopes are
common. The soils are characterized by many outcrops and
by rocks, cobblestones, and gravel on the surface. Drain-
ageways are short and lead mainly to subterranean chan-
nels. Few rivers and streams cross this association.


This association makes up about 8 percent of the survey
area. It is about 68 percent Limestone outcrop and 20 per-
cent soils of the San Sebastian series. The rest consists of
minor soils.

Limestone outcrop is generally steep and precipitous.
This outcrop covers 75 percent or more of the surface. The
areas not covered by outcrops consist of soil that is only 2 to
5 inches thick over hard limestone. The San Sebastian soils
are on side slopes. They are steep to very steep, moderately
deep, dark brown, calcareous, and fine textured. They have
many pebbles throughout the profile.


3. Asociacion Colinas-Soller
Suelos somerosos y moderadamente profundos, porosos,
16micos y arcillosos, con numerosos peniascos aflorantes
Esta asociaci6n se encuentra en terrenos ondulantes a
riscosos, y en colinas riscosas, con cimas redondas. Mu-
chos fragments rocosos estin sobre la superficie de algu-
nos de estos suelos.
La asociaci6n ocupa aproximadamente el 12 porciento del
area. Los suelos Colinas cubren cerca del 24 porciento del
area, y los suelos Soller comprenden alrededor del 23 por-
ciento de la asociaci6n. El percentage restante corresponde
a suelos menores y a la caliza aflorante.
Los principles suelos de esta asociacion yacen sobre
roca caliza, y son bien desaguados. Los suelos Colinas ocu-
pan las pendientes mas riscosas de la asociaci6n. Son pardo
oscuros, calcareos y de textura moderadamente fina. Los
suelos Soller son poco profundos, gris bien oscuro, modera-
damente alcalinos a neutrales, moderadamente permeables,
de textura fina y yacen sobre roca caliza dura.
Los suelos menores son de las series Caraguey, Cidral,
Juncal, Moca, y Naranjo.
Esta asociaci6n se usa para un gran nuimero de cosechas.
Grandes extensions estan ocupadas por bosques brefiosos,
especialmente en las laderas mis riscosas. En las pen-
dientes mis Ilevaderas se siembra cafia de azucar, y algunas
cosechas para el uso en la finca se siembran en menor esca-
la. Grandes porciones estan dedicadas a pastos espontaneos
y se han establecido algunas fincas de ganado lechero. Un
cuerdaje reducido esta sembrado en yerba Pangola.
La cafia de azucar se abona fuertemente, pero las cose-
chas para el uso de la finca reciben poca o ninguna fertiliza-
ci6n. El area esta bien nutrida de buenas carreteras, al igual
que buenos caminos empedrados. La lluvia annual es gener-
almente abundante y uniformemente distribuida.
4. Asociacion Roca caliza aflorante-San Sebastiin
Afloraciones de roca caliza y suelos moderadamente pro-
fundos, riscosos y muy riscosos, porosos y cascajo arcillo-
sos
La asociaci6n se extiende de este a oeste, en el area catas-
trada. En ella hay suelos riscosos a muy riscosos, en laderas
de montafias brefiosas, que a veces descienden a faldas con
declives que varian de ligeros a escarpados, y con valles es-
trechos intercalados. Pendientes de precipicios son co-
munes en esta asociaci6n. Los suelos de esta asociaci6n se
caracterizan por la alta frecuencia de afloraciones rocosas,
rocas, guijarros y cascajos en la superficie. Los cauces de
desagiie natural son cortos y desembocan mayormente en
canales subterraneos. Muy pocos rios y riachuelos atravie-
san esta asociaci6n.
La asociaci6n comprende el 8 porciento del area total ca-
tastrada. La roca caliza aflorante cubre aproximadamente
68 porciento del cuerdaje, y los suelos San Sebastian alrede-
dor del 20 porciento. El resto corresponde a los suelos se-
cundarios.
La roca caliza aflorante generalmente ocupa pendientes
riscosas y de precipicios. Este paraje consiste de areas cu-
biertas de afloraciones rocosas en un 75 porciento o mas.
Las areas sin afloraci6nes consistent de una capa de 2 a 5
pulgadas de suelo sobre roca caliza dura. Los suelos San
Sebastian estan en laderas riscosas a escarpadas. son mod-
eradamente profundos, pardo oscuros, calcareos y de tex-
tura final. Contienen bastante cascajos por todo el perfil.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


The minor soils are of the Aceitunas, Cotito, Coto, Ma-
tanzas, and Tanama series.
This association has been in brushy forest and brushy
pasture for many years. Small patches in the moderately
steep areas are cultivated occasionally. Some of the foot
slopes and the narrow valleys between the steep hills are
used for crops grown for use on the farm, some are used for
native pasture, and others, near the highways, are used for
sugarcane.
Most of the soils have little or no farming value because
they are steep and shallow to bedrock. Most areas are inac-
cessible, and those that do have foot trails also have large
amounts of rocks that make walking difficult. The soils on
the foot slopes and in the narrow valleys between the steep
hills are more useful than those in other areas. Rainfall is
generally high throughout the area and is well distributed
throughout the year. Few highways and few farm roads
cross this association. Laying out and constructing high-
ways and roads are costly.


Associations of the Flood Plains
Only one association is on the flood plains. It occupies the
large flood plains of rivers that flow directly to the sea. In
these areas the elevation is only a few meters above sea lev-
el and rainfall ranges from 80 to 100 inches. Most of the
flood plains are used for commercial farming, mainly sugar-
cane production.

5. Coloso-Toa association
Nearly level, porous soils that are loamy throughout

This association consists of nearly level soils along the
larger rivers and streams of the survey area. It is character-
ized by nearly level relief and scattered ponded areas. The
three larger areas are on the flood plains of the three main
rivers. Most areas are flooded frequently and are subject to
deposition of sediments. The soils formed in sediment de-
rived from hills underlain by volcanic rocks and limestone.


This association makes up about 8 percent of the survey
area. It is about 29 percent soils of the Coloso series and 20
percent soils of the Toa series. The rest consists of minor
soils.
The major soils of this association are generally between
coarser textured soils that are adjacent to the riverbanks
and the finer textured, poorly drained soils that are farther
from the banks. They are deep, dark brown, slightly acid to
medium acid, and moderately fine textured. They are well
supplied with plant nutrients and organic matter. The Colo-
so soils are somewhat poorly drained. They are somewhat
easily worked. The Toa soils are moderately well drained.
They are easily worked.
The minor soils are of the Bajura, Corcega, Dique, San-
toni, and Talante series.
This association has been used for sugarcane for many
years, and it is well suited to this use. Some undrained areas
are used for grazing during periods of the year when the
water table is not at the surface and there is no hazard of
flooding.


Los suelos secundarios pertenecen a las series Aceitunas,
Cotito, Coto, Matanzas, y Tanama.
Los suelos de esta asociaci6n han estado por muchos
afios bajo bosques y pastos brefiosos. Predios pequefios en
las areas moderadamente riscosas se cultivan ocasional-
mente. Algunas de las faldas y valles estrechos entire las
montafias se usan para cosechas que se utilizan en la finca,
otros se usan para pastos espontAneos y los que estan pr6xi-
mos a las carreteras se siembran en caiia de azucar.
La mayoria de los suelos tienen muy poco o ningun valor
agricola, por su declive riscoso y por ser poco profundos a
la roca. La mayor parte de las areas son inaccesibles, y
aquellos que tienen veredas tienen gran cantidad de rocas
que hacen muy dificil caminarlos. Los suelos de las faldas y
de los valles estrechos son mas utiles que los de otras areas.
La lluvia es generalmente alta en todo el area y esta uni-
formemente distribuida en todo el afio. Muy pocas carreter-
as y caminos de piedra existen en el area. Por otra parte, el
disefio y construcci6n de carreteras result costoso en 6sta
area.

Asociaciones de los Llanos Inundables
Existe solo una asociaci6n en los llanos inundables. Esta
asociaci6n ocupa planicies extensivas a lo largo de los rios
que desembocan directamente en el mar. Su elevaci6n es
escasamente algunos metros sobre el nivel del mar, y la llu-
via varia entire 80 y 100 pulgadas. La mayor parte del area se
dedica a la operaci6n agricola comerical, especialmente la
cafia de azucar.
5. Asociaci6n Coloso-Toa
Suelos casi nivelados y porosos que son lomicos en toda su
profundidad
Esta asociaci6n consiste de suelos casi nivelados, a lo lar-
go de los rios y riachuelos del area catastrada. La fisiografia
es de Ilanuras casi niveladas, con areas bajas, en charcos
ocasionales. Las tres porciones principles de esta asocia-
ci6n estan ubicadas a lo largo de las tres principles llanuras
de rios inundables. La mayor parte de las areas son suscep-
tibles de inundaciones y sedimentaci6n. Los suelos se for-
maron mediante la acumulaci6n de sedimentos arrastrados
por el agua proveniente de las montafias volcanicas y calizas
circundantes.
La asociaci6n comprende 8 porciento del area catastrada.
Los suelos Coloso comprenden apr6ximadamente el 29 por-
ciento, y los suelos Toa alcanzan alrededor del 20 porciento.
El area restante la integran los suelos secundarios.
Los principles suelos de esta asociaci6n se hallan gener-
almente entire los suelos de textura mis liviana que radican
adyacentes a las riberas de los rios, asi como entire los mas
pesados y pobremente desaguados, que radican a la mayor
distancia de la ribera. Son profundos, pardo-oscuros, ligera-
mente acidos a moderadamente Acidos, y de textura moder-
adamente final. Contienen nutrients y material orgAnica a un
nivel adecuado. Los suelos Coloso son algo mal desagua-
dos, y facil de labrar. Los suelos secundarios de esta asocia-
ci6n son de las series Bajura, C6rcega, Dique, Santoni y
Talante.
Esta asociaci6n se ha usado para caria de azicar por
muchos afios, y se adapta bien para este uso. Algunas areas
no desaguadas se usan para pastoreo durante la 6poca del
afio en que el nivel freitico no se halla sobre la superficie, ni
existe el peligro de inundaciones.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


The minor soils are of the Aceitunas, Cotito, Coto, Ma-
tanzas, and Tanama series.
This association has been in brushy forest and brushy
pasture for many years. Small patches in the moderately
steep areas are cultivated occasionally. Some of the foot
slopes and the narrow valleys between the steep hills are
used for crops grown for use on the farm, some are used for
native pasture, and others, near the highways, are used for
sugarcane.
Most of the soils have little or no farming value because
they are steep and shallow to bedrock. Most areas are inac-
cessible, and those that do have foot trails also have large
amounts of rocks that make walking difficult. The soils on
the foot slopes and in the narrow valleys between the steep
hills are more useful than those in other areas. Rainfall is
generally high throughout the area and is well distributed
throughout the year. Few highways and few farm roads
cross this association. Laying out and constructing high-
ways and roads are costly.


Associations of the Flood Plains
Only one association is on the flood plains. It occupies the
large flood plains of rivers that flow directly to the sea. In
these areas the elevation is only a few meters above sea lev-
el and rainfall ranges from 80 to 100 inches. Most of the
flood plains are used for commercial farming, mainly sugar-
cane production.

5. Coloso-Toa association
Nearly level, porous soils that are loamy throughout

This association consists of nearly level soils along the
larger rivers and streams of the survey area. It is character-
ized by nearly level relief and scattered ponded areas. The
three larger areas are on the flood plains of the three main
rivers. Most areas are flooded frequently and are subject to
deposition of sediments. The soils formed in sediment de-
rived from hills underlain by volcanic rocks and limestone.


This association makes up about 8 percent of the survey
area. It is about 29 percent soils of the Coloso series and 20
percent soils of the Toa series. The rest consists of minor
soils.
The major soils of this association are generally between
coarser textured soils that are adjacent to the riverbanks
and the finer textured, poorly drained soils that are farther
from the banks. They are deep, dark brown, slightly acid to
medium acid, and moderately fine textured. They are well
supplied with plant nutrients and organic matter. The Colo-
so soils are somewhat poorly drained. They are somewhat
easily worked. The Toa soils are moderately well drained.
They are easily worked.
The minor soils are of the Bajura, Corcega, Dique, San-
toni, and Talante series.
This association has been used for sugarcane for many
years, and it is well suited to this use. Some undrained areas
are used for grazing during periods of the year when the
water table is not at the surface and there is no hazard of
flooding.


Los suelos secundarios pertenecen a las series Aceitunas,
Cotito, Coto, Matanzas, y Tanama.
Los suelos de esta asociaci6n han estado por muchos
afios bajo bosques y pastos brefiosos. Predios pequefios en
las areas moderadamente riscosas se cultivan ocasional-
mente. Algunas de las faldas y valles estrechos entire las
montafias se usan para cosechas que se utilizan en la finca,
otros se usan para pastos espontAneos y los que estan pr6xi-
mos a las carreteras se siembran en caiia de azucar.
La mayoria de los suelos tienen muy poco o ningun valor
agricola, por su declive riscoso y por ser poco profundos a
la roca. La mayor parte de las areas son inaccesibles, y
aquellos que tienen veredas tienen gran cantidad de rocas
que hacen muy dificil caminarlos. Los suelos de las faldas y
de los valles estrechos son mas utiles que los de otras areas.
La lluvia es generalmente alta en todo el area y esta uni-
formemente distribuida en todo el afio. Muy pocas carreter-
as y caminos de piedra existen en el area. Por otra parte, el
disefio y construcci6n de carreteras result costoso en 6sta
area.

Asociaciones de los Llanos Inundables
Existe solo una asociaci6n en los llanos inundables. Esta
asociaci6n ocupa planicies extensivas a lo largo de los rios
que desembocan directamente en el mar. Su elevaci6n es
escasamente algunos metros sobre el nivel del mar, y la llu-
via varia entire 80 y 100 pulgadas. La mayor parte del area se
dedica a la operaci6n agricola comerical, especialmente la
cafia de azucar.
5. Asociaci6n Coloso-Toa
Suelos casi nivelados y porosos que son lomicos en toda su
profundidad
Esta asociaci6n consiste de suelos casi nivelados, a lo lar-
go de los rios y riachuelos del area catastrada. La fisiografia
es de Ilanuras casi niveladas, con areas bajas, en charcos
ocasionales. Las tres porciones principles de esta asocia-
ci6n estan ubicadas a lo largo de las tres principles llanuras
de rios inundables. La mayor parte de las areas son suscep-
tibles de inundaciones y sedimentaci6n. Los suelos se for-
maron mediante la acumulaci6n de sedimentos arrastrados
por el agua proveniente de las montafias volcanicas y calizas
circundantes.
La asociaci6n comprende 8 porciento del area catastrada.
Los suelos Coloso comprenden apr6ximadamente el 29 por-
ciento, y los suelos Toa alcanzan alrededor del 20 porciento.
El area restante la integran los suelos secundarios.
Los principles suelos de esta asociaci6n se hallan gener-
almente entire los suelos de textura mis liviana que radican
adyacentes a las riberas de los rios, asi como entire los mas
pesados y pobremente desaguados, que radican a la mayor
distancia de la ribera. Son profundos, pardo-oscuros, ligera-
mente acidos a moderadamente Acidos, y de textura moder-
adamente final. Contienen nutrients y material orgAnica a un
nivel adecuado. Los suelos Coloso son algo mal desagua-
dos, y facil de labrar. Los suelos secundarios de esta asocia-
ci6n son de las series Bajura, C6rcega, Dique, Santoni y
Talante.
Esta asociaci6n se ha usado para caria de azicar por
muchos afios, y se adapta bien para este uso. Algunas areas
no desaguadas se usan para pastoreo durante la 6poca del
afio en que el nivel freitico no se halla sobre la superficie, ni
existe el peligro de inundaciones.






SOIL SURVEY


The large areas that have been adequately drained are
moderately suited to well suited to crops. The control of
frequent damaging floods is the most serious problem for
landowners in this association. Rainfall is generally high,
and irrigation is not necessary in most areas. Many good
highways and farm roads cross this association. Some areas
have been filled or leveled at high cost and are used as sites
for residential, commercial, or industrial development. The
rapid expansion of the economy, the increase in industrial
development, and the consequent expansion of the cities
have raised considerably the value of the soils.


Associations of the Volcanic Rock Uplands
Five of the associations in the Mayaquez Area are in the
volcanic rock uplands. These uplands occupy roughly the
southern two-thirds of the survey area. They are the west-
ern extension of the mountain range that crosses the island
in an east-west direction. The elevation ranges from sea
level to about 1,000 meters above sea level. The topography
is rugged and characterized by narrow ridgetops, steep side
slopes, and well-defined drainage patterns. Rainfall ranges
from less than 30 inches in the south to about 120 inches at
the higher elevations and on north-facing slopes. These
areas are used mainly for crops grown for use on the farm,
for commercial pasture, and for some shade-grown coffee at
the higher elevations.
6. Voladora-Moca association
Strongly leached, clayey, slightly sticky and plastic soils
underlain by rock at a depth of more than 60 inches; in a
very humid climate
This association is made up of a diversity of landforms. It
includes gently sloping to steep soils on long foot slopes and
low, rolling and rugged steep hills that have narrow ridges.
It is dissected by a large number of intermittent streams.

This association makes up about 4 percent of the survey
area. It is about 34 percent soils of the Voladora series and
15 percent soils of the Moca series. The rest consists of
minor soils.
The major soils of this association are acid and fine tex-
tured. The Voladora soils are well drained, and dark reddish
brown. They are underlain by gravel or cobblestones. The
Moca soils are moderately well drained and dark brown.
They have a mottled subsoil that has moderately slow
permeability.
The minor soils are of the Catano, Lares, Mucara, and
Plata series.
Many of the lower slopes in this association are used for
crops that are grown for use on the farm. Sugarcane has
been grown on a large acreage. Some areas are used for na-
tive pasture, which has low carrying capacity. A large
acreage, especially in the steeper areas, is in brushy forest.
There are some coffee plantations.

Large amounts of fertilizer are used in growing sugarcane
and crops for use on the farm. Lime is not generally used.
Most coffee plantations are difficult to cultivate, and most of
the coffee trees are too old. Some highways and good farm
roads cross this association. Rainfall is generally high and
well distributed throughout the year. Irrigation is not neces-
sary.


Areas extensivas, adecuadamente reclamadas en de-
sagiie, se adaptan a la siembra de cosechas. El problema
mas serio que sufren los propietarios es el control de las fre-
cuentes y desastrosas inundaciones. La lluvia es general-
mente alta, y no hace falta el riego en la mayoria de las
areas. Abundan carreteras y caminos en esta asociaci6n. Se
han rellenado y nivelado algunas areas a un alto costo y lue-
go se han usado para fines residenciales, comerciales o in-
dustriales. La rApida expansion de la economic, y el auge en
el fomento industrial, y la concurrente expansion urbana
han provocado un incremento considerable al precio de es-
tas tierras.

Asociaciones de las Alturas Volcanicas
Existen cinco asociaciones en las alturas volcinicas, en el
area de Mayagiiez. Las alturas volcanicas ocupan cerca de
dos-terceras parties del area catastrada. Son la extension
occidental de la cordillera central de montaiias que biseca la
isla en una direcci6n de este-oeste. Su elevaci6n varia desde
el nivel del mar, hasta 1,000 metros sobre el nivel del mar.
Su topografia es corrugada y se caracteriza por cumbres
estrechas, laderas riscosas y vertientes bien definidas. La
lluvia varia de menos de 30 pulgadas en el sur, a cerca de
120 pulgadas en las elevaciones mas altas en el norte de la
cordillera. Estas areas se emplean principalmente en cose-
chas para el uso de la finca, para pastoreo commercial, asi
como algin caf6, bajo sombra, en las elevaciones mis altas.
6. Asociaci6n Voladora-Moca
Suelos fuertemente lavados, arcillosos, ligeramente pegajo-
sos y plasticos, con roca subjacente a mis de 60 pulgadas,
en un clima muy hdmedo.
Esta asociaci6n consiste de diferentes formas geom6rfi-
cas. Incluye suelos ligeramente inclinados a escarpados, en
faldas de laderas alargadas, en alomados bajos y en cerros
escarpados, que tienen- cimas estrechas. Numerosos ria-
chuelos intermitentes intercalan el area.
Esta asociaci6n alcanza el 4 porciento del area total catas-
trada. Los suelos Voladora alcanzan aproximadamente el 34
porciento. Los suelos Moca comprenden el 15 porciento. El
area restante la componen los suelos secundarios.
Los suelos principles de esta asociaci6n son Acidos y de
texture fina. Los suelos Voladora son bien desaguados, y
pardo-rojo oscuros. Descansan sobre cascajos o guijarros.
Los suelos Moca son moderadamente bien desaguados y
pardo oscuros. Tienen un subsuelo moteado que tiene una
permeabilidad moderadamente lenta.
Los suelos secundarios estan en las series Cataiio, Lares,
Mtcara, y Plata.
Muchas de las pendientes mis bajas se han cultivado en
cosechas para uso en la finca. La caria de azucar se cultiva
en gran parte del cuerdaje. Algunas areas se usan para pas-
tos espontineos que tienen una baja capacidad de pastoreo.
Una porci6n considerable del area, especialmente la de las
mas riscosas, se hallan en bosques brefiosos. El area com-
prende algunas plantaciones de cafe.
Grandes cantidades de abono se aplican a la caiia de aztc-
ar y a las cosechas que se usan en la finca. Cominmente no
se aplica cal. Es dificil cultivar la mayoria de las siembras de
cafe, y una gran parte de los arbustos de caf6 son muy vie-
jos. Algunas carreteras y caminos de finca atraviesan por
6sta asociaci6n. La lluvia es generalmente abundante y bien
distribuida a trav6s del aiio. El regadio no es necesario.






SOIL SURVEY


The large areas that have been adequately drained are
moderately suited to well suited to crops. The control of
frequent damaging floods is the most serious problem for
landowners in this association. Rainfall is generally high,
and irrigation is not necessary in most areas. Many good
highways and farm roads cross this association. Some areas
have been filled or leveled at high cost and are used as sites
for residential, commercial, or industrial development. The
rapid expansion of the economy, the increase in industrial
development, and the consequent expansion of the cities
have raised considerably the value of the soils.


Associations of the Volcanic Rock Uplands
Five of the associations in the Mayaquez Area are in the
volcanic rock uplands. These uplands occupy roughly the
southern two-thirds of the survey area. They are the west-
ern extension of the mountain range that crosses the island
in an east-west direction. The elevation ranges from sea
level to about 1,000 meters above sea level. The topography
is rugged and characterized by narrow ridgetops, steep side
slopes, and well-defined drainage patterns. Rainfall ranges
from less than 30 inches in the south to about 120 inches at
the higher elevations and on north-facing slopes. These
areas are used mainly for crops grown for use on the farm,
for commercial pasture, and for some shade-grown coffee at
the higher elevations.
6. Voladora-Moca association
Strongly leached, clayey, slightly sticky and plastic soils
underlain by rock at a depth of more than 60 inches; in a
very humid climate
This association is made up of a diversity of landforms. It
includes gently sloping to steep soils on long foot slopes and
low, rolling and rugged steep hills that have narrow ridges.
It is dissected by a large number of intermittent streams.

This association makes up about 4 percent of the survey
area. It is about 34 percent soils of the Voladora series and
15 percent soils of the Moca series. The rest consists of
minor soils.
The major soils of this association are acid and fine tex-
tured. The Voladora soils are well drained, and dark reddish
brown. They are underlain by gravel or cobblestones. The
Moca soils are moderately well drained and dark brown.
They have a mottled subsoil that has moderately slow
permeability.
The minor soils are of the Catano, Lares, Mucara, and
Plata series.
Many of the lower slopes in this association are used for
crops that are grown for use on the farm. Sugarcane has
been grown on a large acreage. Some areas are used for na-
tive pasture, which has low carrying capacity. A large
acreage, especially in the steeper areas, is in brushy forest.
There are some coffee plantations.

Large amounts of fertilizer are used in growing sugarcane
and crops for use on the farm. Lime is not generally used.
Most coffee plantations are difficult to cultivate, and most of
the coffee trees are too old. Some highways and good farm
roads cross this association. Rainfall is generally high and
well distributed throughout the year. Irrigation is not neces-
sary.


Areas extensivas, adecuadamente reclamadas en de-
sagiie, se adaptan a la siembra de cosechas. El problema
mas serio que sufren los propietarios es el control de las fre-
cuentes y desastrosas inundaciones. La lluvia es general-
mente alta, y no hace falta el riego en la mayoria de las
areas. Abundan carreteras y caminos en esta asociaci6n. Se
han rellenado y nivelado algunas areas a un alto costo y lue-
go se han usado para fines residenciales, comerciales o in-
dustriales. La rApida expansion de la economic, y el auge en
el fomento industrial, y la concurrente expansion urbana
han provocado un incremento considerable al precio de es-
tas tierras.

Asociaciones de las Alturas Volcanicas
Existen cinco asociaciones en las alturas volcinicas, en el
area de Mayagiiez. Las alturas volcanicas ocupan cerca de
dos-terceras parties del area catastrada. Son la extension
occidental de la cordillera central de montaiias que biseca la
isla en una direcci6n de este-oeste. Su elevaci6n varia desde
el nivel del mar, hasta 1,000 metros sobre el nivel del mar.
Su topografia es corrugada y se caracteriza por cumbres
estrechas, laderas riscosas y vertientes bien definidas. La
lluvia varia de menos de 30 pulgadas en el sur, a cerca de
120 pulgadas en las elevaciones mas altas en el norte de la
cordillera. Estas areas se emplean principalmente en cose-
chas para el uso de la finca, para pastoreo commercial, asi
como algin caf6, bajo sombra, en las elevaciones mis altas.
6. Asociaci6n Voladora-Moca
Suelos fuertemente lavados, arcillosos, ligeramente pegajo-
sos y plasticos, con roca subjacente a mis de 60 pulgadas,
en un clima muy hdmedo.
Esta asociaci6n consiste de diferentes formas geom6rfi-
cas. Incluye suelos ligeramente inclinados a escarpados, en
faldas de laderas alargadas, en alomados bajos y en cerros
escarpados, que tienen- cimas estrechas. Numerosos ria-
chuelos intermitentes intercalan el area.
Esta asociaci6n alcanza el 4 porciento del area total catas-
trada. Los suelos Voladora alcanzan aproximadamente el 34
porciento. Los suelos Moca comprenden el 15 porciento. El
area restante la componen los suelos secundarios.
Los suelos principles de esta asociaci6n son Acidos y de
texture fina. Los suelos Voladora son bien desaguados, y
pardo-rojo oscuros. Descansan sobre cascajos o guijarros.
Los suelos Moca son moderadamente bien desaguados y
pardo oscuros. Tienen un subsuelo moteado que tiene una
permeabilidad moderadamente lenta.
Los suelos secundarios estan en las series Cataiio, Lares,
Mtcara, y Plata.
Muchas de las pendientes mis bajas se han cultivado en
cosechas para uso en la finca. La caria de azucar se cultiva
en gran parte del cuerdaje. Algunas areas se usan para pas-
tos espontineos que tienen una baja capacidad de pastoreo.
Una porci6n considerable del area, especialmente la de las
mas riscosas, se hallan en bosques brefiosos. El area com-
prende algunas plantaciones de cafe.
Grandes cantidades de abono se aplican a la caiia de aztc-
ar y a las cosechas que se usan en la finca. Cominmente no
se aplica cal. Es dificil cultivar la mayoria de las siembras de
cafe, y una gran parte de los arbustos de caf6 son muy vie-
jos. Algunas carreteras y caminos de finca atraviesan por
6sta asociaci6n. La lluvia es generalmente abundante y bien
distribuida a trav6s del aiio. El regadio no es necesario.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


7. Caguabo-Mucara association
Slightly leached, loamy and clayey, sticky and plastic soils
underlain by hard or weathered rock at a depth of less than
30 inches; in a humid climate
This association consists of sloping to steep soils on low,
rounded hills and steep mountains that have narrow ridge-
tops. It is highly dissected by many intermittent streams.
Most of the soils are moderately steep to steep and occur on
hills dissected by numerous V-shaped drainageways.

This association makes up about 16 percent of the survey
area. It is about 35 percent soils of the Caguabo series and
30 percent soils of the Mucara series. The rest consists of
minor soils.

The major soils of this association are well drained and
moderately permeable. The Caguabo soils are shallow, dark
grayish brown, and moderately fine textured, They are un-
derlain by volcanic rock at a depth of 8 to 20 inches. The
Mucara soils are very dark grayish brown and fine textured.
They are underlain by volcanic rock at a depth of 20 to 36
inches.
The minor soils are of the Anones, Consumo, Humatas,
Malaya, Maresua, and Quebrada series. Serpentinite out-
crop occupies the steeper areas.
Many of the soils, even steep ones, are used for clean-
cultivated crops, and left idle in low brush for several years
following one or two crops. On some of the smoother
slopes, sugarcane is grown, and on the lower slopes many
kinds of crops are grown for use on the farm. A large
acreage is in brushy pasture that has low carrying capacity.
Some areas are in brushy forest. A few areas are used for
guineagrass and pangolagrass, and other areas are used for
pajongrass.
Cultivation is done by hand. Runoff is rapid, and much of
the surface layer has been lost through erosion as a result of
improper use and management. The soils are fertile. Sugar-
cane is heavily fertilized, but crops grown for use on the
farm are seldom fertilized. Rainfall is adequate in most
areas, but plants are damaged by lack of available water
during the drought period from December to February
when runoff is rapid. Irrigation is not feasible. A few high-
ways and some farm roads cross this association. The cost
of laying out and constructing roads is high because the soils
are steep and shallow to hard rock.

8. Consumo-Humatas association
Strongly leached, clayey, sticky and plastic soils underlain
by thick layers of weathered rock; in a very humid climate

This association consists of strongly sloping to steep soils
on long side slopes and rounded hilltops in the center of the
survey area. Most of the soils are steep and occur on hills
dissected by drainageways. Many large streams and rivers
cross this association.

This association makes up 38 percent of the survey area.
It is about 37 percent soils of the Consumo series and 19
percent soils of the Humatas series. The rest consists of
minor soils.


7. Asociaci6n Caguabo-MWcara
Suelos ligeramente lavados, 16micos y arcillosos, pegajosos
y plisticos, que tienen roca dura a meteorizada a menos de
30 pulgadas de profundidad, en un clima h6medo
Esta asociaci6n ocupa terrenos con declives llevaderos a
escarpados, en cerrillos redondeados y montafias escarpa-
das, que tienen cimas estrechas. Esta asociaci6n esta inter-
calada por muchos cauces intermitentes. La mayoria de los
suelos existen en cerros con pendientes moderadamente
riscosas a riscosas y numerosos cauces de desagues en for-
ma de V, intercalan todo el area.
La asociaci6n ocupa aproximadamente el 16 porciento del
area estudiada. Los suelos Caguabo ocupan alrededor del 35
porciento del cuerdaje. Los suelos Muicara comprenden el
30 porciento. La fracci6n restante corresponde a los suelos
secundarios.
Los suelos principles de esta asociaci6n tienen buen
desagiie y son moderadamente permeables. Los suelos
Caguabo son poco profundos, pardo-grisaceo oscuros, y
con textura moderadamente fina. Tienen roca volcanica a
produndidad de 8 a 20 pulgadas. Los suelos M6cara son
pardo grisaceo muy oscuros, y con textura fina. Tienen roca
volcanica a una profundidad de 20 a 36 pulgadas.
Los suelos secundarios son de las series Anones, Consu-
mo, Humatas, Malaya, Maresua, y Quebrada. La serpentin-
ita aflorante ocupa los declives mas riscosos.
Gran parte de estos suelos, a6n los mas riscosos, se han
sembrado en cosechas de cultivo limpio y luego de una o
dos cosechas, se abandonan cubiertos de maleza, por various
afios. En los declives mas llevaderos se siembra caria de
azucar y tambi6n cosechas para el uso en la finca. Un cuer-
daje considerable se dedica a pastos brefiosos, con una ca-
pacidad de pastoreo muy baja. Algunas areas se encuentran
en bosques brefiosos. Pocas areas se han sembrado en yerba
Guinea y en Pangola, y aun otros se encuentran en yerba
Paj6n.
El cultivo se hace a mano. El escurrimiento es ripido, y
gran parte del suelo superficial se pierde por erosi6n, como
el resultado de uso y manejo impropio. Los suelos son
f6rtiles. La cafia de azucar se abona intensivamente, pero
las cosechas para el uso en la finca raramente se abonan. A
pesar de que Ilueve bastante en la mayor parte de las areas,
las plants sufren por carestia de agua accessible durante el
period seco de diciembre a febrero, cuando el escurrimien-
to es rapido. El riego no es factible. Existen buenas carre-
teras y caminos a trav6s de esta asociaci6n. Es costoso el
disefio y construcci6n de carreteras debido al declive escar-
pado y lo cercano de la superficie a la roca viva.
8. Asociacion Consumo-Humatas
Suelos fuertemente lavados, arcillosos, pegajosos y plasti-
cos que yacen sobre gruesas capas de roca meteorizada, en
un clima muy himedo.
Esta asociaci6n esta en el centro del area catastrada, ocu-
pando terrenos fuertemente inclinados a riscosos, en de-
clives alargados y cerros redondeados. Casi todos los suelos
de esta asociaci6n ocurren en colinas riscosas, divididas
entire si por cauces de desagiie. Muchos rios y riachuelos
atraviesan el area de esta asociaci6n.
La asociaci6n alcanza el 38 porciento del area catastrada.
Los suelos Consumo ocupan aproximadamente el 37 por-
ciento. Los suelos Humatas cubren el 19 porciento. La frac-
ci6n restante corresponde a los suelos secundarios.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


7. Caguabo-Mucara association
Slightly leached, loamy and clayey, sticky and plastic soils
underlain by hard or weathered rock at a depth of less than
30 inches; in a humid climate
This association consists of sloping to steep soils on low,
rounded hills and steep mountains that have narrow ridge-
tops. It is highly dissected by many intermittent streams.
Most of the soils are moderately steep to steep and occur on
hills dissected by numerous V-shaped drainageways.

This association makes up about 16 percent of the survey
area. It is about 35 percent soils of the Caguabo series and
30 percent soils of the Mucara series. The rest consists of
minor soils.

The major soils of this association are well drained and
moderately permeable. The Caguabo soils are shallow, dark
grayish brown, and moderately fine textured, They are un-
derlain by volcanic rock at a depth of 8 to 20 inches. The
Mucara soils are very dark grayish brown and fine textured.
They are underlain by volcanic rock at a depth of 20 to 36
inches.
The minor soils are of the Anones, Consumo, Humatas,
Malaya, Maresua, and Quebrada series. Serpentinite out-
crop occupies the steeper areas.
Many of the soils, even steep ones, are used for clean-
cultivated crops, and left idle in low brush for several years
following one or two crops. On some of the smoother
slopes, sugarcane is grown, and on the lower slopes many
kinds of crops are grown for use on the farm. A large
acreage is in brushy pasture that has low carrying capacity.
Some areas are in brushy forest. A few areas are used for
guineagrass and pangolagrass, and other areas are used for
pajongrass.
Cultivation is done by hand. Runoff is rapid, and much of
the surface layer has been lost through erosion as a result of
improper use and management. The soils are fertile. Sugar-
cane is heavily fertilized, but crops grown for use on the
farm are seldom fertilized. Rainfall is adequate in most
areas, but plants are damaged by lack of available water
during the drought period from December to February
when runoff is rapid. Irrigation is not feasible. A few high-
ways and some farm roads cross this association. The cost
of laying out and constructing roads is high because the soils
are steep and shallow to hard rock.

8. Consumo-Humatas association
Strongly leached, clayey, sticky and plastic soils underlain
by thick layers of weathered rock; in a very humid climate

This association consists of strongly sloping to steep soils
on long side slopes and rounded hilltops in the center of the
survey area. Most of the soils are steep and occur on hills
dissected by drainageways. Many large streams and rivers
cross this association.

This association makes up 38 percent of the survey area.
It is about 37 percent soils of the Consumo series and 19
percent soils of the Humatas series. The rest consists of
minor soils.


7. Asociaci6n Caguabo-MWcara
Suelos ligeramente lavados, 16micos y arcillosos, pegajosos
y plisticos, que tienen roca dura a meteorizada a menos de
30 pulgadas de profundidad, en un clima h6medo
Esta asociaci6n ocupa terrenos con declives llevaderos a
escarpados, en cerrillos redondeados y montafias escarpa-
das, que tienen cimas estrechas. Esta asociaci6n esta inter-
calada por muchos cauces intermitentes. La mayoria de los
suelos existen en cerros con pendientes moderadamente
riscosas a riscosas y numerosos cauces de desagues en for-
ma de V, intercalan todo el area.
La asociaci6n ocupa aproximadamente el 16 porciento del
area estudiada. Los suelos Caguabo ocupan alrededor del 35
porciento del cuerdaje. Los suelos Muicara comprenden el
30 porciento. La fracci6n restante corresponde a los suelos
secundarios.
Los suelos principles de esta asociaci6n tienen buen
desagiie y son moderadamente permeables. Los suelos
Caguabo son poco profundos, pardo-grisaceo oscuros, y
con textura moderadamente fina. Tienen roca volcanica a
produndidad de 8 a 20 pulgadas. Los suelos M6cara son
pardo grisaceo muy oscuros, y con textura fina. Tienen roca
volcanica a una profundidad de 20 a 36 pulgadas.
Los suelos secundarios son de las series Anones, Consu-
mo, Humatas, Malaya, Maresua, y Quebrada. La serpentin-
ita aflorante ocupa los declives mas riscosos.
Gran parte de estos suelos, a6n los mas riscosos, se han
sembrado en cosechas de cultivo limpio y luego de una o
dos cosechas, se abandonan cubiertos de maleza, por various
afios. En los declives mas llevaderos se siembra caria de
azucar y tambi6n cosechas para el uso en la finca. Un cuer-
daje considerable se dedica a pastos brefiosos, con una ca-
pacidad de pastoreo muy baja. Algunas areas se encuentran
en bosques brefiosos. Pocas areas se han sembrado en yerba
Guinea y en Pangola, y aun otros se encuentran en yerba
Paj6n.
El cultivo se hace a mano. El escurrimiento es ripido, y
gran parte del suelo superficial se pierde por erosi6n, como
el resultado de uso y manejo impropio. Los suelos son
f6rtiles. La cafia de azucar se abona intensivamente, pero
las cosechas para el uso en la finca raramente se abonan. A
pesar de que Ilueve bastante en la mayor parte de las areas,
las plants sufren por carestia de agua accessible durante el
period seco de diciembre a febrero, cuando el escurrimien-
to es rapido. El riego no es factible. Existen buenas carre-
teras y caminos a trav6s de esta asociaci6n. Es costoso el
disefio y construcci6n de carreteras debido al declive escar-
pado y lo cercano de la superficie a la roca viva.
8. Asociacion Consumo-Humatas
Suelos fuertemente lavados, arcillosos, pegajosos y plasti-
cos que yacen sobre gruesas capas de roca meteorizada, en
un clima muy himedo.
Esta asociaci6n esta en el centro del area catastrada, ocu-
pando terrenos fuertemente inclinados a riscosos, en de-
clives alargados y cerros redondeados. Casi todos los suelos
de esta asociaci6n ocurren en colinas riscosas, divididas
entire si por cauces de desagiie. Muchos rios y riachuelos
atraviesan el area de esta asociaci6n.
La asociaci6n alcanza el 38 porciento del area catastrada.
Los suelos Consumo ocupan aproximadamente el 37 por-
ciento. Los suelos Humatas cubren el 19 porciento. La frac-
ci6n restante corresponde a los suelos secundarios.






SOIL SURVEY


The major soils of this association are well drained, acid,
moderately permeable, and fine textured. They are under-
lain by a thick layer of weathered volcanic rock that, in
most places, is at a depth of more than 6 feet. This weath-
ered rock has variegated colors and is generally coarser tex-
tured than the overlying layers. The Consumo soils have a
reddish-brown surface layer and a thin red subsoil. The
Humatas soils have a dark-brown surface layer and a thick
reddish subsoil.
The minor soils are of the Anones, Caguabo, Cuchillas,
Daguey, Los Guineos, Morado, and Mucara series.

The steeper areas are used for coffee, bananas, and or-
anges. Many areas are in brushy forest and brushy pasture.
Large farms that were in coffee for many years have been
abandoned because of the poor growth of the crop, difficul-
ties in cultivation, and lack of coffee pickers. A large
acreage is in native pasture, which has low carrying capaci-
ty. There are some small dairy farms, but on most of these
the production of milk is low.
The soils of this association have been cultivated inten-
sively, even where steep and erodible. Runoff is rapid, and
much of the surface layer has been lost through erosion.
The cultivated crops respond well to heavy applications of
fertilizer. Lime is seldom used. There is little or no income
from brushy forest and brushy pasture. Little or no attempt
has been made to improve native pastures. Rainfall is gener-
ally high and is well distributed throughout the year. Some
highways and farm roads cross this association, but the cost
of laying out and constructing highways and farm roads is
high because of the steepness.

9. Nipe-Rosario association
Very strongly leached, clayey, nonsticky and plastic soils
underlain by hard or weathered rock at a depth of more than
20 inches; in a very humid climate
This association consists of gently sloping soils on mesa-
like terrain and moderately steep to steep soils on side
slopes and mountain ridges. These soils are characterized
by an extremely weathered profile and by uniformly dark-
red color. They have a very high content of iron oxide that
stains hands and clothes and is very difficult to wash out.
Some of the more gently sloping soils have been cultivated
and have an indurated surface.
This association makes up about 1 percent of the survey
area. It is about 50 percent Nipe soils and 45 percent Rosa-
rio soils. The rest consists of minor soils.
The major soils in this association are well drained, acid,
and fine textured. They are underlain by serpentinite rock.
Generally, the Nipe soils are more gently sloping than the
Rosario soils. They are in tablelike positions where there is
little or no dissection by drainageways. They are deep,
mainly at a depth of more than 8 feet to serpentinite rock.
Generally, the Rosario soils are steeper than the Nipe soils.
They are on side slopes that are strongly dissected by drain-
ageways. They are moderately deep to serpentinite, which
is mainly at a depth of 20 to 40 inches.

The minor soils are of the Delicias and Santa Marta se-
ries and Serpentinite outcrop.


Los suelos principles de esta asociaci6n tienen buen
desagiie, son Acidos, tienen permeabilidad moderada y tex-
tura fina. Yacen sobre gruesas capas de roca volcanica me-
teorizada, que en la mayoria de los casos subyacen a mis de
6 pies de profundidad. La roca volcinica meteorizada ex-
hibe colors veteados y es generalmente de textura mis
gruesa que las capas sobreyacentes. Los suelos Consumo
tienen capas superficiales, pardo-rojizas y subsuelos delga-
dos y rojos. Los suelos Humatas tienen capas superficiales,
pardo-oscuras, subsuelos gruesos y rojos.
Los suelos secundarios de la asociaci6n estan en las se-
ries Anones, Caguabo, Cuchillas, Daguey, Los Guineos,
Morado, y M6cara.
Las areas mis riscosas se usan para cafe. bananos y citri-
cas. Muchas areas existen en bosques brefiosos y pastos
enmalezados. Las grandes fincas que por muchos anos se
dedicaron al cultivo de cafe se hallan abandonadas debido a
rendimientos bajos, dificultades en el laboreo y la escasez
de obreros y cojedores. Un cuerdaje considerable se en-
cuentra en past native, con baja capacidad de pastoreo.
Existen algunas vaquerias pequefias, pero en su mayoria la
producci6n de leche es baja.
Los suelos de esta asociaci6n se han cultivado intensiva-
mente, sin considerar lo escarpado del decline, y el contra-
tiempo de la erosi6n. El escurrimiento es ripido, y gran
parte de la capa superficial se ha perdido por la erosi6n. Las
cosechas responded bien a la aplicaci6n de abono. Raras
veces se usa cal. Hay muy poco o ningun ingreso de los
bosques brefiosos o de los pastos enmalezados. No se ha
hecho much esfuerzo para mejorar los pastos nativos. La
Iluvia annual es generalmente alta y de distribuci6n bastante
uniform. Existen algunas carreteras y caminos que atravie-
san el area, pero el costo de disefio y construcci6n de carre-
teras y caminos es alto, debido a lo escarpado del declive.
9. Asociaci6n Nipe-Rosario
Suelos muy fuertemente lavados, arcillosos, no pegajosos y
plasticos, con mis de 20 pulgadas hasta la roca dura o me-
teorizada, en un clima muy himedo.
Esta asociaci6n ocupa altiplanos levemente inclinados y
laderas que varian entire moderadamente escarpadas a es-
carpadas. Estos suelos se distinguen por su perfil extrema-
damente meteorizado y su color rojo oscuro uniform. Ti-
enen un contenido muy alto de 6xidos de hierro, que tifien
las manos y la ropa, y es dificil limpiar. Algunas areas que
han sido cultivadas en las pendientes mis niveladas exhiben
un endurecimiento de la superficie.
Esta asociaci6n alcanza solo el 1 porciento del area catas-
trada. Los suelos Nipe comprenden aproxiradamente 50
porciento del area. Los suelos Rosario alcanzan 45 porcien-
to. Los suelos secundarios componen el area restante. Los
suelos principles de esta asociaci6n tienen buen desague,
son acidos y de textura fina. Yacen sobre roca serpentinita.
Generalmente los suelos Nipe ocupan las pendientes mis
leves que los suelos Rosario. Estin en las mesetas carentes
de cauces de desagues. Son profundos, mayormente la roca
serpentinita esta a una profundidad de 8 pies o mis. Gener-
almente los suelos Rosario son mis escarpados que los sue-
los Nipe. Estin en laderas fuertemente divididas por cauces
de desagues. Son moderadamente profundos, y la serpen-
tinita subyace a profundidad de 20 a 40 pulgadas.
Los suelos secundarios estan en las series Delicias, Santa
Marta, y el tipo tierra Afloraciones de serpentinita.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


The more gently sloping areas are used for some of the
crops that are grown for use on the farm. The moderately
steep and steep areas have been in brushy pasture and
brushy forest, but they have little agricultural value. No at-
tempt has been made to produce either pasture or timber.
Homesites in this association are in demand because of the
beautiful scenery and fresh weather. The soils in this asso-
ciation have only slight limitations for use as homesites.

The soils in this association are among the less fertile soils
in the survey area. The more gently sloping soils are easily
worked, even after a heavy rain. Heavy applications of fer-
tilizer are needed for moderate crop response. Rainfall
ranges from 70 to 80 inches, but there are long periods of
drought when the soils dry out to a great depth. Few high-
ways and farm roads cross this association.


10. Descalabrado association
Slightly leached soils that have a clayey subsoil and that are
underlain by hard rock at a depth of less than 20 inches; in a
semiarid clmate
This soil association is in the southernmost part of the
survey area. It consists of sloping to steep soils on foot
slopes, side slopes, and ridgetops in the drier part of the
survey area. It is dissected by many intermittent streams
and draws. It is characterized by many, steep, rugged, for-
ested or pastured mountain slopes. There are a few strongly
sloping side slopes and a few narrow foot slopes. On the
north this association is adjacent to an area of higher rainfall
where soils are shallow and moderately deep to volcanic
rock and adjacent to the flood plain of the Guanajibo River.
On the south it is adjacent to soils of the upland in the drier
Lajas Valley area.
This association makes up about 3 percent of the survey
area. It is about 80 percent Descalabrado soils. The rest
consists of minor soils.

The Descalabrado soils are shallow, dark yellowish
brown, slightly acid, and moderately fine textured. They are
underlain by hard volcanic rock and are generally steeper
than the minor soils.

The minor soils are of the Aguilita, Jacana, Mariana, and
Palmarejo series.
The larger areas of the association, which are steeper and
rougher, are in native pasture and brushy forest. The soils
have had little or no cultivation because they are steep and
the rainfall is unfavorable. Some of the acreage is fairly well
suited to pasture, but most of the pasture is brushy and has
very low carrying capacity. Many of the pastures are used
for livestock, but during long periods of dry weather, it is
common for many head of livestock to starve. The soils on
the lower slopes are used occasionally for crops that are to
be used on the farm, and then the soils are left idle for sev-
eral years. A few small dairy farms have been established.


Las areas de declives mis llevaderos se siembran en cose-
chas para uso de la finca. Las areas moderadamente inclina-
das a inclinadas han estado en pastos enmalezados y
bosques brefiosos, pero tienen muy poco valor agricola. No
se ha intentado sembrar pastos o arboles en estos terrenos.
Estos terrenos tienen, sin embargo, buena demand para
prop6sitos residenciales, debido a lo pintoresco de sus pai-
sajes, y al clima fresco. Los suelos de esta asociaci6n tienen
limitaciones leves para la construcci6n de hogares.
Los suelos de esta asociaci6n estin entire los mis inf-
6rtiles del area. Los suelos en declives mis llevaderos son
ficiles de trabajar, ain despues de fuertes aguaceros. Para
alcanzar rendimientos moderados, se necesita abonar
fuertemente estos suelos. La precipitaci6n pluvial varia
entire 70 y 80 pulgadas, pero durante periods prolongados
de sequia, estos suelos se secan a considerable profundidad.
Existen pocas carreteras y caminos a traves del area de esta
asociacion.
10. Asociacion Descalabrado
Suelos ligeramente lavados que tienen subsuelos arcillosos
y con menos de 20 pulgadas a la roca dura, en un clima se-
miarido.
Esta asociaci6n radica en la porci6n sur del area catastra-
da. Ocupa terrenos inclinados a escabrosos, en faldas, lad-
eras y cimas en la parte mis seca del area. El area esta sec-
cionada por muchos riachuelos intermitentes. Esta asocia-
ci6n se caracteriza por el gran n6mero de vertientes mon-
tafiosas bien escarpadas y corrugadas que se encuentran en
bosques o pastos. Tambien hay algunas laderas fuertemente
inclinadas y algunas faldas estrechas. Una area lluviosa,
con suelos variantes, entire poco profundos y moderada-
mente profundos, que descansan sobre roca volcinica; jun-
to con las llanuras inundables del Rio Guanajibo, bordean
esta asociaci6n por el norte. Por el sur colinda con los sue-
los de altura del area del Valle de Lajas.
La asociaci6n cubre aproximadamente 3 porciento del
area total catastrada. Los suelos Descalabrado cubren
aproximadamente 80 porciento. El area restante esti com-
puesta por los suelos secundarios.
Los suelos Descalabrado son poco profundos, pardo
amarillo oscuros, ligeramente Acidos y de textura modera-
damente fina. Estos suelos descansan sobre roca volcanica
dura, y ocupan, generalmente, los declives mis escarpados
de la asociaci6n.
Los suelos secundarios pertenecen a las series Aguilita,
Jacana, Mariana, y Palmarejo.
Las areas mis extensivas de esta asociaci6n, que son las
mas escarpadas y escabrosas, estin dedicadas a pastos nati-
vos y bosques brefosos. Se ha hecho poco o ningiin laboreo
en estos suelos, debido a sus pendientes riscosas y lluvia
desfavorable. Parte del area se presta para la siembra de
pastos, pero la mayor parte de los pastos estin enmalezados
y tienen una capacidad de pastoreo muy baja. Muchos de
estos pastos se usan para ganado, pero much de este gana-
do sucumbe con frecuencia por inanici6n, durante los perio-
dos prolongados de sequia. Los terrenos en los declives mis
Ilevaderos se dedican ocasionalmente a cultivos para el uso
de la finca, y luego son puestos en barbecho por algunos
afios. Algunas vaquerias pequefias se han establecido en
esta area.






SOIL SURVEY


The suitability to crops depends largely on the amount of
rainfall. It is moderate in years of average rainfall, but crops
fail in years when rainfall is below average. Irrigation is not
feasible, because the areas are small and scattered. Few
good highways and farm roads cross this association. Lay-
ing out and constructing highways and roads is costly be-
cause of the steepness and the shallowness of the soils.



Descriptions of the Soils
In this section the soils of the Mayaguez Area are de-
scribed in detail. The procedure is to describe first the soil
series and then the mapping units in that series. Thus, to get
full information on any one mapping unit, it is necessary to
read both the description of that unit and the description of
the soil series to which the unit belongs.

Each series description contains a short description of a
soil profile considered representative of the series and a
much more detailed description of the same profile that sci-
entists, engineers, and others can use in making highly tech-
nical interpretations. Many of the terms used in describing
soil series and mapping units are defined in the Glossary,
and some are defined in the section "How This Survey Was
Made."
The approximate acreage and proportionate extent of the
soils are shown in table l. The "Guide to Mapping Units"
lists the mapping units of the Mayaguez Area and shows the
capability units and woodland groups each mapping unit is
in and the page where each of these is described.



Aceitunas Series
The Aceitunas series consists of deep, well-drained soils
that are very strongly acid and moderately permeable.
These soils are in inner valleys between limestone hills.
They formed in sediments washed from surrounding hills.
The slope ranges from 2 to 12 percent. The climate is sub-
humid. Rainfall amounts to 55 to 65 inches, and the annual
temperature ranges from 76 to 780 F.

In a representative profile the surface layer is dark red-
dish-brown, very strongly acid clay about 7 inches thick.
The subsoil is yellowish-red and red, very strongly acid,
firm and friable, slightly sticky and plastic clay that extends
to a depth of more than 60 inches.

Most of the acreage has been used for sugarcane for a
long time. Only a few areas are used for pasture and subsist-
ence crops.
Representative profile of Aceitunas clay, 2 to 12 percent
slopes, eroded, 4.0 kilometers southeast of Aguadilla, on a
paved road, 2.3 kilometers south of kilometer marker 123.5
on Highway No. 2, 8 meters west of highway:

Ap-0 to 7 inches, dark reddish-brown (5YR 3/4) clay; moderate,
medium, granular structure; firm, slightly sticky and plastic;
many fine roots; many fine quartz grains; very strongly acid;
abrupt, smooth boundary.


Los rendimientos dependent en gran media de la cantidad
de lluvia. Los rendimientos son moderados durante afios de
lluvia promedio, pero se reduce tremendamente durante
afios de lluvia subnormal. El regadio no es factible porque
las areas son reducidas y esporfdicas. Buenas carreteras y
caminos atraviesan el area de esta asociaci6n. Es costoso el
disefio y construcci6n de carreteras, debido a lo escarpado
del declive y a la escasa profundidad de estos suelos.


Descripcion de los Suelos
En esta secci6n se described los suelos del area de Maya-
giiez detalladamente. El sistema que se sigue es el de descri-
bir primero la series de suelos y luego las unidades carto-
grificas en esa series. Asi, para obtener toda la informaci6n
sobre una unidad cartogrifica, se necesita leer tanto la des-
cripci6n de esa unidad, como la descripci6n de la series de
suelos a que pertenece.
En la descripci6n de la series hay una descripci6n corta del
perfil de suelo que se consider representative de esa series.
Tambi6n hay una descripci6n much mis detallada de ese
mismo perfil que los cientificos, ingenieros y otros pueden
usar para hacer interpretaciones altamente tecnicas. Mu-
chos de los terminos usados al describir la series y las uni-
dades cartogrificas se definen en el glosario, y otros t6rmi-
nos se definen en la secci6n "Como se Hizo este Catastro."
El cuerdaje aproximado y la extension proporcional de
los suelos se encuentra en la tabla 1. La "Guia a las Uni-
dades Cartogrificas" present una lista de las unidades car-
tograficas del area de Mayagiiez, con sus correspondientes
unidades de capacidad agricola y grupo de prestancia para
bosques, y la pAgina en que cada una de estas unidades esti
descrita.

Serie Aceitunas
La series Aceitunas consiste de suelos profundos, de buen
desagiie, bien fuertemente icidos y moderadamente perme-
ables. Estos suelos radican en valles internos, entire suelos
calizos. Se han formado de sedimentos lavados de los sue-
los circumdantes. Los declives varian entire 2 y 12 porcien-
to. El clima prevaleciente es subhumedo. La precipitaci6n
annual es de 55 a 65 pulgadas, y la temperature annual varia
entire 76 y 780 F.
En un perfil representative la capa superficial es pardo
rojiza oscura, bien fuertemente acida, arcillosa, como de 7
pulgadas de espesor. El subsuelo es rojo amarilloso y rojo,
bien fuertemente acido, firme y friable, levemente pegajoso
y plistico, arcilloso, que se extiende a profundidad de mis
de 60 pulgadas.
La gran parte ha sido usada para cafia de azucar por largo
tiempo. Solamente pocas areas se usan para pastos y cose-
chas para uso en la finca.
Perfil representative de Aceitunas arcilloso, 2 a 12 por-
ciento de declive, erodado, se puede encontrar a 4.0 kil6me-
tros al sureste de Aguadilla en un camino asfaltado, 2.3
kil6metros al sur del marcador de kil6metros 123.5 de la car-
retera no. 2; 8 metros al oeste de la carretera.
Ap-0 a 7 pulgadas, arcilloso, pardo-rojizo oscuro (5YR 3/4): estruc-
tura granular moderada median; firme, levemente pegajoso.
plistico; con muchas raices finas; muchos granos finos de
cuarzo; bien fuertemente icido: limited abrupt liso.






SOIL SURVEY


The suitability to crops depends largely on the amount of
rainfall. It is moderate in years of average rainfall, but crops
fail in years when rainfall is below average. Irrigation is not
feasible, because the areas are small and scattered. Few
good highways and farm roads cross this association. Lay-
ing out and constructing highways and roads is costly be-
cause of the steepness and the shallowness of the soils.



Descriptions of the Soils
In this section the soils of the Mayaguez Area are de-
scribed in detail. The procedure is to describe first the soil
series and then the mapping units in that series. Thus, to get
full information on any one mapping unit, it is necessary to
read both the description of that unit and the description of
the soil series to which the unit belongs.

Each series description contains a short description of a
soil profile considered representative of the series and a
much more detailed description of the same profile that sci-
entists, engineers, and others can use in making highly tech-
nical interpretations. Many of the terms used in describing
soil series and mapping units are defined in the Glossary,
and some are defined in the section "How This Survey Was
Made."
The approximate acreage and proportionate extent of the
soils are shown in table l. The "Guide to Mapping Units"
lists the mapping units of the Mayaguez Area and shows the
capability units and woodland groups each mapping unit is
in and the page where each of these is described.



Aceitunas Series
The Aceitunas series consists of deep, well-drained soils
that are very strongly acid and moderately permeable.
These soils are in inner valleys between limestone hills.
They formed in sediments washed from surrounding hills.
The slope ranges from 2 to 12 percent. The climate is sub-
humid. Rainfall amounts to 55 to 65 inches, and the annual
temperature ranges from 76 to 780 F.

In a representative profile the surface layer is dark red-
dish-brown, very strongly acid clay about 7 inches thick.
The subsoil is yellowish-red and red, very strongly acid,
firm and friable, slightly sticky and plastic clay that extends
to a depth of more than 60 inches.

Most of the acreage has been used for sugarcane for a
long time. Only a few areas are used for pasture and subsist-
ence crops.
Representative profile of Aceitunas clay, 2 to 12 percent
slopes, eroded, 4.0 kilometers southeast of Aguadilla, on a
paved road, 2.3 kilometers south of kilometer marker 123.5
on Highway No. 2, 8 meters west of highway:

Ap-0 to 7 inches, dark reddish-brown (5YR 3/4) clay; moderate,
medium, granular structure; firm, slightly sticky and plastic;
many fine roots; many fine quartz grains; very strongly acid;
abrupt, smooth boundary.


Los rendimientos dependent en gran media de la cantidad
de lluvia. Los rendimientos son moderados durante afios de
lluvia promedio, pero se reduce tremendamente durante
afios de lluvia subnormal. El regadio no es factible porque
las areas son reducidas y esporfdicas. Buenas carreteras y
caminos atraviesan el area de esta asociaci6n. Es costoso el
disefio y construcci6n de carreteras, debido a lo escarpado
del declive y a la escasa profundidad de estos suelos.


Descripcion de los Suelos
En esta secci6n se described los suelos del area de Maya-
giiez detalladamente. El sistema que se sigue es el de descri-
bir primero la series de suelos y luego las unidades carto-
grificas en esa series. Asi, para obtener toda la informaci6n
sobre una unidad cartogrifica, se necesita leer tanto la des-
cripci6n de esa unidad, como la descripci6n de la series de
suelos a que pertenece.
En la descripci6n de la series hay una descripci6n corta del
perfil de suelo que se consider representative de esa series.
Tambi6n hay una descripci6n much mis detallada de ese
mismo perfil que los cientificos, ingenieros y otros pueden
usar para hacer interpretaciones altamente tecnicas. Mu-
chos de los terminos usados al describir la series y las uni-
dades cartogrificas se definen en el glosario, y otros t6rmi-
nos se definen en la secci6n "Como se Hizo este Catastro."
El cuerdaje aproximado y la extension proporcional de
los suelos se encuentra en la tabla 1. La "Guia a las Uni-
dades Cartogrificas" present una lista de las unidades car-
tograficas del area de Mayagiiez, con sus correspondientes
unidades de capacidad agricola y grupo de prestancia para
bosques, y la pAgina en que cada una de estas unidades esti
descrita.

Serie Aceitunas
La series Aceitunas consiste de suelos profundos, de buen
desagiie, bien fuertemente icidos y moderadamente perme-
ables. Estos suelos radican en valles internos, entire suelos
calizos. Se han formado de sedimentos lavados de los sue-
los circumdantes. Los declives varian entire 2 y 12 porcien-
to. El clima prevaleciente es subhumedo. La precipitaci6n
annual es de 55 a 65 pulgadas, y la temperature annual varia
entire 76 y 780 F.
En un perfil representative la capa superficial es pardo
rojiza oscura, bien fuertemente acida, arcillosa, como de 7
pulgadas de espesor. El subsuelo es rojo amarilloso y rojo,
bien fuertemente acido, firme y friable, levemente pegajoso
y plistico, arcilloso, que se extiende a profundidad de mis
de 60 pulgadas.
La gran parte ha sido usada para cafia de azucar por largo
tiempo. Solamente pocas areas se usan para pastos y cose-
chas para uso en la finca.
Perfil representative de Aceitunas arcilloso, 2 a 12 por-
ciento de declive, erodado, se puede encontrar a 4.0 kil6me-
tros al sureste de Aguadilla en un camino asfaltado, 2.3
kil6metros al sur del marcador de kil6metros 123.5 de la car-
retera no. 2; 8 metros al oeste de la carretera.
Ap-0 a 7 pulgadas, arcilloso, pardo-rojizo oscuro (5YR 3/4): estruc-
tura granular moderada median; firme, levemente pegajoso.
plistico; con muchas raices finas; muchos granos finos de
cuarzo; bien fuertemente icido: limited abrupt liso.






MAYAGUEZ AREA OF WESTERN PUERTO RICO 13

TABLE I.--APPROXIMATE ACREAGE AND PROPORTIONATE EXTENT OF THE SOILS

TABLA 1.--NOMERO APROXIMADO DE ACRES Y EXTENSION RELATIVE DE LOS SUELOS


Soil Acres Percent
Suelo Acres Porciento


Aceitunas clay, 2 to 12 percent slopes, eroded. 2,995 0.7
Aceitunas arcilloso, 2 a 12 porciento de declive, erodado.

Aceitunas sandy clay loam, 2 to 12 percent slopes, eroded. 414 .1
Aceitunas arenoso arcilloso 16mico, 2 a 12 porciento de declive, erodado.

Aguilita cobbly clay, 5 to 20 percent slopes. 92 (1/)
Aguilita guijarroso arcilloso, 5 a 20 porciento de declive.

Aguilita cobbly clay, 20 to 50 percent slopes. 507 .1
Aguilita guijarroso arcilloso, 20 a 50 porciento de declive.

Aibonito clay, 20 to 40 percent slopes, eroded. 138 (1/)
Aibonito arcilloso, 20 a 40 porciento de declive, erodado.

Alluvial land. 1,475 .3
Tierra aluvial.

Anones clay loam, 12 to 20 percent slopes. 414 .1
Anones arcilloso 16mico, 12 a 20 porciento de declive.

Anones clay loam, 20 to 40 percent slopes, eroded. 2,581 .6
Anones arcilloso 16mico, 20 a 40 porciento de declive, erodado.

Anones clay loam, 40 to 60 percent slopes, eroded. 3,134 .7
Anones arcilloso 16mico, 40 a 60 porciento de declive, erodado.

Bajura clay. 3,088 .7
Bajura arcilloso.

Bejucos sandy clay loam, 2 to 5 percent slopes. 369 .1
Bejucos arenoso arcilloso 16mico, 2 a 5 porciento de declive.

Bejucos sandy loam, 2 to 5 percent slopes. 2,765 .6
Bejucos arenoso 16mico, 2 a 5 porciento de declive.

Cabo Rojo clay, 2 to 12 percent slopes. 1,152 .3
Cabo Rojo arcilloso, 2 a 12 porciento de declive.

Cabo Rojo clay, 2 to 12 percent slopes, eroded. 184 (1/)
Cabo Rojo arcilloso, 2 a 12 porciento de declive, erodado.

Caguabo clay loam, 20 to 60 percent slopes, eroded. 30,830 6.6
Caguabo arcilloso 16mico, 20 a 60 porciento de declive, erodado.

Camaguey clay, 2 to 5 percent slopes. 369 .1
Camaguey arcilloso, 2 a 5 porciento de declive.

Catano sand. 2,811 .6
Catano arenoso.

Catano sandy clay loam. 230 .1
Catano arenoso arcilloso 16mico.

Cidral clay, 2 to 12 percent slopes, eroded. 1,705 .4
Cidral arcilloso, 2 a 12 porciento de declive, erodado.


See footnote at end of table.






14 SOIL SURVEY

TABLE 1.--APPROXIMATE ACREAGE AND PROPORTIONATE EXTENT OF THE SOILS--Continued

TABLA 1.--NOMERO APROXIMADO DE ACRES Y EXTENSION RELATIVE DE LOS SUELOS--Continuaci6n


Soil Acres Percent
Suelo Acres Porciento

Coastal beach. 553 0.1
Playa costanera.

Colinas clay loam, 12 to 20 percent slopes. 1,060 .2
Colinas arcilloso 16mico, 12 a 20 porciento de declive.

Colinas clay loam, 20 to 40 percent slopes. 8,019 1.7
Colinas arcilloso 16mico, 20 a 40 porciento de declive.

Colinas clay loam, 20 to 60 percent slopes, eroded. 1,014 .2
Colinas arcilloso 16mico, 20 a 60 porciento de declive, erodado.

Colinas cobbly clay loam, 12 to 20 percent slopes. 414 .1
Colinas guijarroso arcilloso l6mico, 12 a 20 porciento de declive.

Colinas cobbly clay loam, 20 to 40 percent slopes. 2,903 .6
Colinas guijarroso arcilloso 16mico, 20 a 40 porciento de declive.

Coloso silty clay loam. 10,599 2.3
Coloso limo arcilloso 16mico.

Consumo clay, 20 to 40 percent slopes. 23,272 5.0
Consumo arcilloso, 20 a 40 porciento de declive.

Consumo clay, 40 to 60 percent slopes, eroded. 42,443 9.2
Consumo arcilloso, 40 a 60 porciento de declive, erodado.

Corcega silty clay loam. 369 .1
Corcega limo arcilloso 16mico.

Cotito clay, 0 to 5 percent slopes, eroded. 691 .2
Cotito arcilloso, 0 a 5 porciento de declive, erodado.

Coto clay, 2 to 5 percent slopes, eroded. 8,894 1.9
Coto arcilloso, 2 a 5 porciento de declive, erodado.

Coto clay, 5 to 12 percent slopes, eroded. 3,871 .8
Coto arcilloso, 5 a 12 porciento de declive, erodado.

Coto sandy clay loam, 2 to 5 percent slopes. 184 (/)
Coto arenoso arcilloso 16mico, 2 a 5 porciento de declive.

Cuchillas silty clay loam, 20 to 60 percent slopes. 599 .1
Cuchillas limo arcilloso 16mico, 20 a 60 porciento de declive.

Daguey clay, 12 to 20 percent slopes, eroded. 1,567 .3
Daguey arcilloso, 12 a 20 porciento de declive, erodado.

Daguey clay, 20 to 40 percent slopes, eroded. 4,378 1.0
Daguey arcilloso, 20 a 40 porciento de declive, erodado.

Delicias clay, 5 to 20 percent slopes, eroded. 691 .2
Delicias arcilloso, 5 a 20 porciento de declive, erodado.

Descalabrado clay loam, 5 to 12 percent slopes. 414 .1
Descalabrado arcilloso 16mico, 5 a 12 porciento de declive.

Descalabrado clay loam, 12 to 20 percent slopes. 1,751 .3
Descalabrado arcilloso 16mico, 12 a 20 porciento de declive.


See footnote at end of table.






MAYAGUEZ AREA OF WESTERN PUERTO RICO 15

TABLE 1.--APPROXIMATE ACREAGE AND PROPORTIONATE EXTENT OF THE SOILS--Continued

TABLA 1.--NUMERO APROXIMADO DE ACRES Y EXTENSION RELATIVE DE LOS SUELOS--Continuaci6n

Soil Acres ,Percent
Suelo Acres Porciento


Descalabrado clay loam, 20 to 60 percent slopes. 8,848 1.9
Descalabrado arcilloso 16mico, 20 a 60 porciento de declive.

Dique silt loam. 1,290 .3
Dique limoso 16mico.

Espinal sand. 599 .1
Espinal arenoso.

Guanajibo sandy loam, 2 to 12 percent slopes. 553 .1
Guanajibo arenoso 16mico, 2 a 12 porciento de declive.

Guanajibo loam, 2 to 12 percent slopes. 968 .2
Guanajibo 16mico, 2 a 12 porciento de declive.

Guerrero sand, 2 to 5 percent slopes. 1,198 .3
Guerrero arenoso, 2 a 5 porciento de declive.

Humatas clay, 12 to 20 percent slopes, eroded. 4,654 1.0
Humatas arcilloso, 12 a 20 porciento de declive, erodado.

Humatas clay, 20 to 40 percent slopes, eroded. 11,383 2.4
Humatas arcilloso, 20 a 40 porciento de declive, erodado.

Humatas clay, 40 to 60 percent slopes, eroded. 16,682 3.6
Humatas arcilloso, 40 a 60 porciento de declive, erodado.

Humatas gravelly clay, 12 to 40 percent slopes. 968 .2
Humatas cascajoso arcTlloso, 12 a 40 porciento de declive.

Igualdad clay. 369 .1
Igualdad arcilloso.

Jacana clay, 5 to 12 percent slopes. 92 (1/)
Jacana arcilloso, 5 a 12 porciento de declive.

Jaucas sand. 138 (I/)
Jaucas arenoso.

Jobos sandy loam, 2 to 5 percent slopes. 2,949 .6
Jobos arenoso 16mico, 2 a 5 porciento de declive.

Juncal clay, 12 to 20 percent slopes, eroded. 922 .2
Juncal arcilloso, 12 a 20 porciento de declive, erodado.

Lares clay, 0 to 5 percent slopes, eroded. 2,489 .5
Lares arcilloso, 0 a 5 porciento de declive, erodado.

Lares clay, 5 to 20 percent slopes, eroded. 2,350 .5
Lares arcilloso, 5 a 20 porciento de declive, erodado.

Leveled clayey land. 277 .1
Tierra nivelada arcillosa.

Leveled clayey land, shallow. 92 (1/)
Tierra nivelada arcillosa, poco profunda.

Leveled land, frequently flooded. 369 .1
Tierra nivelada, inundable con frecuencia.


See footnote at end of table.






SOIL SURVEY


TABLE 1.--APPROXIMATE ACREAGE AND PROPORTIONATE EXTENT OF THE SOILS--Continued

TABLA 1.--NUMERO APROXIMADO DE ACRES Y EXTENSION RELATIVE DE LOS SUELOS--Continuaci6n

Soil Acres Percent
Suelo Acres Porciento

Leveled sandy loam. 184 (1/)
Tierra nivelada arenosa.

Limestone outcrop. 47,190 10.2
Afloraciones calizas.

Limestone rock land. 1,383 .3
Tierra roca caliza.

Los Guineos clay, 12 to 20 percent slopes, eroded. 184 (1/)
Los Guineos arcilloso, 12 a 20 porciento de declive, erodado.

Los Guineos clay, 20 to 60 percent slopes, eroded. 5,760 1.3
Los Guineos arcilloso, 20 a 60 porciento de declive, erodado.

Mabi clay, 2 to 5 percent slopes. 323 .1
Mabi arcilloso, 2 a 5 porciento de declive.

Mabi clay, 5 to 12 percent slopes, eroded. 830 .2
Mabi arcilloso, 5 a 12 porciento de declive, erodado.

Malaya clay, 20 to 60 percent slopes, eroded. 15,069 3.2
Malaya arcilloso, 20 a 60 porciento de declive, erodado.

Maleza fine sandy loam, 2 to 5 percent slopes. 645 .1
Maleza arena fina 16mica, 2 a 5 porciento de declive.

Mani silty clay loam, overwash. 1,106 .2
Mani limo arcilloso 16mico, detrito de erosi6n.

Mani clay. 599 .1
Mani arcilloso.

Maresua silty clay loam, 12 to 20 percent slopes, eroded. 277 .1
Maresua limo arcilloso 16mico, 12 a 20 porciento de declive, erodado.

Maresua silty clay loam, 20 to 60 percent slopes, eroded. 1,290 .3
Maresua limo arcilloso 16mico, 20 a 60 porciento de declive, erodado.

Mariana gravelly clay, 12 to 20 percent slopes, eroded. 230 .1
Mariana cascajoso arcilloso, 12 a 20 porciento de declive, erodado.

Mariana gravelly clay, 20 to 40 percent slopes, eroded. 323 .1
Mariana cascajoso arcilloso, 20 a 40 porciento de declive, erodado.

Maricao clay, 20 to 60 percent slopes, eroded. 4,009 .9
Maricao arcilloso, 20 a 60 porciento de declive, erodado.

Matanzas clay, 2 to 5 percent slopes. 1,613 .4
Matanzas arcilloso, 2 a 5 porciento de declive.

Matanzas-Limestone rock land complex, 0 to 5 percent slopes. 783 .2
Matanzas-Tierra roca caliza complejo, 0 a 5 porciento de declive.

Moca clay, 5 to 12 percent slopes, eroded. 691 .2
Moca arcilloso, 5 a 12 porciento de declive, erodado.

Moca clay, 12 to 20 percent slopes, eroded. 1,383 .3
Moca arcilloso, 12 a 20 porciento de declive, erodado.


See footnote at end of table.






MAYAGUEZ AREA OF WESTERN PUERTO RICO 17

TABLE 1.--APPROXIMATE ACREAGE AND PROPORTIONATE EXTENT OF THE SOILS--Continued

TABLA 1.--N6MERO APROXIMADO DE ACRES Y EXTENSION RELATIVE DE LOS SUELOS--Continuaci6n

Soil Acres Percent
Suelo Acres Porciento

Moca clay, 12 to 20 percent slopes, severely eroded. 323 0.1
Moca arcilloso, 12 a 20 porciento de declive, severamente erodado.

Moca clay, 20 to 40 percent slopes, severely eroded. 415 .1
Moca arcilloso, 20 a 40 porciento de declive, severamente erodado.

Montegrande clay, 2 to 12 percent slopes. 3,825 .8
Montegrande arcilloso, 2 a 12 porciento de declive.

Morado clay loam, 12 to 20 percent slopes, eroded. 369 .1
Morado arcilloso 16mico, 12 a 20 porciento de declive, erodado.

Morado clay loam, 20 to 40 percent slopes, eroded. 2,765 .6
Morado arcilloso 16mico, 20 a 40 porciento de declive, erodado.

Morado clay loam, 40 to 60 percent slopes, eroded. 9,032 2.0
Morado arcilloso 16mico, 40 a 60 porciento de declive, erodado.

Mucara clay, 5 to 12 percent slopes. 1,982 .4
Mfcara arcilloso, 5 a 12 porciento de declive.

Mucara clay, 12 to 20 percent slopes, eroded. 3,088 .7
Micara arcilloso, 12 a 20 porciento de declive, erodado.

Mucara clay, 20 to 40 percent slopes, eroded. 12,350 2.7
Mucara arcilloso, 20 a 40 porciento de declive, erodado.

Mucara clay, 40 to 60 percent slopes, eroded. 10,323 2.2
Mucara arcilloso, 40 a 60 porciento de declive, erodado.

Naranjo clay, 12 to 20 percent slopes. 1,336 .3
Naranjo arcilloso, 12 a 20 porciento de declive.

Nipe clay, 5 to 20 percent slopes, eroded. 2,212 .5
Nipe arcilloso, 5 a 20 porciento de declive, erodado.
Palmarejo silty clay loam, 5 to 12 percent slopes, eroded. 138 (1/)
Palmarejo limo arcilloso 16mico, 5 a 12 porciento de declive, erodado.

Perchas clay, 12 to 20 percent slopes, eroded. 2,581 .6
Perchas arcilloso, 12 a 20 porciento de declive, erodado.

Plata clay, 20 to 40 percent slopes, eroded. 1,705 .4
Plata arcilloso, 20 a 40 porciento de declive, erodado.

Plata clay, 40 to 60 percent slopes, eroded. 461 .1
Plata arcilloso, 40 a 60 porciento de declive, erodado.

Quebrada silty clay, 12 to 20 percent slopes, eroded. 461 .1
Quebrada limoso arcilloso, 12 a 20 porciento de declive, erodado.

Quebrada silty clay, 20 to 40 percent slopes, eroded. 1,751 .4
Quebrada limoso arcilloso, 20 a 40 porciento de declive, erodado.

Quebrada silty clay, 40 to 60 percent slopes, eroded. 2,258 .5
Quebrada limoso arcilloso, 40 a 60 porciento de declive, erodado.

Reilly gravelly loam. 2,535 .5
Reilly cascajoso 16mico.


See footnote at end of table.






SOIL SURVEY


TABLE 1.--APPROXIMATE ACREAGE AND PROPORTIONATE EXTENT OF

TABLA 1.--NIMERO APROXIMADO DE ACRES Y EXTENSION RELATIVE DE


SOILS--Continued

SUELOS--Continuaci6n


Soil Acres Percent
Suelo Acres Porciento


Rio Lajas sand, 2 to 5 percent slopes.
Rio Lajas arenoso, 2 a 5 porciento de declive.

Rio Piedras clay, 5 to 12 percent slopes, eroded.
Rfo Piedras arcilloso, 5 a 12 porciento de declive, erodado.

Rio Piedras clay, 12 to 20 percent slopes, eroded.
Rio Piedras arcilloso, 12 a 20 porciento de declive, erodado.

Riverwash. /
Detrito de ribera de rios.

Rosario clay, 12 to 20 percent slopes, eroded.
Rosario arcilloso, 12 a 20 porciento de declive, erodado.

Rosario clay, 20 to 40 percent slopes, eroded.
Rosario arcilloso, 20 a 40 porciento de declive, erodado.

Rosario clay, 40 to 60 percent slopes, eroded.
Rosario arcilloso, 40 a 60 porciento de declive, erodado.

San German gravelly clay loam, 12 to 20 percent slopes.
San German cascajo arcilloso 16mico, 12 a 20 porciento de declive.

San German gravelly clay loam, 20 to 40 percent slopes.
San German cascajo arcilloso 16mico, 20 a 40 porciento de declive.

San German cobbly sandy loam, 0 to 5 percent slopes.
San German guijarro arenoso 16mico, 0 a 5 porciento de declive.

San Sebastian gravelly clay, 20 to 60 percent slopes, eroded.
San Sebastian cascajoso arcilloso, 20 a 60 porciento de declive, erodado.

Santa Clara silty clay loam, 2 to 5 percent slopes.
Santa Clara limo arcillbso 16mico, 2 a 5 porciento de declive.

Santa Marta clay, 20 to 40 percent slopes, eroded.
Santa Marta arcilloso, 20 a 40 porciento de declive, erodado.

Santoni clay.
Santoni arcilloso.

Serpentinite outcrop.
Afloraciones de serpentinita.

Soller-Limestone rock land complex, 5 to 20 percent slopes.
Soller-Tierra roca caliza complejo, 5 a 20 porciento de decTive.

Soller-Limestone rock land complex, 20 to 40 percent slopes.
Soller-Tierra roca caliza complejo, 20 a 40 porciento de declive.

Soller cobbly clay, 5 to 20 percent slopes, eroded.
Soller guijarro arcilloso, 5 a 20 porciento de declive, erodado.

Soller cobbly clay, 20 to 40 percent slopes, eroded.
Soller guijarro arcilloso, 20 a 40 porciento de declive, erodado.

Soller clay, 2 to 5 percent slopes.
Soller arcilloso, 2 a 5 porciento de declive.


See footnote at end of table.


1,290


461


1,152


184


1,475


507


876


3,687


1,936


277


7,143


553


553


783


25,991


3,502


13,272


138


415


92


0.3


.1


.3


(1/)

.3


.1


.2


.8


.4


.1


1.6


.1


.1


.2


5.6


.8


2.9


(1/J

.1


(1/)


r






MAYAGUEZ AREA OF WESTERN PUERTO RICO 19

TABLE 1.--APPROXIMATE ACREAGE AND PROPORTIONATE EXTENT OF THE SOILS--Continued

TABLA l.--NUMERO APROXIMADO DE ACRES Y EXTENSION RELATIVE DE LOS SUELOS--Continuaci6n

Soil Acres Percent
Suelo Acres Porciento


Soller clay, 5 to 12 percent slopes. 323 0.1
Soller arcilloso, 5 a 12 porciento de declive.

Soller clay, 12 to 20 percent slopes. 1,152 .3
Soller arcilloso, 12 a 20 porciento de declive.

Soller clay, 20 to 40 percent slopes. 2,028 .4
Soller arcilloso, 20 a 40 porciento de declive.

Talante loam. 1 ,014 .2
Talante 16mico.

Tanama clay, 2 to 5 percent slopes, eroded. 553 .1
Tanama arcilloso, 2 a 5 porciento de declive, erodado.

Tanama clay, 5 to 12 percent slopes, eroded. 737 .2
Tanama arcilloso, 5 a 12 porciento de declive, erodado.

Tanama clay, 12 to 20 percent slopes, eroded. 968 .2
Tanama arcilloso, 12 a 20 porciento de declive, erodado.

Tanama clay, 20 to 40 percent slopes, eroded. 3,963 .9
Tanama arcilloso, 20 a 40 porciento de declive, erodado.

Tidal swamp. 1,336 .3
Pantano de marea.

Toa silty clay loam, 0 to 2 percent slopes. 7,926 1.7
Toa limo arcilloso 16mico, 0 a 2 porciento de declive.

Toa silty clay. 369 .1
Toa limoso arcilloso.

Voladora silty clay, 12 to 20 percent slopes, eroded. 2,028 .4
Voladora limoso arcilloso, 12 a 20 porciento de declive, erodado.

Voladora silty clay, 20 to 40 percent slopes, eroded. 3,088 .7
Voladora, lmoso arcilloso, 20 a 40 porciento de declive, erodado.

Voladora clay, 5 to 12 percent slopes, eroded. 1,152 .3
Voladora arcilloso, 5 a 12 porciento de declive, erodado.
Total------------------------------------------------------------- 460,835 100.0


/L
Less than 0.05 percent.






SOIL SURVEY


B21t-7 to 15 inches, yellowish-red (5YR 4/6) clay; moderate, fine
and medium, subangular blocky structure; firm, slightly
sticky and plastic; common fine roots; thin patchy clay films;
many fine quartz grains; very strongly acid: clear, smooth
boundary.
B22t-15 to 23 inches, yellowish-red (5YR 4/8) clay; weak, fine and
medium, subangular blocky structure: firm, slightly sticky
and plastic; few fine roots; thin patchy clay films; many fine
quartz grains; common root channels: very strongly acid;
clear, wavy boundary.
B23t-23 to 36 inches, yellowish-red (5YR 4/8) clay; weak, fine, sub-
angular blocky structure parting to weak, fine, granular;
friable, slightly sticky and plastic: few fine roots; common
fine quartz grains; common root channels: very strongly acid;
clear, wavy boundary.
B3-36 to 60 inches +, red (2.5YR 4/8) clay; weak, fine, subangular
blocky structure; shiny ped surfaces; firm, slightly sticky and
plastic; few fine roots; many fine quartz grains; very strongly
acid.
The A horizon has chroma of 4 to 6, and the Ap horizon ranges from
sandy clay loam to clay in texture. The B2 horizon has a hue of SYR
and 2.5YR, a value of 4 to 6, and a chroma of 6 or more. The structure
of this horizon ranges from weak fine and medium to moderate fine
and medium subangular blocky.
Aceitunas clay, 2 to 12 percent slopes, eroded (AaC2).-
This soil has the profile described as representative of the
series. The available water capacity is moderate, and fertili-
ty is medium.
Included in mapping were small areas of Coto clay and
Matanzas clay. These areas make up 10 percent or less of
the acreage.
This soil is suited to cultivated crops. Almost all the
acreage is used for sugarcane. Slope, past erosion, and haz-
ard of further erosion are limitations. Practices that control
erosion are needed where the soil is clean cultivated. The
soil is easily worked. Crops respond well to lime and fertil-
izer. (Capability unit IIIe-21; not in a woodland group)

Aceitunas sandy clay loam, 2 to 12 percent slopes,
eroded (AbC2).--This soil has a profile similar to the one
described as representative of the series, but the surface
layer consists of 5 to 10 inches of friable, slightly sticky and
slightly plastic sandy clay loam. Fertility is medium.

Included in mapping were small areas of Guanajibo sandy
loam. These areas make up 5 percent or less of the acreage.
This soil is suited to cultivated crops and has been used
mainly for sugarcane, vegetables, and papaya. Some areas
are irrigated. Slope, past erosion, and hazard of further ero-
sion are limitations. Practices that control erosion are re-
quired where the soil is clean cultivated. The soil is easily
worked. Crops respond well to fertilizer. (Capability unit
IIIe-21; not in a woodland group)




Aguilita Series
The Aguilita series consists of well-drained soils that are
calcareous and moderately permeable. These soils are very
shallow to soft limestone, and there are many hard lime-
stone cobblestones on the surface and throughout the pro-
file. These soils formed in residual material weathered from
limestone. The slope ranges from 5 to 50 percent. The cli-
mate is semiarid. Rainfall amounts to 30 to 40 inches, and
the annual temperature ranges from 770 to 800 F.


B21t-7 a 15 pulgadas, arcilloso rojo-amarillento (5YR 4/6); estructura
bloque subangular moderada-fina y median; firme, leve-
mente pegajoso, plastico; contenido comnin de raices finas:
finas peliculas laminares de arcilla; muchos granos finos de
cuarzo; bien fuertemente Acido; limited claro liso.
B22t-15 a 23 pulgadas, arcilloso rojo-amarillento (5YR 4/8): estruc-
tura bloque subangular debil fina y median; firme, levemente
pegajoso, plistico; algunas races finas; finas peliculas lami-
nares de arcilla; muchos granos finos de cuarzo; agujeros de
raices comunes; bien fuertemente Acido: limited claro ondu-
lante.
B23t-23 a 36 pulgadas, arcilloso rojo-amarillento (5YR.4/8); estruc-
tura bloque subangular debil-fina rompikndose a granular
debil-fina; friable, levemente pegajoso, plastico: pocas raicil-
las, granos finos de cuarzo comunes; tineles de races co-
munes; muy fuertemente Acido; limited claro ondulante.
B3-36 a 60 pulgadas +, arcilloso rojo (2,5YR 4/8); estructura bloque
subangular debil-fina con lustre en la superficie de los peds:
firme, levemente pegajoso, plAstico; de pocas raicillas: mu-
chos granos finos de cuarzo: bien fuertemente acido.
El horizonte A tiene cromas de 4 a 6, y el horizonte Ap varia en tex-
tura desde areno-arcilloso 16mico a arcilloso. El horizonte B2 tiene un
matiz de 5 YR y 2.5YR, un valor de 4 a 6, y cromas de 6 y mis. La es-
tructura de este horizonte varia desde debil final y median a modera-
damente fina y median bloque subangular.
Aceitunas arcilloso, 2 a 12 porciento de declive, erodado
(AaC2).-Este suelo tiene el perfil descrito como represen-
tativo de la series. Tiene una moderada capacidad de reten-
ci6n de agua accessible, y es de fertilidad median.
Areas pequefias de Coto arcilloso y Matanzas arcilloso
estin incluidos. Estas areas comprenden 10 porciento o mis
del cuerdaje.
Este suelo se presta para la producci6n de cosechas. Casi
todo el cuerdaje se usa para cafia de azucar. Los declives,
erosi6n pasada, y el peligro de fuerte erosi6n son limita-
ciones. Se necesitan practices para el control de la erosion si
se usan para cosechas de cultivo limpio. Estos suelos son
ficiles de labrar y responded bien al abono y a la cal. (Uni-
dad de capacidad IIIe-21; no esti en un grupo de bosques)
Aceitunas arenoso arcilloso lomico, 2 a 12 porciento de de-
clive, erodado(AbC2).-Este suelo tiene un perfil similar al
descrito como representative de la series, pero la capa super-
ficial consiste de 5 a 10 pulgadas de textura arenoso arcilloso
16mica, friable, ligeramente pegajosa, ligeramente plistica.
Su fertilidad es median.
Pequefias areas de Guanajibo arenoso 16mico estan inclui-
das. Estas areas no exceden al 5 porciento.
Estos suelos se prestan para la producci6n de cosechas, y
se han usado mayormente en cafia de azucar, hortalizas y
papayas. Algunas areas se encuentran bajo regadio. Su
pendiente, el efecto de la erosion sufrida en el pasado, y la
susceptibilidad a la erosi6n son limitaciones. Se requieren
practices para el control de la erosi6n cuando estos suelos
se usan en cosechas de laboreo limpio. Estos suelos son de
ficil laboreo y responded bien a la aplicaci6n de abonos.
(Unidad de capacidad IIIe-21; no esti en un grupo de
bosques)

Serie Aguilita
La series Aguilita consiste de suelos de buen desagiie que
son calcAreos y moderadamente permeables. Estos suelos
son muy poco profundos a la roca caliza blanda, y tienen
muchos guijarros calizos duros en la superficie y a traves del
perfil. Estos suelos se originaron en material residual deri-
vado de roca caliza. Los declives varian desde 5 al 50 por-
ciento. El clima es semi-arido. La lluvial annual varia de 30 a
40 pulgadas y la temperature promedio annual de 77 a 800 F.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


In a representative profile the surface layer consists of
very dark grayish-brown, calcareous clay that contains
many limestone cobblestones and is about 6 inches thick.
The underlying layer is calcareous, friable, nonsticky and
slightly plastic clay that contains many limestone cobble-
stones. Below this, at a depth of about 13 inches, is thick,
soft, porous limestone.
Most of the acreage is in brush and native pasture.

Representative profile of Aguilita cobbly clay, 20 to 50
percent slopes, 3 kilometers north of the town of Yauco, 2
kilometers on dirt road from kilometer marker 2.5 on High-
way No. 372 (Duey), 10 meters east of dirt road.

Ap-0 to 6 inches, very dark grayish-brown (10YR 3/2) cobbly clay;
moderate, fine and medium, granularstructure; slightly hard,
friable, slightly sticky and plastic; common fine roots; violent
effervescence; clear, smooth boundary.
C--6 to 13 inches, pale-yellow (5Y 7/3) cobbly clay; massive, but
parts to weak, fine, granular structure; soft, friable, non-
sticky and slightly plastic; few fine roots; few fine pores; vio-
lent effervescence; clear, wavy boundary.
C2-13 to 60 inches +, light yellowish-brown (2.5Y 6/4), soft, porous
limestone.
Depth to soft limestone ranges from 8 to 16 inches, and gravel or
cobblestone-size limestone fragments make up 35 to 50 percent of the
profile. The A horizon ranges from 4 to 8 inches in thickness and has a
hue of 10YR and a value and a chroma of 2 and 3. It has granular struc-
ture that ranges from moderate to strong in grade and fine to medium
in class. It is slightly sticky and slightly plastic or plastic. The upper
part of the C horizon has a color hue of 10YR and 5Y and a value of 4
or higher.
Aguilita cobbly clay, 5 to 20 percent slopes (AcD).-This
soil is on hills in the area adjoining the Lajas Valley.
Included in mapping were small areas that are not cobbly.
These areas make up 5 percent or less of the acreage.
This soil is not suited to cultivated crops because of the
cobblestones and the shallowness to soft limestone. The
low rainfall is also unfavorable. If well managed, this soil is
suited to guineagrass and other native pasture plants. (Capa-
bility unit VIe-16; not in a woodland group)


Aguilita cobbly clay, 20 to 50 percent slopes (AcE).-This
soil is on side slopes and ridgetops in the area adjoining the
Lajas Valley. It has the profile described as representative
of the series. Runoff is rapid, and erosion is a hazard.

Included in mapping were some small areas that are free
of cobblestones and other small areas where soft limestone
crops out. These areas make up 5 percent or less of the
acreage.
This soil is not suited to cultivated crops. Its use is re-
stricted to grazing, and it is mainly in pasture that has low
carrying capacity. The steeper areas are in brush and cac-
tus. Slope, runoff, and hazard of erosion are very severe
limitations. Establishment and maintenance of pasture are
difficult because of the shallowness to soft limestone, the
slope, and the low rainfall. (Capability unit VIIe-8; not in a
woodland group)


En un perfil representative la capa superficial consiste de
arcilla-pardo grisacea muy oscura, calcarea y que contiene
muchos guijarros calizos, y es como de 6 pulgadas de espe-
sor. La capa subyacente es calcarea, friable, no pegajosa y
ligeramente plistica, arcillosa, que contienen muchos gui-
jarros calizos. Debajo de estas capas, y a una profundidad
de 13 pulgadas hay piedra caliza, gruesa, blanda y porosa.
La mayor parte del cuerdaje esti en brefiales y past nati-
vo.
Perfil representative de Aguilita guijarroso arcilloso, 20 a
50 porciento de declive, 3 kil6metros al norte del pueblo de
Yauco, 2 kil6metros en camino desde el marcador de kil6m-
etro 2.5 en la carretera no. 372 (Duey), 10 metros al este de
este camino.
Ap-0 a 6 pulgadas, pardo grisAceo bien oscuro (10YR 3/2) guijarroso
arcilloso; estructura granular moderada fina y median; con-
sistencia ligeramente dura, friable, levemente pegajoso y
plastico; races finas comunes; efervescencia violent; limited
claro liso.
CI-6 a 13 pulgadas; amarillo pAlido (5Y 7/3) guijarroso arcilloso;
estructura macisa desmenuzAndose a granular debil fina; con-
sistencia blanda, friable, no pegajoso y levemente plastico;
pocas races finas; pocas cavidades finas; efervescencia vi-
olenta; limited claro ondulante.
C2-13 a 60 pulgadas +; roca caliza blanda porosa, color pardo ligero
amarillento (2.5Y 6/4).
La profundidad a la roca caliza varia desde 8 a 16 pulgadas, y el con-
tenido de cascajo y fragments de guijarros calizos en el perfil varia
entire 35 y 50 porciento. El horizonte A varia desde 4 a 8 pulgadas en
espesor, y tiene un matiz de 10YR y valores y cromas de 2 y 3. Tiene
estructura granular que varia desde moderada a fuerte en grado, y de
fina a median en clase. Es ligeramente pegajosa y de ligeramente
plistica a plastica. La parte superior del horizonte C tiene colors con
matices de 10YR y 5Y, y valores de 4 o mis altos.
Aguilita guijarroso arcilloso, 5 a 20 porciento de declive
(AcD).-Este suelo se encuentra en los cerros en el area
pr6xima al Valle de Lajas.
Se incluyen areas pequefias que no son guijarrosas. Estas
areas alcanzan el 5 porciento del cuerdaje.
Este suelo no se presta para cosechas de labrantio debido
a la presencia de guijarros y a la poca profundidad a la roca
caliza blanda. Lo escaso de la lluvia es una condici6n desfa-
vorable. Si se maneja bien este suelo, se presta para la siem-
bra de yerba de Guinea y otros pastos natives. (Unidad de
capacidad VIe-16; no esta en un grupo de bosque)
Aguilita guijarroso arcilloso, 20 a 50 porciento de declive
(AcE).-Este suelo radica en laderas y en cumbres pr6xi-
mas al area del Valle de Lajas. Tiene el perfil descrito como
representative de la series. El escurrimiento es rapido y la
erosion es un peligro.
Se incluyen pequefias areas que no tienen guijarros y
otras pequefias areas donde la piedra caliza blanda aflora a
la superficie. Estas areas no exceden el 5 porciento del cuer-
daje.
Estos suelos no se prestan para cosechas de labrantio. Su
uso se limita al pastoreo. Estos suelos se han dedicado
mayormente a pastos que tienen una capacidad de pastoreo
baja. Las areas mas inclinadas estin en brefiales y en cac-
tus. El declive, el escorrentio, y el peligro de erosion son
limitaciones several. La poca profundidad hasta la roca cal-
iza blanda, los declives escarpados y la poca lluvia dificultan
el establecimiento y conservaci6n de pastos. (Unidad de
capacidad VIIe-8; no esta en un grupo de bosque)






SOIL SURVEY


Aibonito Series
The Aibonito series consists of deep, well-drained soils
that are extremely acid and moderately permeable. These
soils are on side slopes and ridgetops. They formed in resid-
ual material weathered from volcanic rock. The slope
ranges from 20 to 40 percent. The climate is humid. Rainfall
amounts to 90 to 100 inches, and the annual temperature
ranges from 72 to 770 F.
In a representative profile the surface layer is dark yel-
lowish-brown, very strongly acid clay about 7 inches thick.
The subsoil is strong-brown, and yellowish-brown, ex-
tremely acid, firm and friable, slightly sticky and plastic clay
that extends to a depth of about 37 inches. The substratum
consists of thick, mixed yellowish-brown, light-gray, light
brownish-gray, dark reddish-gray, and strong-brown silty
clay loam (highly weathered friable saprolite).

Most of the acreage is used for coffee and pasture.

Representative profile of Aibonito clay, 20 to 40 percent
slopes, eroded, 4.8 kilometers south of the junction of High-
way No. 128 and Highway No. 129.
Ap-0 to 7 inches, dark yellowish-brown (IOYR 4/4) clay; weak, fine
and medium, subangular blocky structure; firm, slightly
sticky and plastic; many fine roots; very strongly acid; clear,
wavy boundary.
B21t-7 to 16 inches, strong-brown (7.5YR 5/6) clay; coatings of dark
grayish brown (IOYR 4/2); strong, coarse, subangular blocky
structure; firm, slightly sticky and plastic; common fine roots;
thin continuous clay films; extremely acid; clear, wavy
boundary.
B22t-16 to 30 inches, strong-brown (7.5YR 5/6) clay; strong, coarse,
subangular blocky structure; firm, slightly sticky and plastic;
few fine roots; thin patchy clay films; few fine volcanic frag-
ments; extremely acid; clear, smooth boundary.
B3-30 to 37 inches, yellowish-brown (IOYR 5/4) clay; common, fine,
faint mottles of light yellowish brown (IOYR 6/4) and few,
fine, faint mottles of light brownish gray (10YR 6/2); weak,
fine and medium, subangular blocky structure; friable, slight-
ly sticky and slightly plastic; few fine roots; thin patchy clay
films; extremely acid; clear, smooth boundary.

C-37 to 60 inches +, mixed yellowish-brown (IOYR 5/4), light-gray
(IOYR 7/1), light brownish-gray (IOYR 6/2), dark reddish-
gray (10R 4/1), and strong-brown (7.5YR 5/8) silty clay loam
(highly weathered saprolite) friable; extremely acid.
The thickness of the solum and the depth to variegated saprolite
ranges from 28 to 46 inches. Reaction ranges from very strongly acid
to extremely acid throughout the profile. The Ap horizon ranges from
dark yellowish brown (IOYR 4/4) to dark brown (IOYR 4/3) in color.
The B2t horizon ranges from strong brown (7.5YR 5/6) to brown
(7.5YR 5/2 to 5/4) in color and has strong to moderate, coarse, suban-
gular blocky structure. The thin clay films in this horizon range from
continuous to discontinuous. The C horizon ranges from silty clay
loam to clay in texture. The colors of the saprolite are generally a mix-
ture, in various proportions, of yellowish brown, light brownish gray,
dark reddish gray, dusky red, and brown.
Aibonito clay, 20 to 40 percent slopes, eroded (AdE2).-
This soil is on side slopes and narrow ridgetops of the vol-
canic uplands. Runoff is rapid, and erosion is a hazard. In-
cluded in mapping were spots of Consumo clay and a few
small spots where the slope is more than 40 percent.


Serie Aibonito
La series Aibonito consiste de suelos profundos, bien de-
saguados, que son extremadamente icidos y moderada-
mente permeables. Estos suelos ocurren en laderas y en
cumbres. Se originaron en material residual derivado de
rocas volcinicas. El declive varia desde el 20 al 40 porcien-
to. El clima es h6medo. La lluvia es de 90 a 100 pulgadas, y
la temperature annual varia desde 72 a 770 F.
En un perfil representative la capa superficial es pardo
amarillosa oscura, muy fuertemente Acida, arcillosa de alre-
dedor de 7 pulgadas de espesor. El subsuelo es pardo fuerte
y pardo amarilloso, extremadamente Acido, firme y friable,
levemente pegajoso y plastico, arcilloso que se extiende
hasta un profundidad de alrededor de 37 pulgadas. El sub-
strato es grueso, con colors pardo-amarilloso, gris, claro,
gris pardo-claro, gris rojizo oscuro y pardo fuerte, limo-ar-
cilloso 16mico (saprolito muy meteorizado y friable).
La mayor parte del cuerdaje se usa para cafe y para pas-
tos.
Perfil representative de Aibonito arcilloso, 20 a 40 por-
ciento de declive, erodado, 4.8 kil6metros al sur de la uni6n
de las carreteras nos. 128 y 129.
Ap-0 a 7 pulgadas, pardo amarillento-oscuro (IOYR 4/4) arcilloso:
estructura bloque subangular, d6bil, final y median; firme.
levemente pegajoso, plastico; muchas raices finas, bien
fuertemente acido; limited claro ondulante.
B21t-7 a 16 pulgadas, pardo fuerte (7.5YR 5/6) arcilla revestida de
color pardo grisaceo oscuro (IOYR 4/2): estructura bloque
subangular, fuerte gruesa; firme, levemente pegajoso. plisti-
co; presencia de raicillas, comunes peliculas de arcilla finas y
continues; extremadamente acido; limited claro ondulante.
B22t-16 a 30 pulgadas, pardo fuerte (7.5YR 5/6) arcilloso: estructura
bloque subangular, fuerte gruesa; firme, levemente pegajoso.
plastico; algunas raices finas; finas peliculas de arcilla; algu-
nos fragments volcinicos finos; extremadamente acido; lim-
ite claro liso.
B3-30 a 37 pulgadas; pardo amarillento (IOYR 5/4) arcilloso, con
manchas comunes, de contrast debiles y de tamafio fino. de
color pardo amarillento oscuro (IOYR 6/4), y algunas man-
chas, de contrastes d6biles y de tamano fino de color gris par-
do-claro (IOYR 6/2); estructura bloque subangular, debil, fino
y median; friable, levemente pegajoso, levemente plastico;
algunas raices finas; peliculas de arcilla finas: extremada-
mente acido; limited claro liso.
C-37 a 60 pulgadas +; pardo amarillento (IOYR 5/4) gris claro (IOYR
7/1), gris pardo-claro (IOYR 6/2), gris rojizo oscuro (10R 4/1)
y pardo intense (7.5YR 5/8) limo arcilloso 16mico; (saprolito
altamente meteorizado) friable; extremadamente icido.
El grosor de el solum y la profundidad hasta el saprolito veteado va-
ria desde 28 a 46 pulgadas. La reacci6n varia desde muy fuertemente
Acido hasta extremadamente acido a trav6s del peril. El horizonte Ap
varia desde pardo amarilloso oscuro (IOYR 4/4) a pardo oscuro (IOYR
4/3) en color. El horizonte B2t varia desde pardo fuerte (7.5YR 5/6) a
pardo (7.5YR 5/2 a 5/4) en color y tiene estructura bloque subangular
desde fuerte a moderada gruesa. Las finas peliculas de arcillas en este
horizonte varian desde continues a descontinuas. El horizonte C varia
en textura desde limo arcilloso 16mico a arcilla. Los colors del saprol-
ito son generalmente una mezcla en varias proporciones de pardo
amarilloso, pardo amarilloso leve, gris rojizo oscuro. rojo y pardo.
Aibonito arcilloso, 20 a 40 porciento de declive, erodado
(AdE2).-Este suelo ocurre en laderas y en cumbres estre-
chas en las alturas volcinicas. El escorrentio es ripido y la
erosion es un peligro. Se incluyen areas de Consumo arcillo-
so y algunas areas pequefias donde el declive es mayor de 40
porciento.







MAYAGUEZ AREA OF WESTERN PUERTO RICO


This soil is not suitable for clean cultivation, but it may be
used safely for pasture, woodland and coffee, or wildlife
habitat. It is used mainly for native pasture that has low
carrying capacity or for coffee. Some small patches are used
for subsistence crops, and some areas are in brushy forest.
The improvement of pasture by such practices as seeding,
liming, fertilizing, and controlling water is practical because
the condition of the soil is favorable. (Capability unit VIe-1;
woodland groups lol, lo2, lo3, lo4)


Alluvial Land
Alluvial land (An) is in lagoonlike positions and in depres-
sions on the flood plains of streams and rivers. The water
table is at or near the surface during most of the year, and
water covers the surface during the rainy season. The soil
material ranges from fine textured to medium textured.
Draining this soil is not feasible, because it is either difficult
or impossible to obtain drainage outlets.

This land type is not suitable for cultivation and has little
or no value as pasture, but it can be used for wildlife habi-
tat. (Capability unit VIIIw-1; not in a woodland group)


Anones Series
The Anones series consists of well-drained soils that are
strongly acid and moderately permeable. These soils are
shallow to saprolite. They formed in residual material that
consists of highly weathered, pinkish volcanic saprolite.
The slope ranges from 12 to 60 percent. The climate is hu-
mid. Rainfall amounts to 70 to 90 inches, and the annual
temperature ranges from 760 to 790 F.

In a representative profile the surface layer is dusky-red,
strongly acid clay loam about 6 inches thick. The subsoil is
dusky-red, strongly acid, nonsticky and slightly plastic silty
clay loam to a depth of about 13 inches. The substratum is
thick, very friable, nonsticky and nonplastic that has varie-
gated loam (saprolite) colors.

These soils are used for coffee, pasture, and subsistence
crops.
Representative profile of Anones clay loam, 20 to 40 per-
cent slopes, eroded, 8 kilometers east of the town of Mari-
cao, 3 kilometers on dirt road from kilometer marker 33.2
on Highway No. 105, 15 meters west of dirt road.

Ap-0 to 6 inches, clay loam that is reddish gray (10R 5/1) dry and
dusky red (2.5YR 3/2) moist; weak, fine, granular structure;
firm, nonsticky and slightly plastic; many fine roots; strongly
acid; clear, smooth boundary.
B-6 to 13 inches, silty clay loam that is reddish gray (10R 5/1) dry and
dusky red (2.5YR 3/2) moist; weak, medium, subangular
blocky structure; nonsticky and slightly plastic; common fine
roots; very fine pores; strongly acid; gradual, wavy bounda-
ry.
CI-13 to 27 inches, variegated loam that is weak red (10R 4/2)
rubbed; massive; very friable, nonsticky and nonplastic;
common fine roots; strongly acid; 50 percent of material is
saprolite; gradual, wavy boundary.
C2-27 to 40 inches +, loam; highly weathered volcanic rock in which
original rock structure is visible; rock fragments are easily
broken between fingers; strongly acid.


Este suelo no se presta para cultivo limpio, pero se puede
usar sin riesgos para pastos, bosques, caf6, o para vida sil-
vestre. Se usa mayormente para pastos nativos de pobre
capacidad de pastoreo o para caf6. Algunas porciones pe-
quefias se dedican a cultivos de subsistencia. Algunas areas
se hallan en bosques brefiosos. El mejoramiento de pastos
por practices tales como sementar, encalar, fertilizer y con-
trolar las aguas es prictico porque las condiciones del suelo
son favorables. (Unidad de capacidad VIe-1; grupos de
bosques lol, lo2, lo3, lo4)

Tierra Aluvial
Tierra aluvial (An) ocurre en bajos de lagunas y en depre-
siones ubicadas en las Ilanuras inundables de riachuelos y
rios. El nivel freitico esta en o cerca de la superficie durante
la mayor parte del afio, y el agua cubre la superficie durante
la 6poca de lluvia. La textura del material de suelo varia de
fina hasta median. No es factible proveer desagiies artifi-
ciales a estos suelos debido a lo dificil o impossible que se
hace instalar salidas de desagiies.
Estas tierras no se prestan para cultivo y tienen poco o
ningun valor como pastos, pero pueden usarse para vida sil-
vestre. (Unidad de capacidad VIIIw-l; no esta en un grupo
de bosques)

Serie Anones
La series Anones consiste de suelos bien desaguados, que
son fuertemente acidos y moderadamente permeables. Es-
tos suelos son poco profundos al saprolito. Se han formado
en materials residuales que consistent de saprolito volcini-
co altamente meteorizado y de color rosado. El declive va-
ria desde 12 a 60 porciento. El clima es h6medo. La lluvia es
de 70 a 90 pulgadas y la temperature annual varia desde 76 a
790 F.
En un perfil representative, la capa superficial es roja,
fuertemente acida, arcilloso 16mica, alrededor de 6 pulgadas
de espesor. El subsuelo es rojo, fuertemente acido, no pega-
joso, levemente plistico, limo arcilloso 16mico, a una pro-
fundidad de alrededor de 13 pulgadas. El substrato es grue-
so, muy friable, no pegajoso y no plastico, 16mico que tiene
colors veteados (saprolito).
Estos suelos se usan para caf6, pastos y cosechas de sub-
sistencia.
Perfil representative de Anones arcilloso 16mico, 20 a 40
porciento de declive, erodado, 8 kil6metros al este del pueb-
lo de Maricao, 3 kil6metros por camino que sale del marca-
dor de kil6metro 33.2 de la carretera no. 105, 15 metros al
oeste de este camino.
Ap-0 a 6 pulgadas; color en seco, gris rojizo (10R 5/1), color en h6me-
do rojo mate (2.5YR 3/2); arcilloso 16mico; estructura
granular, debil fina; firme, no pegajoso, levemente plistico,
presencia de raicillas abundante, fuertemente acido; limited
claro liso.
B-6 a 13 pulgadas; color en seco, gris rojizo (10R 5/1); color en h6me-
do, rojo mate (2.5YR 3/2); limo arcilloso l6mico; estructura
bloque subangular debil median; no pegajoso, levemente
plistico; presencia de raicillas comunes; poros finos y abun-
dantes; fuertemente Acido; limited gradual ondulante.
Cl-13 a 27 pulgadas; color rojo pilido (10R 4/2) 16mico y veteado;
estructura compact; consistencia bien friable, no pegajoso,
no plfstico; presencia de raices comunes; fuertemente Acido;
la mitad del horizonte consiste de saprolito; limited gradual
ondulante.
C2-27 a 40 pulgadas +; roca volcfnica intensamente meteorizada
pero que aun conserve la estructura de la roca original; los
fragments de roca rompen facilmente al comprimirlos entire
los dedos; fuertemente acidos.







MAYAGUEZ AREA OF WESTERN PUERTO RICO


This soil is not suitable for clean cultivation, but it may be
used safely for pasture, woodland and coffee, or wildlife
habitat. It is used mainly for native pasture that has low
carrying capacity or for coffee. Some small patches are used
for subsistence crops, and some areas are in brushy forest.
The improvement of pasture by such practices as seeding,
liming, fertilizing, and controlling water is practical because
the condition of the soil is favorable. (Capability unit VIe-1;
woodland groups lol, lo2, lo3, lo4)


Alluvial Land
Alluvial land (An) is in lagoonlike positions and in depres-
sions on the flood plains of streams and rivers. The water
table is at or near the surface during most of the year, and
water covers the surface during the rainy season. The soil
material ranges from fine textured to medium textured.
Draining this soil is not feasible, because it is either difficult
or impossible to obtain drainage outlets.

This land type is not suitable for cultivation and has little
or no value as pasture, but it can be used for wildlife habi-
tat. (Capability unit VIIIw-1; not in a woodland group)


Anones Series
The Anones series consists of well-drained soils that are
strongly acid and moderately permeable. These soils are
shallow to saprolite. They formed in residual material that
consists of highly weathered, pinkish volcanic saprolite.
The slope ranges from 12 to 60 percent. The climate is hu-
mid. Rainfall amounts to 70 to 90 inches, and the annual
temperature ranges from 760 to 790 F.

In a representative profile the surface layer is dusky-red,
strongly acid clay loam about 6 inches thick. The subsoil is
dusky-red, strongly acid, nonsticky and slightly plastic silty
clay loam to a depth of about 13 inches. The substratum is
thick, very friable, nonsticky and nonplastic that has varie-
gated loam (saprolite) colors.

These soils are used for coffee, pasture, and subsistence
crops.
Representative profile of Anones clay loam, 20 to 40 per-
cent slopes, eroded, 8 kilometers east of the town of Mari-
cao, 3 kilometers on dirt road from kilometer marker 33.2
on Highway No. 105, 15 meters west of dirt road.

Ap-0 to 6 inches, clay loam that is reddish gray (10R 5/1) dry and
dusky red (2.5YR 3/2) moist; weak, fine, granular structure;
firm, nonsticky and slightly plastic; many fine roots; strongly
acid; clear, smooth boundary.
B-6 to 13 inches, silty clay loam that is reddish gray (10R 5/1) dry and
dusky red (2.5YR 3/2) moist; weak, medium, subangular
blocky structure; nonsticky and slightly plastic; common fine
roots; very fine pores; strongly acid; gradual, wavy bounda-
ry.
CI-13 to 27 inches, variegated loam that is weak red (10R 4/2)
rubbed; massive; very friable, nonsticky and nonplastic;
common fine roots; strongly acid; 50 percent of material is
saprolite; gradual, wavy boundary.
C2-27 to 40 inches +, loam; highly weathered volcanic rock in which
original rock structure is visible; rock fragments are easily
broken between fingers; strongly acid.


Este suelo no se presta para cultivo limpio, pero se puede
usar sin riesgos para pastos, bosques, caf6, o para vida sil-
vestre. Se usa mayormente para pastos nativos de pobre
capacidad de pastoreo o para caf6. Algunas porciones pe-
quefias se dedican a cultivos de subsistencia. Algunas areas
se hallan en bosques brefiosos. El mejoramiento de pastos
por practices tales como sementar, encalar, fertilizer y con-
trolar las aguas es prictico porque las condiciones del suelo
son favorables. (Unidad de capacidad VIe-1; grupos de
bosques lol, lo2, lo3, lo4)

Tierra Aluvial
Tierra aluvial (An) ocurre en bajos de lagunas y en depre-
siones ubicadas en las Ilanuras inundables de riachuelos y
rios. El nivel freitico esta en o cerca de la superficie durante
la mayor parte del afio, y el agua cubre la superficie durante
la 6poca de lluvia. La textura del material de suelo varia de
fina hasta median. No es factible proveer desagiies artifi-
ciales a estos suelos debido a lo dificil o impossible que se
hace instalar salidas de desagiies.
Estas tierras no se prestan para cultivo y tienen poco o
ningun valor como pastos, pero pueden usarse para vida sil-
vestre. (Unidad de capacidad VIIIw-l; no esta en un grupo
de bosques)

Serie Anones
La series Anones consiste de suelos bien desaguados, que
son fuertemente acidos y moderadamente permeables. Es-
tos suelos son poco profundos al saprolito. Se han formado
en materials residuales que consistent de saprolito volcini-
co altamente meteorizado y de color rosado. El declive va-
ria desde 12 a 60 porciento. El clima es h6medo. La lluvia es
de 70 a 90 pulgadas y la temperature annual varia desde 76 a
790 F.
En un perfil representative, la capa superficial es roja,
fuertemente acida, arcilloso 16mica, alrededor de 6 pulgadas
de espesor. El subsuelo es rojo, fuertemente acido, no pega-
joso, levemente plistico, limo arcilloso 16mico, a una pro-
fundidad de alrededor de 13 pulgadas. El substrato es grue-
so, muy friable, no pegajoso y no plastico, 16mico que tiene
colors veteados (saprolito).
Estos suelos se usan para caf6, pastos y cosechas de sub-
sistencia.
Perfil representative de Anones arcilloso 16mico, 20 a 40
porciento de declive, erodado, 8 kil6metros al este del pueb-
lo de Maricao, 3 kil6metros por camino que sale del marca-
dor de kil6metro 33.2 de la carretera no. 105, 15 metros al
oeste de este camino.
Ap-0 a 6 pulgadas; color en seco, gris rojizo (10R 5/1), color en h6me-
do rojo mate (2.5YR 3/2); arcilloso 16mico; estructura
granular, debil fina; firme, no pegajoso, levemente plistico,
presencia de raicillas abundante, fuertemente acido; limited
claro liso.
B-6 a 13 pulgadas; color en seco, gris rojizo (10R 5/1); color en h6me-
do, rojo mate (2.5YR 3/2); limo arcilloso l6mico; estructura
bloque subangular debil median; no pegajoso, levemente
plistico; presencia de raicillas comunes; poros finos y abun-
dantes; fuertemente Acido; limited gradual ondulante.
Cl-13 a 27 pulgadas; color rojo pilido (10R 4/2) 16mico y veteado;
estructura compact; consistencia bien friable, no pegajoso,
no plfstico; presencia de raices comunes; fuertemente Acido;
la mitad del horizonte consiste de saprolito; limited gradual
ondulante.
C2-27 a 40 pulgadas +; roca volcfnica intensamente meteorizada
pero que aun conserve la estructura de la roca original; los
fragments de roca rompen facilmente al comprimirlos entire
los dedos; fuertemente acidos.






SOIL SURVEY


The solum ranges from 10 to 18 inches in thickness, and the depth to
highly weathered saprolite ranges from 20 to 36 inches. The A and B
horizons range from silty clay loam to clay loam in texture and when
moist have a hue of 10YR and 2.5YR, a value of 3 and 4, and a chroma
of 2 to 4. The C horizon is coarser textured than the A and B horizons
and has colors that are influenced by the variegation in the saprolite.

Anones clay loam, 12 to 20 percent slopes (AoD).-This
soil is on side slopes and foot slopes of the uplands. It has a
profile similar to the one described as representative of the
series, but the surface layer is thicker. This soil has been
affected less by erosion than Anones clay loam, 20 to 40
percent slopes, eroded. This soil has a dusky red surface
layer 8 to 10 inches thick and a red or dusky red, nonsticky
subsoil 8 to 12 inches thick. Runoff is rapid, the available
water capacity is moderate, and natural fertility is medium
to low.

Included in mapping were a few areas of Consumo clay
and Humatas clay. These areas make up 10 percent or less
of the acreage.
This soil is suited to cultivated crops, and a large acreage
is in subsistence crops. The soil is easily worked. Slope,
runoff, past erosion, and hazard of erosion are severe limi-
tations. Very careful management is needed in cultivated
areas. Crops respond well to lime and fertilizer. (Capability
unit IVe-6; woodland suitability groups lol, lo2, 1o3, 1o4)

Anones clay loam, 20 to 40 percent slopes, eroded (AoE2).
-This soil is on side slopes and ridgetops of the uplands. It
has the profile described as representative of the series.
Runoff is rapid, the available water capacity is moderate,
and natural fertility is medium to low.

Included in mapping were a few severely eroded areas
where the substratum is exposed and the surface has an
ashy appearance. Also included were some small areas of
Consumo clay and Humatas clay. These inclusions make up
15 percent or less of the acreage.

This soil is not suited to cultivated crops. Its use is re-
stricted to pasture, coffee, or woodland. The choice of
plants is restricted. Slope, runoff, past erosion, and hazard
of further erosion are severe limitations. Crops respond
well to heavy applications of lime and fertilizer. (Capability
unit VIe-13; woodland suitability groups lol, lo2, lo3, 1o4)

Anones clay loam, 40 to 60 percent slopes, eroded (AoF2).
-This soil is on strongly dissected sides and tops of ridges
in the uplands. It has a profile similar to the one described as
representative of the series, but it has a slightly thinner sur-
face layer because past erosion has affected this soil. This
soil has a surface layer of dusky red clay loam about 3 to 5
inches thick and a dusky red, nonsticky subsoil. Runoff is
rapid.

Included in mapping were severely eroded spots where
weathered rock is exposed and small areas of Consumo clay
and Humatas clay. These areas make up 5 percent or less of
the acreage.


El solum varia desde 10 a 18 pulgadas en grosor, y la profundidad al
saprolito que esta altamente meteorizado varia desde 20 hasta 36 pul-
gadas. Los horizontes A y B varian en textura desde limo arcilloso
16mico a arcilloso 16mico, y cuando estan humedos tienen un matiz de
10YR y 2.5YR, un valor de 3 y 4 y cromas de 2 a 4. El horizonte C tiene
textura mis gruesa que los horizontes A y B, y los colors estan in-
fluenciados por el veteamiento del saprolito.
Anones arcilloso 16mico, 12 a 20 porciento de declive
(AoD).-Este suelo esti en laderas y faldas de las alturas.
Tiene un perfil similar al descrito como representative de la
series, pero la capa superficial es mis gruesa. Este suelo ha
sido menos afectado por la erosi6n que Anones arcilloso
16mico, 20 a 40 porciento de declive, erodado. Este suelo
tiene una capa superficial color rojo mate de 8 a 10 pulgadas
de espesor, y un subsuelo de rojo a rojo mate, no pegajoso,
de 8 a 12 pulgadas de espesor. El escurrimiento es ripido, la
capacidad de retenci6n de agua asequible es moderada, y la
fertilidad natural es de median a baja.
Se incluyen algunas areas pequefias de Consumo arcilloso
y de Humatas arcilloso. Estas areas comprenden el 10 por-
ciento o menos del cuerdaje total.
Este suelo se presta para cosechas de cultivo limpio, y un
area considerable esta en cosechas para uso en la finca. El
suelo es de facil laboreo. El declive, el escurrimiento, la
erosion pasada y el peligro de erosi6n son limitaciones sev-
eras. Se necesita un manejo muy cuidadoso en las areas que
estan bajo cultivo. Las cosechas responded bien a la appli-
caci6n de cal y abonos. (Unidad de capacidad IVe-6; grupos
de bosques lol, lo2, lo3, lo4)
Anones arcilloso 16mico, 20 a 40 porciento de declive, ero-
dado (AoE2).-Este suelo se encuentra en laderas y en
cumbres de las alturas. Tiene el perfil descrito como repre-
sentativo de la series. El escurrimiento es ripido, la capaci-
dad de retenci6n de agua asequible es moderada, la fertili-
dad natural es de median a baja.
Se incluyen algunas areas severamente erodadas donde el
substrato esta expuesto y la superficie tiene una apariencia
de cenizas. Tambien se incluyen algunas areas pequefias de
Consumo arcilloso y de Humatas arcilloso. Estas inclu-
siones comprenden el 15 porciento o menos del cuerdaje
total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esta restrict a pastos, caf6, y bosques. La selecci6n
de plants esti restrict. El declive, el escunrimiento, la ero-
si6n pasada y el peligro de erosi6n future son limitaciones
several. Las cosechas responded bien a la aplicaci6n de cal
y abonos. (Unidad de capacidad VIe-13; grupos de bosques
lol, 102, lo3, lo4)
Anones arcilloso 16mico, 40 a 60 porciento de declive, ero-
dado (AoF2).-Este suelo se encuentra en laderas y en
cumbres de las alturas que estin fuertemente bisectadas.
Tiene un perfil similar al descrito como representative de la
series, pero la capa superficial es un poco mis delgada, debi-
do a que la erosion ha afectado a este suelo. El suelo tiene
una capa superficial rojo mate, de textura arcilloso 16mica,
de alrededor de 3 a 5 pulgadas de espesor., y un subsuelo
rojo mate, no pegajoso. El escurrimiento es ripido.
Se incluyen areas pequefias que estin severamente eroda-
das y donde la roca meteorizada esti expuesta, y tambiin
areas pequefias de Consumo arcilloso y Humatas arcilloso.
Estas areas comprenden el 5 porciento o menos del cuerdaje
total.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


This soil is not suitable for cultivation, but it is suited to
grazing, woodland, or wildlife habitat. Slope, runoff, shal-
lowness to saprolite, past erosion, and hazard of further
erosion are limitations. (Capability unit VIIe-6; woodland
suitability groups lol, lo2, 1o3, lo4)


Bajura Series
The Bajura series consists of poorly drained soils that are
medium acid and slowly permeable. These soils are in the
lower lying areas of the flood plains along rivers and drain-
age channels. They formed in recent deposits of silt and
clay washed from the volcanic and limestone hills. The wa-
ter table is seasonally high. The climate is humid. The an-
nual temperature ranges from 76' to 790 F.

In a representative profile the surface layer is very dark
grayish-brown, medium acid clay about 6 inches thick. The
subsoil is very dark grayish-brown and gray, medium acid,
very firm, sticky and plastic clay to a depth of about 12 inch-
es. The substratum is dark-gray or dark greenish-gray, me-
dium acid, very firm, sticky and plastic clay.


Most of the acreage is in sugarcane.
Representative profile of Bajura clay, 3.2 kilometers
northwest of the town of Cabo Rojo, 152 meters northeast
on old railroad from kilometer marker 3.2 of Highway No.
103, 15 meters north of old railroad.

Ap-0 to 6 inches, very dark grayish-brown (10YR 3/2) clay; massive;
few pressure faces; hard, firm, slightly sticky and plastic;
common, fine, black concretions; many fine roots; medium
acid; clear, smooth boundary.

B2-6 to 12 inches, very dark grayish-brown (2.5Y 3/2) and gray (2.5Y
6/0) clay; few, medium, distinct mottles of reddish brown
(5YR 4/4); weak, fine and medium, subangular blocky struc-
ture; few pressure faces; very firm, sticky and plastic; com-
mon, fine, black concretions; common fine roots; medium
acid; gradual, smooth boundary.
Clg-12 to 32 inches, dark-gray (N 4/0) and dark greenish-gray (5BG
4/1) clay; few, medium, distinct mottles of brown (7.5YR 4/
4); massive; few pressure faces; very firm, sticky and plastic;
few fine roots; medium acid; gradual, smooth boundary.

C2g-32 to 54 inches +, dark greenish-gray(5BG 4/l)clay; few, fine,
distinct mottles of brown (7.5YR 4/4); massive; few slicken-
sides and pressure faces; very firm, sticky and plastic, medi-
um acid.

The cracks in these soils are more than I centimeter wide during the
dry season in most years. The depth to the gleyed layer ranges from 8
to 16 inches, and the depth to the water table ranges from 4 to 30 inch-
es. The A horizon has a hue of 10YR to 2.5Y, a value of 2 and 3, and a
chroma of 2 or less. The B horizon has a color hue of 2.5Y, a value of 3
to 6, and a chroma of 2 and lower. The B and C horizons have few to
common mottles of brown and reddish brown.

Bajura clay(Ba).-This soil is nearly level. It is on the
flood plains along the river in the lower lying areas that are
farther from the riverbanks. It is subject to frequent flood-
ing that causes some damage to crops. The water table is
seasonally high. This soil is fertile. Permeability is slow in
the subsoil, and the available water capacity is high.


Este suelo no se presta para cosechas de cultivo limpio,
pero si se presta para pastoreo, para bosques o para habitat
de vida silvestre. El declive, el escurrimiento, la poca pro-
fundidad al saprolito, la erosi6n pasada y el peligro de future
erosion son limitaciones. (Unidad de capacidad VIIe-6; gru-
pos de bosques lol, 1o2, 1o3, lo4)

Serie Bajura
La series Bajura consiste de suelos de desagiie pobre. que
son medianamente acidos, y de permeabilidad lenta. Estos
suelos estin en las areas mas bajas de los Ilanos inundables
de los rios y canales de desagiie. Se han formado en deposi-
tos recientes de limo y arcilla, que han sido lavados desde
los montes volcAnicos y calizos. El nivel freitico es alto por
temporadas. El clima es himedo. La temperature annual va-
ria desde 760 hasta 790 F.
En un perfil representative la capa superficial es grisiceo-
pardo muy oscura, medianamente icida, arcillosa de alrede-
dor de 6 pulgadas de espesor. El subsuelo es grisaceo-pardo
muy oscuro, y gris, medianamente acido, muy firme, pega-
joso y plistico, arcilloso hasta una profundidad de alrede-
dor de 12 pulgadas. El substrato es gris oscuro o gris verdo-
so oscuro, medianamente acido, muy firme, pegajoso y
plistico, y arcilloso.
La mayor parte del cuerdaje esta en caiia de az6car.
Un perfil representative de Bajura arcilloso, 3.2 kil6me-
tros al noroeste del pueblo de Cabo Rojo, 152 metros al no-
reste de una estaci6n de ferrocarril vieja, desde el marcador
de kil6metro 3.2 de la carretera no. 103, 15 metros al norte
de la estaci6n.
Ap-0 a 6 pulgadas, color pardo grisiceo bien oscuro (10YR 3/2) arcil-
loso; estructura macisa con algunos pianos de presi6n; con-
sistencia al secarse dura y al humedecerse firme, levemente
pegajoso y plastico; concreciones finas y oscuras son co-
munes; presencia de raicillas comunes; medianamente acido,
limited claro liso.
B2-6 a 2 pulgadas, color pardo-grisAceo bien oscuro (2.5Y 5/2) y gris
(2.5Y 6/0); arcilloso; abigarrado con algunas manchas preci-
sas de color pardo-rojizas (5YR 4/4); estructura bloque
subangular, debil-fina y median algunos pianos de presi6n;
consistencia bien firme, pegajosa, plistica; concreciones
finas y oscuras son comunes; presencia de raicillas comunes;
medianamente Acidos, limited gradual liso.
Clg-12 a 32 pulgadas, color gris oscuro (N 4/0) y gris verde oscuro
(5BG 4/1) arcilloso; abigarrado con algunas manchas precisas
de color pardo (7.5YR 4/4); estructura macisa, con algunos
pianos de presi6n; consistencia bien fire; pegajoso, plisti-
co; presencia de raicillas, algunas; medianamente icido; lim-
ite gradual liso.
C2g-32 a 54 pulgadas +, gris verde oscuro (5BG 4/1) arcilloso; abigar-
rado con algunas manchas precisas de color pardo (7.5YR 4/
4) estructura macisa con algunos pianos de resbalamiento y
pianos de presi6n; consistencia fire, pegajosa y plastica;
presencia de raicillas, algunas; medianamente acido.
Las grietas en estos suelos son de mas de 1 centimetro de ancho
durante la 6poca de sequoia en la mayor parte de los afios. La profundi-
dad a las capas gleizadas varia desde 8 a 16 pulgadas, y la profundidad
al nivel freftico varia desde 4 hasta 30 pulgadas. El horizonte A tiene
matices de 10YR y 2.5Y, valor de 2 a 3 y cromas de 2 o menos. El hori-
zonte B tiene color con matiz de 2.5Y, valor de 3 a 6 y cromas de 2 o
menos. Los horizontes B y C tienen manchas color pardo o pardo-ro-
jizas y varian desde pocas hasta comunes.
Bajura arcilloso (Ba).-Este suelo es casi Ilano. Esti en
los llanos inundables a lo largo de los rios, en las areas mas
bajas que estin mis retiradas del rio. Esta sujeto a inunda-
ciones frecuentes que causan daflo a las cosechas. El nivel
freitico esta peri6dicamente alto. Este suelo es f6rtil. La
permeabilidad es lenta en el subsuelo, y la capacidad de re-
tenci6n de agua asequible es alta.






SOIL SURVEY


Included in mapping were areas of Coloso silty clay loam
and Igualdad clay. These areas make up 5 percent or less of
the acreage.
This soil is suited to cultivated crops, but if properly
drained and managed, it can be used for sugarcane. It is not
easily worked. Frequent flooding, permeability of the sub-
soil, seasonally high water table, and some waterlogging
that continues after the soil has been drained are severe lim-
itations. The choice of plants is restricted; complex manage-
ment practices are needed; and the timing of tilling, plant-
ing, and harvesting is restricted. (Capability unit IIIw-2; not
in a woodland group)


Bejucos Series
The Bejucos series consists of deep, gently sloping, well-
drained, loamy soils that are very strongly acid and moder-
ately permeable. The soils are on the Coastal Plains close to
the limestone hills. They formed in mottled Coastal Plain
materials. The climate is subhumid. Rainfall amounts to 55
to 65 inches, and the annual temperature ranges from 760 to
780 F.
In a representative profile the surface layer is dark yel-
lowish-brown, very strongly acid sandy loam about 9 inches
thick. The upper part of the subsoil consists of strongly
cemented layers of dark yellowish-brown, very strongly
acid, very firm, slightly sticky and plastic silty clay loam and
silty clay. The lower part of the subsoil consists of a thick,
weakly cemented layer of strong-brown, very strongly acid,
very firm, sticky and plastic silty clay loam that has com-
mon, fine, red and pinkish-gray mottles.


Most of the acreage is in native pasture, but some areas
are in sugarcane and subsistence crops.

Representative profile of Bejucos sandy loam, 2 to 5 per-
cent slopes, 3.2 kilometers south of town of Isabela, 900
meters east of kilometer 2.0 on Highway No. 112 on dirt
road, 8 meters south of road.
Ap-O to 9 inches, dark yellowish-brown (10YR 4/4) sandy loam;
weak, fine, granular structure; loose, very friable, nonsticky
and nonplastic; many fine roots; very strongly acid; abrupt,
smooth boundary.
BI-9 to 13 inches, dark yellowish-brown (10YR 4/4) sandy clay loam;
weak, coarse, subangular blocky structure; very firm, slightly
sticky and plastic; common fine roots; few fine iron concre-
tions; strongly cemented; very strongly acid; clear, smooth
boundary.
B21t-13 to 18 inches, dark yellowish-brown (10YR 4/4) silty clay
loam; few, medium, faint mottles of yellowish brown (10YR
5/6); moderate, coarse, subangular blocky structure; very
firm, slightly sticky and plastic; few fine roots; thin patchy
clay films; few fine iron concretions; strongly cemented; very
strongly acid: clear, smooth boundary.

B22t-18 to 37 inches, yellowish-brown (10YR 5/6) silty clay; exterior
of peds coated with dark yellowish brown (10YR 4/4); moder-
ate, medium, subangular blocky structure; very firm, sticky
and plastic; few fine roots; thin patchy clay films; common,
fine and medium iron concretions; strongly cemented; very
strongly acid; abrupt, wavy boundary.


Se incluyen algunas areas de Coloso limo arcilloso 16mico
y de Igualdad arcilloso. Estas areas comprenden el 5 por-
ciento o menos del cuerdaje.
Este suelo se presta para cosechas de cultivo limpio, pero
si se desagua y se maneja debidamente, puede usarse para
cania de azucar. Este suelo no es de ficill laboreo. Inunda-
ciones frecuentes, la permeabilidad del subsuelo, el nivel
freitico peri6dicamente alto, y la saturaci6n del suelo que
contin6a despu6s de haberse desaguado son limitaciones
several. La selecci6n de plants esta restrict; se requieren
practices de manejo complejas; y los periods de cultivo,
siembra y recolecci6n tambi6n estan restrictos. (Unidad de
capacidad IIIw-2; no esti en un grupo de bosques)

Serie Bejucos
La series Bejucos consiste de suelos profundos, ligera-
mente inclinados, de buen desagiie, 16micos, que son muy
fuertemente acidos y moderadamente permeables. Los sue-
los estin en los Ilanos costaneros, cerca de los montes cali-
zos. Se formaron en materials moteados de los llanos cos-
taneros. El clima es subhumedo. La lluvia es de 55 a 65 pul-
gadas, y la temperature annual varia desde 76 hasta 780 F.
En un perfil representative la capa superficial es pardo-
amarillosa oscura, muy fuertemente acida, arenoso-16mica,
de alrededor de 9 pulgadas de espesor. La parte superior del
perfil consiste de capas fuertemente cementadas, pardo-
amarilloso oscuras, muy fuertemente Acidas, muy firmes,
ligeramente pegajosas y plasticas limo arcilloso 16mica y
limo arcillosa. La parte inferior del subsuelo consiste de
capas gruesas debilmente cementadas, de color pardo
fuerte, muy fuertemente acidas, muy fires, pegajosas y
pl6sticas limo arcilloso 16mica, que tiene manchas co-
munes y finas de color rojo y gris rosado.
Una parte considerable del cuerdaje esti en pastos nati-
vos, pero algunas areas estin en caria de az6car y cosechas
para el uso en la finca.
Perfil representative de Bejucos arenoso 16mico, 2 a 5
porciento de declive, 3.2 kil6metros al sur del pueblo de
Isabela, 900 metros al este del kil6metro 2.0 en la carretera
no. 112, en camino de piedra, 8 metros al sur de ese camino.
Ap-0 a 9 pulgadas, pardo-amarillento oscuro (10YR 4/4) arenoso
16mico; estructura granular, debil, final; consistencia suelta.
bien friable, no pegajoso, no plastico: presencia de raicillas.
muchas; bien fuertemente acido; limited abrupto liso.
Bl-9 a 13 pulgadas, pardo amarillento oscuro (10YR 4/4) areno-ar-
cilloso 16mico; estructura bloque subangular, debil: gruesa:
consisteneia bien firme, levemente pegajoso. plastic: pre-
sencia de raicillas, comunes: finas concreciones ferreas. al-
gunas; cementado fuertemente; bien fuertemente acido: lim-
ite claro liso.
B21t-13 a 18 pulgadas, pardo-amarillento oscuro (10YR 4/4) limo
arcilloso 16mico; con algunas manchas. medianas. palidas de
color pardo-amarillento (10YR 5/6); estructura bloque suban-
gular, moderada, gruesa: consistencia bien firme. levemente
pegajoso, plistico; presencia de raicillas. algunas: mosaicos
recubiertos con finas peliculas laminares de arcillas: finas
concreciones f6rreas, algunas; cementado fuertemente: bien
fuertemente Acido; limited claro liso.
B22t-18 a 37 pulgadas, pardo-amarillento (10YR 5/6) limo arcilloso:
peds revestidos de color pardo-amarillento oscuro (10YR 4/
4); estructura bloque subangular moderada median: consis-
tencia bien firme, pegajoso, plistico: presencia de raicillas.
algunas; concreciones f6rreas comunes, finas y medianas:
cementado fuertemente; mosaicos recubiertos con finas peli-
culas laminares de arcillas: bien fuertemente acido: limited
abrupto ondulante.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


B3-37 to 60 inches +, strong-brown (7.5YR 5/6) silty clay loam;
common, fine, distinct mottles of red (2.5YR 4/6) and pinkish
gray (7.5YR 7/2); weak, fine, subangular blocky structure
very firm, sticky and plastic; sand grains are coated and
bridged with clay; weakly cemented; common fine iron con-
cretions; very strongly acid.

The Ap horizon ranges from sandy loam to sandy clay loam in tex-
ture. The A horizon has a hue of 10YR and 7.5YR, a value of 4 and 5,
and a chroma of 3 and 4. The B2t horizon has a hue of 7.5YR and
10YR, a value of 4 to 6, and a chroma of 6 to 8. It ranges from clay
loam to silty clay loam or silty clay in texture and from weak, coarse
subangular blocky to moderate, coarse and medium, subangular
blocky in structure. The thin clay films in this horizon range from
patchy to discontinuous. The B3 horizon ranges from silty clay loam to
sandy clay loam and sandy clay in texture. It has red and gray mottles
that range from few to common in abundance and from fine to medium
in size.

Bejucos sandy clay loam, 2 to 5 percent slopes(BcB).-This
soil is in small valleys on the Coastal Plains. It has a profile
similar to the one described as representative of the series,
but the surface layer is sandy clay loam instead of sandy
loam. The available water capacity is moderate, and fertility
is medium. Erosion is a moderate hazard.

Included in mapping were some very small areas of Beju-
cos sandy loam and Coto clay. These areas make up 5 per-
cent or less of the acreage.
This soil is suited to cultivated crops, and nearly the en-
tire acreage is in sugarcane. The soil is easily worked. Sup-
plementary irrigation is generally needed because of the
poor distribution of rainfall. Careful soil management is
needed to control erosion and, in areas used for clean-tilled
crops, to prevent deterioration of the soil. (Capability unit
IIe- 1; not in a woodland group)

Bejucos sandy loam, 2 to 5 percent slopes(BeB).-This soil
is on the Coastal Plains. It has the profile described as repre-
sentative of the series. The available water capacity is low
because the surface layer is moderately coarse textured.
Fertility is low. Erosion is a moderate hazard.

Included in mapping were areas of Coto clay and Jobos
sandy clay loam. These areas make up 10 percent or less of
the acreage.
This soil is suited to cultivated crops. Most of the acreage
is in pasture and subsistence crops, but a few acres are in
sugarcane. The soil is easily worked. During long periods of
drought, the vegetation is damaged by lack of moisture, and
supplementary irrigation by sprinkler is necessary. Erosion
hazard, available water capacity, and fertility are limita-
tions. The choice of crops is limited, and special manage-
ment practices are needed. (Capability unit IIIs-5; not in a
woodland group)


Cabo Rojo Series
The Cabo Rojo series consists of deep, moderately well
drained, gently sloping to sloping soils that are strongly acid
and moderately permeable. The soils are on low hills and
foot slopes. They formed in Coastal Plain materials. The
slope ranges from 2 to 12 percent. The climate is subhumid.
Rainfall amounts to 50 to 65 inches, and the annual tempera-
ture ranges from 770 to 790 F.


B3-37 a 60 pulgadas +, pardo fuerte (7.5YR 5/6) limo arcilloso 16mi-
co; con manchas comunes-finas-precisas, color rojo (2.5YR
4/6) y manchas comunes-finas-precisas de color gris rosado
(7.5YR 7/2); estructura bloque subangular, d6bil, fina; consis-
tencia bien firme, pegajoso, plAstico; los granulos de arena
estin recubiertos y pegados entire si con arcilla, cementado
d6bilmente; finas concreciones f6rreas, algunas; bien fuerte-
mente Acido.
El horizonte Ap varia desde arenoso-16mico a areno-arcilloso-16mi-
co en textura. El horizonte A tiene matices de 10YR y 7.5YR, valores
de 4 y 5, y cromas de 3 y 4. El horizonte B2t tiene matices de 7.5YR y
10YR, valores de 4 a 6 y cromas de 6 a 8.. Varia desde arcilloso 16mico
a limo arcilloso-16mico o limo arcilloso en textura. La estructura es
subangular en bloques y varia desde d6bil-gruesa hasta moderada-
gruesa a median. Las peliculas de arcilla varian entire mosaicos finos
y fina interrumpida. El horizonte B3 varia desde limo-arcilloso-16mico
a areno-arcilloso-16mico y areno-arcilloso en textura. Tiene manchas
rojas y grises que varian desde pocas a comunes en abundancia y
desde finas a medianas en tamafo.

Bejucos arenoso arcilloso 16mico, 2 a 5 porciento de declive
(BcB).-Este suelo esta en valles pequeios en los llanos
costaneros. Tiene un perfil similar al descrito como repre-
sentativo de la series, pero la capa superficial es areno-arcil-
loso 16mica en vez de areno-16mica. La capacidad de reten-
ci6n de agua asequible es moderada, la fertilidad es medi-
ana. La erosi6n es un peligro moderado.
Se incluyen algunas areas muy pequefias de Bejucos aren-
oso 16mico y Coto arcilloso. Estas areas comprenden el 5
porciento o menos del cuerdaje.
Este suelo se presta para cosechas de cultivo limpio, y
casi todo el cuerdaje esta en caiia de az6car. El suelo es de
ficil laboreo. Riego suplementario se necesita generalmente
por la pobre distribuci6n de la lluvia. Se necesita un manejo
cuidadoso del suelo para controlar la erosi6n, y en areas
donde se usa para cosechas de cultivo limpio, prevenir el
deterioro del suelo. (Unidad de capacidad IIe-11; no esta en
un grupo de bosques)
Bejucos arenoso 16mico, 2 a 5 porciento de declive (BeB).-
Este suelo esta en los llanos costaneros. Tiene el perfil des-
crito como representative de la series. La capacidad de re-
tenci6n de agua es baja, porque la capa superficial tiene una
textura moderadamente gruesa. La fertilidad es baja. La
erosi6n es un peligro moderado.
Se incluyen areas de Coto arcilloso y de Jobos arenoso
arcilloso 16mico. Estas areas comprenden el 10 porciento, o
menos del cuerdaje total.
Este suelo se presta para cosechas de cultivo limpio. La
mayor parte del cuerdaje esta en pastos y en cosechas de
subsistencia, pero algunos acres estan en caiia de azicar. El
suelo es de ffcil laboreo. Durante periods prolongados de
sequia, la vegetaci6n se perjudica por la falta de humedad, y
se hace necesario usar riego suplementario. El peligro de
erosi6n, la capacidad de retenci6n de agua, y la fertilidad
son limitaciones. La selecci6n de cosechas es limitada, y se
requieren practices especiales de manejo. (Unidad de capa-
cidad IIIs-5; no esta en un grupo de bosques).

Serie Cabo Rojo
La series Cabo Rojo consiste de suelos profundos, moder-
adamente bien desaguados, suavemente inclinados a incli-
nados que son fuertemente Acidos y moderamente permea-
bles. Los suelos estan en montes bajos y en faldas. Se han
formado en materials de los llanos costaneros. El declive
varia desde 2 a 12 porciento. El clima es sub-hfimedo. La
lluvia alcanza de 50 a 65 pulgadas y la temperature annual
varia desde 770 hasta 79' F.






SOIL SURVEY


In a representative profile the surface layer is dark-
brown, strongly acid, clay about 8 inches thick. In this layer
fragments of volcanic rock 1/4 to 3 inches in diameter are
common. The upper part of the subsoil is strong-brown,
strongly acid, firm, sticky and plastic clay that has common
fine mottles of red and brown. The lower part is a thick layer
of strongly acid, firm, sticky and plastic clay variegated with
pale green, greenish gray, and brown. This layer has distinct
mottles of reddish yellow and red. Partly weathered, sub-
rounded fragments of volcanic rock are common in this lay-
er.


Most of the acreage has been in sugarcane for a long time.
Small areas are in subsistence crops and native pasture.

Representative profile of Cabo Rojo clay, 2 to 12 percent
slopes, 3.2 kilometers northwest of the town of Cabo Rojo,
1.2 kilometers southwest of kilometer marker 17.1 on High-
way No. 102.
Ap-0 to 8 inches, dark-brown (7.5YR 3/2) clay mixed with a few,
strong-brown particles (7.5YR 5/6) from the B horizon; weak,
medium, subangular blocky structure parting to moderate,
medium, granular; firm, sticky and plastic; many fine roots;
common, hard, angular volcanic-rock fragments 1/4 to 3 inch-
es in diameter; strongly acid; clear, smooth boundary.
B21t-8 to 18 inches, strong-brown (7.5YR 5/6) clay; common, fine,
distinct mottles of red (2.5YR 4/6); brown (7.5YR 4/4) coat-
ings on exterior of peds; moderate, fine, subangular blocky
structure; firm, sticky and plastic; common fine roots; thin
continuous clay films; strongly acid; clear, smooth boundary.
B22t-18 to 26 inches, strong-brown (7.5YR 5/6) clay; few, fine, dis-
tinct mottles of greenish gray (5G 6/1) and red (2.5YR 4/6);
thin coatings of dark brown (7.5YR 4/4); weak, fine subangu-
lar blocky structure; firm, sticky and plastic; few fine roots;
thin patchy clay films; strongly acid; gradual, smooth bound-
ary.
B3-26 to 60 inches +, clay that is variegated pale green (5G 6/2),
greenish gray (5GY 6/1), and brown (7.5YR 4/4): distinct mot-
tles of reddish yellow and red; moderate, coarse, subangular
blocky structure; firm, sticky and plastic; common, partly
weathered, subrounded volcanic rock fragments 1/4 to 3
inches in diameter; strongly acid.

The low-chroma colors in the lower part of the B horizon are a char-
acteristic of the parent material and do not indicate restricted drain-
age. Reaction ranges from strongly acid to very strongly acid. The A
horizon has a hue of 7.5YR to 10YR, a value of 3, and a chroma of 2
and 3. Generally, the B horizon has mottles that range from few to
common in abundance and that are in shades of red, brown, and gray.
The B3 horizon is variegated in varying proportions of brown, red,
gray, pale green, and yellow. The B2t horizon ranges from moderate,
fine and medium, subangular blocky to weak, fine to coarse, subangu-
lar blocky in structure. The thin clay films in this horizon range from
continuous to patchy.
Cabo Rojo clay, 2 to 12 percent slopes (CaC).-This soil is
on hills and foot slopes. It has the profile described as repre-
sentative of the series. Runoff is medium, and erosion is a
hazard. The available water capacity is moderate, and fertil-
ity is medium.
Included in mapping were some areas where many rock
fragments are on the surface. These areas make up 3 per-
cent or less of the acreage.


En un perfil representative la capa superficial es pardo-
oscura, fuertemente icida, arcillosa, alrededor de 8 pulga-
das de espesor. En esta capa fragments de roca volcanica
desde 1/4 de pulgadas a 3 pulgadas de diametro son co-
munes. La parte superior del subsuelo es pardo fuerte,
fuertemente acida, firme, pegajosa y plastica, arcillosa y
que tiene manchas comunes y finas color rojo y pardo. La
parte inferior es una capa gruesa fuertemente icida, firme,
pegajosa y plistica, arcillosa, veteada con colors verde
claro, gris verdoso, y pardo. Esta capa tiene manchas preci-
sas color amarillo rojizo y rojo. Fragmentos de roca volcan-
ica parcialmente meteorizados y redondeados son comunes
en esta capa.
Una gran parte del cuerdaje ha estado en caria de az6car
por largo tiempo. Areas pequefias estin en cosechas para
uso en la finca, y en pastes natives.
Perfil representative de Cabo Rojo arcilloso, 2 a 12 por-
ciento de declive, 3.2 kil6metros al noroeste del pueblo de
Cabo Rojo, 1.2 kil6metros at suroeste del marcador de kilo-
metros 17.1 en la carretera no. 102.
Ap-0 a 8 pulgadas, pardo oscuro (7.5YR 3/2) mezclado con particular
pardo fuerte (7.5YR 5/6) procedentes del horizonte B: arcillo-
so; estructura bloque subangular. debil-mediana. que rompe
en granular moderada median; consistencia firme. pegajoso.
plAstico; presencia de raicillas, abundantes; fragments co-
munes de roca volcanica que varian en diametro entire 1/4 y 3
pulgadas; fuertemente fcido; limited claro liso.
B21t-8 a 18 pulgadas, pardo fuerte (7.5YR 5/6) arcilloso: con man-
chas comunes-finas-precisas, de color rojo (2.5YR 416) y re-
vestimiento color pardo (7.5YR 4/4) de los peds: estructura
bloque subangular moderada fina; consistencia fire. pega-
josa, plastica; presencia de raicillas, comunes: peliculas fi-
nas-continuas de arcilla; fuertemente acido: limited claro liso.
B22t-18 a 26 pulgadas, pardo fuerte (7.5YR 5/6) arcilloso. con algun-
as manchas finas-precisas color gris-verdosas (5G 611). color
rojo (2.5YR 4/6) y revestimientos color pardo-oscuro (7.5YR
4/4); estructura bloque subangular d6bil fina: consistencia
firme, pegajosa, plastica; presencia de raicillas, algunas:
mosaicos recubiertos con peliculas die arcilla: fuertemente
acidos, limited gradual liso.
B3-26 a 60 pulgadas +, veteado en diversos colors como verde pali-
do (5G 6/2), gris-verdoso (5GY 6/1). pardo (7.5YR 4/4): con
manchas precisas, color amarillo-rojizas y rojas: textura ar-
cillosa; estructura bloque subangular moderada gruesa: con-
sistencia firme, pegajosa, plistica; presencia comun de frag-
mentos redondeados de roca volcanica. parcialmente meteo-
rizada, de 1/4 a 3 pulgadas de diametro; fuertemente icido.
La parte inferior del horizonte B tiene colors de cromas bajas que
son caracteristicas del material padre y que no indican desagiie restric-
to. La reacci6n varia desde fuertemente icida a muy fuertemente aci-
da. El horizonte A tiene matices de 7.5YR a 10YR. valores de 3 y cro-
mas de 2 y 3. Generalmente, el horizonte B tiene manchas que varian
desde pocas a comunes en abundancia, y que son en tonos de rojo.
pardo y gris. El horizonte B3 estA veteado con colors pardo, rojo.
gris, verde claro y amarillo. La estructura del horizonte B2t es suban-
gular en bloques y varia desde moderada fina y median a debil fina a
gruesa. Las peliculas de arcilla del horizonte B2t varian entire finas
continues y finas descontinuas.
Cabo Rojo arcilloso, 2 a 12 porciento de declive (CaC).-
Este suelo esta en los montes y en las faldas. Tiene el perfil
descrito como representative de la series. El escurrimiento
es median, y la erosion es un peligro. La capacidad de re-
tenci6n de agua es moderada, y la fertilidad es median.
Se incluyen algunas dreas donde hay muchos fragments
de roca en la superficie. Estas areas comprenden el 3 por-
ciento o menos del area total.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


This soil is suited to cultivated crops. A large acreage is in
sugarcane, and some areas are in pasture and subsistence
crops. The soil is not easily worked. Runoff, past erosion,
erosion hazard, workability and depth to unfertile Coastal
Plain materials are limitations. The choice of plants is re-
stricted and special management practices are needed in
areas used for clean-tilled crops. (Capability unit IIIe-5; not
in a woodland group)

Cabo Rojo clay, 2 to 12 percent slopes, eroded (CaC2).-
This soil occurs on hilltops. It has a profile similar to the one
described as representative of the series but the surface lay-
er is thinner. This soil has been affected by erosion more
than Cabo Rojo clay, 2 to 12 percent slopes. It has a surface
layer of dark-brown clay 4 to 6 inches thick and a subsoil of
strong-brown mottled, sticky and plastic clay. Erosion is a
hazard.

Included in mapping were severely eroded areas where
the subsoil is exposed. These areas make up 2 percent or
less of the acreage.
This soil is suited to cultivated crops, and most of the
acreage is in sugarcane. The hazard of erosion, past ero-
sion, poor workability, and depth to Coastal Plain materials
are limitations. Special management practices are neces-
sary. Special care should be taken to avoid deep plowing
because of the shallowness to Coastal Plain material, which
is less fertile and harder to work. (Capability unit IIIe-5; not
in a woodland group)



Caguabo Series
The Caguabo series consists of shallow, well-drained
soils that are slightly acid and moderately permeable. These
soils formed in very gravelly residuum weathered from ba-
sic volcanic rocks. The slope ranges from 20 to 60 percent.
The climate is humid. Rainfall amounts to 70 to 90 inches,
and the annual temperature ranges from 72 to 790 F

In a representative profile the surface layer is dark gray-
ish-brown, slightly acid clay loam about 4 inches thick. Fine
fragments of volcanic rock are common in this layer. The
subsoil is brown, slightly acid, friable, slightly sticky and
slightly plastic gravelly clay loam to a depth of about 10
inches. Volcanic rock fragments make up 60 percent, by
volume, of this layer. The substratum is a thin layer of
weathered and partly weathered fragments of volcanic rock
and is underlain by consolidated volcanic rock.

Most of the acreage is in brushy pasture, because of the
slope.
Representative profile of Caguabo clay loam, 20 to 60 per-
cent slopes, eroded, 2.4 kilometers northwest of the town of
Anasco, 90 meters north of the intersection of Highway No.
2 and Highway No. 110.
Ap-0 to 4 inches, dark grayish-brown (10YR 4/2) clay loam; weak,
fine, granular structure; slightly hard, friable, slightly sticky
and slightly plastic: common, fine, volcanic rock fragments;
common fine roots; slightly acid; clear, smooth boundary.


Este suelo se presta para cosechas de cultivo limpio. Una
parte considerable del cuerdaje esti en calfa de az6car, y
algunas areas estin en pastos y en cosechas para uso de la
finca. El suelo no es de ficil laboreo. El escurrimiento, la
erosion pasada, el peligro de erosi6n, el dificil laboreo y la
poca profundidad a los inf6rtiles materials de los llanos
costaneros son todas limitaciones. La selecci6n de plants
es restrict y pricticas de manejo especiales son requeridas
en areas que se usan para cosechas de cultivo limpio. (Uni-
dad de capacidad IIIe-5; no esti en un grupo de bosques)
Cabo Rojo arcilloso, 2 a 12 porciento de declive, erodado
(CaC2).-Este suelo esta en las cumbres. Tiene un perfil
similar al descrito como representative de la series, pero la
capa superficial es mis delgada. La erosi6n ha afectado mis
a este suelo que al Cabo Rojo arcilloso, 2 a 12 porciento de
declive. Tiene una capa superficial color parda obscura, ar-
cillosa, de 4 a 6 pulgadas de espesor y un subsuelo color
pardo-fuerte, manchado, pegajoso, plistico, de textura ar-
cillosa. La erosi6n es un peligro.
Se incluyen areas que estin erodadas severamente donde
el subsuelo esti expuesto. Estas inclusiones comprenden el
2 porciento o menos del area total.
Este suelo se presta para cosechas de cultivo limpio, y la
mayor parte del cuerdaje esti en cafia de aztcar. El peligro
de erosi6n, la erosi6n pasada, el laboreo dificil y la poca
profundidad a los inf6rtiles materials de los llanos costane-
ros son limitaciones para su uso. Se requieren pricticas
especiales de manejo. Debe tenerse un cuidado especial de
evitar el arado profundo debido a la poca profundidad del
material de los llanos costaneros, que es mis infertil y de un
laboreo mis dificil. (Unidad de capacidad IIIe-5; no esti en
un grupo de bosques)

Serie Caguabo
La series Caguabo consiste de suelos poco profundos, de
buen desagiie que son ligeramente icidos y moderadamente
permeables. Estos suelos se han formado de un residue muy
gravoso de rocas volcinicas basicas. Los declives varian
desde 20 a 60 porciento. El clima es himedo. La lluvia al-
canza de 70 a 90 pulgadas y la temperature annual varia desde
72 hasta 790 F.
En un perfil representative la capa superficial es pardo-
grisaceo oscura, ligeramente Acida, arcilloso-16mica, de al-
rededor de 4 pulgadas de espesor. Fragmentos finos de roca
volcinica son comunes en esta capa. El subsuelo es pardo,
ligeramente acido, friable, ligeramente pegajoso y ligera-
mente plistico, arcilloso-16mico gravoso a una profundidad
de alrededor de 10 pulgadas. El 60 porciento por volume de
esta capa consiste de fragments de roca volcinica. El sub-
strato es una capa fina de fragments meteorizados y par-
cialmente meteorizados de roca volcinica y bajo esta fina
capa esta la roca volcinica consolidada.
La mayor parte del cuerdaje esti en pastos brefiosos, de-
bido al declive.
Perfil representative de Caguabo arcilloso 16mico, 20 a 60
porciento de declive, erodado, 2.4 kil6metros al noroeste
del pueblo de Afasco, 90 metros al norte de la intersecci6n
de las carreteras 2 y 110.
Ap-0 a 4 pulgadas, pardo-grisaceo-oscuro (10YR 4/2) arcilloso 16mi-
co; estructura granular debil fina; consistencia en seco, leve-
mente dura, consistencia en h6medo, friable, levemente pe-
gajoso, levemente plastico; presencia de fragments finos de
roca volcanica, comunes; presencia de raicillas, comunes;
levemente acido; limited claro liso.






SOIL SURVEY


B2-4 to 10 inches, brown (10YR 4/3) gravelly clay loam; weak, fine,
subangular blocky structure parting to weak fine granular;
friable, slightly sticky and slightly plastic; many, fine and
medium, volcanic rock fragments that make up 60 percent,
by volume, of soil mass; few fine roots; slightly acid; clear,
smooth boundary.
C-10 to 16 inches, mixture of weathered and partly weathered vol-
canic rock fragments that can be penetrated with a spade.
R-16 inches +, consolidated volcanic rock.
The solum ranges from 6 to 12 inches in thickness. Depth to consoli-
dated volcanic rock varies from 8 to 20 inches. Fragments of volcanic
rock in the B and C horizons make up more than 50 percent of the soil
mass, by volume. The A horizon has a hue of 10YR and 2.5Y, a value
of 4, and a chroma of 2 or 3. The weak subangular blocky structure in
the B horizon ranges from fine to medium in class. The B horizon has a
hue of 10YR and 2.5Y, a value of 4, and a chroma of 2 or 3.

Caguabo clay loam, 20 to 60 percent slopes, eroded (CbF2).
-This soil is on strongly dissected sides and tops of ridges.
Runoff is rapid, and erosion is a hazard.

Included in mapping were some areas of Mucara clay,
Anones clay loam, Quebrada silty clay, and outcrops of
volcanic rock. These areas make up 15 percent or less of the
acreage.
This soil is not suited to cultivated crops. Its use is re-
stricted mainly to grazing or wildlife habitat. Slope, runoff,
past erosion, hazard of further erosion, and shallowness to
bedrock are limitations. The improvement of the pasture by
such practices as seeding, fertilizing, and using water con-
trol systems is not practical because of such characteristics
as slope and shallowness to bedrock. If this soil is used for
grazing, the stocking rate should be controlled so that ero-
sion is controlled and adjacent areas are not damaged.
(Capability unit VIIs-6; woodland groups 2dl, 2d2, 2d3,
3dl)


Camaguey Series
The Camaguey series consists of deep, somewhat poorly
drained soils that are moderately alkaline and slowly perme-
able. These soils are in inner valleys and on foot slopes of
the limestone hills. They formed in fine textured materials
washed from the surrounding limestone hills. The slope
ranges from 2 to 5 percent. Gilgai relief is common in pas-
tures, and slickensides are close enough to intersect. The
climate is humid. Rainfall amounts to 70 to 90 inches, and
annual temperature ranges from 76 to 790 F.


In a representative profile the surface layer is thick,
black, moderately alkaline clay about 14 inches thick. The
next layer, to a depth of about 24 inches is dark grayish-
brown calcareous, very firm, sticky and plastic clay that has
common yellowish brown mottles. Below this is olive-yel-
low, calcareous, very firm, sticky and plastic clay that has
many gray and grayish-brown mottles.


Most of the acreage is in native pasture, especially St.
Augustine grass.
Representative profile of Camaguey clay, 2 to 5 percent
slopes, 1.6 kilometers west of the town of Moca, 6 meters
north of kilometer marker 3.9 of Highway No. 111.


B2-4 a 10 pulgadas, pardo (10YR 4/3) cascajo arcilloso 16mico; es-
tructura bloque subangular debil final rompi6ndose en granu-
lar debil-fina; consistencia friable, levemente pegajosa, leve-
mente plistica; muchos fragments de roca volcanica entire
finos y medianos que alcanzan el 60 porciento por volume;
presencia de raicillas, algunas; levemente Acido; limited claro
liso.
C-10 a 16 pulgadas, mezcla de fragments de roca volcanica entire
meteorizados y parcialmente meteorizados, susceptible de
penetrar con la pala.
R-16 pulgadas +, roca volcinica consolidada.
El solum varia desde 6 a 12 pulgadas en grosor. La profundidad a la
roca volcanica consolidada varia desde 8 hasta 20 pulgadas. Los frag-
mentos de roca volcanica en los horizontes B y C alcanzan a mis de 50
porciento del suelo por volume. El horizonte A tiene matices de
10YR and 2.5Y, valor de 4 y cromas de 2 y 3. La estructura subangular
en bloques debil del horizonte B varia desde final a median en clase. El
horizonte B tiene matices de 10YR y 2.5Y, valor de 4, y cromas de 2 y
3.
Caguabo arcilloso 16mico, 20 a 60 porciento de declive, ero-
dado (CbF2).-Este suelo esti en laderas y cumbres muy
fuertemente bisectadas. El escurrimiento es ripido, y la
erosion es un peligro.
Se incluyen algunas areas de Mticara arcilloso, Anones
arcilloso l6mico, Quebrada limoso arcilloso, y afloraciones
de roca volcanica. Estas areas alcanzan al 15 porciento o
menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esta restrict mayormente a pastoreo o habitat de
vida silvestre. El declive, el escurrimiento, erosi6n pasada,
el peligro de future erosi6n, y la poca profundidad a la roca
son limitaciones. No es practice el mejoramiento de estos
pastos con practices tales como la siembra, abonamiento y
el uso de sistema de control de agua, debido a caracteristi-
cas tales como el declive y la poca profundidad a la roca. Si
se usare este suelo para pastoreo, se debe limitar la cantidad
de animals de manera que se control la erosi6n y las areas
adyacentes no se perjudiquen. (Unidad de capacidad VIIs-
6; grupo de bosques 2d1, 2d2, 2d3, 3dl)

Serie Camaguey
La series Camaguey consiste de suelos profundos, de de-
sagiie algo pobre, que son moderadamente alcalinos y lenta-
mente permeables. Estos suelos estin en valles interiores y
en las faldas de los montes calizos. Se han formado en mate-
riales de textura fina que han sido lavados de los montes cal-
izos adyacentes. Los declives varian desde 2 a 5 porciento.
El micro-relieve gilgai es com6n en estos suelos, y los plan-
os de resbalamiento estan tan cerca unos de otros que se
intersectan. El clima es h6medo. La lluvia alcanza a 70 has-
ta 90 pulgadas, y la temperature annual varia desde 760 hasta
790 F.
En un perfil representative la capa superficial es gruesa,
negra, fuertemente alcalina, arcillosa y alrededor de 14 pul-
gadas de espesor. La siguiente capa, a una profundidad de
alrededor de 24 pulgadas es pardo grisacea oscura, calcarea,
muy firme, pegajosa y plistica, arcillosa y tiene manchas
comunes de color pardo amarilloso. Bajo esta capa hay otra
color amarillo oliva, calcirea, muy firme, pegajosa y plisti-
ca, arcillosa que tiene muchas manchas gris y pardo grisa-
ceo.
La mayor parte del cuerdaje esti en pastos natives, espe-
cialmente yerba San Agustin.
Perfil representative de Camaguey arcilloso, 2 a 5 por-
ciento de declive, 1.6 kil6metros al oeste del pueblo de
Moca, 6 metros al norte del marcador de kilometros 3.9, de
la carretera No. 111.







MAYAGUEZ AREA OF WESTERN PUERTO RICO


Ap-0 to 14 inches, black (10YR 2/1) clay; weak, coarse, subangular
blocky structure; firm, sticky and plastic; few fine roots;
common fine and few medium volcanic-rock fragments;
moderately alkaline; clear, smooth boundary.
Cl-14 to 24 inches, dark grayish-brown (2.5YR 4/2) clay; common,
fine, distinct mottles of light yellowish brown (2.5Y 6/4);
massive; very firm, sticky and plastic; few fine roots; few fine
shell fragments; slickensides that intersect; strong efferves-
cence; clear, wavy boundary.

C2-24 to 34 inches, olive-yellow (2.5Y 6/6) clay; many medium, dis-
tinct mottles of dark grayish brown (2.5Y 4/2); crushed color
is olive brown (2.5Y 4/4); massive; very firm, sticky and plas-
tic; few fine roots; few fine shell fragments; slickensides that
intersect; violent effervescence; clear, wavy boundary.

C3-34 to 50 inches +, olive-yellow (2.5Y 6/6) clay; many, medium,
distinct mottles of gray (10YR 5/1); crushed color is olive
brown (2.5Y 5/4); massive; very firm, sticky and plastic;
slickensides that intersect; violent effervescence.

The A horizon ranges from 12 to 16 inches in thickness and from
mildly alkaline to strongly alkaline. It has a hue of 10YR, a value of 2
and 3, and a chroma of less than 1.5. The C horizon has colors in
shades of brown and yellow and distinct, light yellowish-brown and
yellow mottles that range from common to many in abundance. Effer-
vescence with dilute hydrochloric acid in the C horizon ranges from
slight to violent.
Camaguey clay, 2 to 5 percent slopes (CcB).-This soil is
on foot slopes and in inner valleys between the limestone
hills. It is fertile, but it is subject to waterlogging. It is plas-
tic and sticky when wet. Permeability is slow, and the avail-
able water capacity is high.

Included in mapping were small areas of Naranjo clay and
Limestone outcrop. These areas make up 5 percent or less
of the acreage.
This soil is suited to cultivated crops. It is used for sugar-
cane and pasture. This soil is not easily worked. Permeabili-
ty, consistence when wet, poor workability, waterlogging,
and high expansibility are limitations. Very careful manage-
ment is needed in cultivated areas to improve tilth. Special
care should be taken if the soil is used for pasture. Careful
management of grazing is needed during rainy weather to
prevent trampling. (Capability unit IIw-4; woodland group
lo5)


Catano Series
The Catano series consists of deep, excessively drained,
nearly level soils that are calcareous and rapidly permeable.
These soils occur along the coast in areas that are close to
sea level but above high tide. They formed in sandy material
consisting of shell fragments, quartz grains, and subround-
ed fragments of volcanic rock. The climate is subhumid to
humid. Rainfall amounts to 55 to 80 inches, and the temper-
ature ranges from 760 to 790 F.

In a representative profile the surface layer is light-gray
and very dark brown, calcareous sand about 4 inches thick.
The next layer, to a depth of about 10 inches, is dark-brown,
calcareous, loose, nonsticky and nonplastic sand. Underly-
ing this are layers of brown and grayish-brown, calcareous,
loose, nonsticky and nonplastic sand.


Ap-0 a 14 pulgadas, negro (10YR 2/1) arcilloso; estructura bloque
subangular debil gruesa; consistencia firme, pegajosa, plisti-
ca; presencia de raicillas, algunas; presencia de fragments
de roca volcanica entire comunes-finos y algunos medianos;
moderadamente alcalino; limited claro liso.
C1-14 a 24 pulgadas, pardo-grisaceo oscuro (2.5YR 4/2) arcilloso
con manchas comunes, finas, precisas, pardo-amarillentas
claras (2.5Y 6/4); estructura macisa; consistencia bien firme,
pegajosa, plistica; presencia de raicillas, pocas; presencia de
fragments de conchas de caracol, algunas finas; presencia
de pianos de resbalamiento entrecortados; efervescencia
fuerte; limited claro ondulante.
C2-24 a 34 pulgadas, amarillo-oliva (2.5Y 6/6) arcilloso; con muchas
manchas medianas precisas color pardo-grisaceas-oscuras
(2.5YR 4/2); color mezclado pardo-oliva (2.5Y 4/4); estruc-
tura macisa; consistencia bien firm, pegajosa, plastica; pre-
sencia de raicillas, algunas; presencia de conchas de cara-
coles, algunas; presencia de pianos de resbalamiento entre-
cortados; efervescencia violent; limited claro ondulante.
C3-34 a 50 pulgadas +, amarillo-oliva (2.5Y 6/6) arcilloso; con mu-
chas manchas medianas, precisas, color gris (10YR 5/1), col-
or mezclado pardo-oliva (2.5Y 5/4) estructura macisa; con-
sistencia bien firme, pegajosa, plastica; presencia de pianos
de resbalamiento entrecortados; efervescencia intense.
El horizonte A varia desde 12 hasta 16 pulgadas en espesor, y desde
ligeramente alcalino a fuertemente alcalino en reacci6n. Tiene matiz
de 10YR, valores de 2 y 3, y cromas de menos de 1.5. El horizonte C
tiene colors en tonos de pardo y amarillo, y manchas que son preci-
sas, pardo-amarillosas y amarillas, que varian desde comunes hasta
muchas en abundancia. La efervescencia con acido chloridrico diluido
en el horizonte C varia desde ligera hasta violent.
Camaguey arcilloso, 2 a 5 porciento de declive (CcB).-
Este suelo esta en las faldas y en los valles interiores entire
los montes calizos. Es fertil, pero esti sujeto a encharca-
miento. Cuando esta huimedo es plistico y pegajoso. La
permeabilidad es lenta y la capacidad de retenci6n de agua
es alta.
Se incluyen areas pequefias de Naranjo arcilloso y aflora-
ciones de roca caliza. Estas areas comprenden el 5 porcien-
to o menos del cuerdaje.
Este suelo se presta para cosechas de cultivo limpio. Se
usa para caiia de azucar y para pastos. Este suelo no es de
facil laboreo. Permeabilidad, consistencia cuando htimedo,
dificultad en el laboreo, encharcamiento, y alta expansibili-
dad de las arcillas son limitaciones. Se require un manejo
muy cuidadoso cuando el suelo se cultiva para mejorar su
condici6n fisica. Se debe tener un cuidado especial cuando
este suelo se usa para pastoreo. Durante la epoca de lluvia
es necesario un manejo cuidadoso para evitar el pisoteo.
(Unidad de capacidad IIw-4; grupo de bosques lo5)

Serie Catano
La series Catafio consiste de suelos profundos de desagiie
excesivo, casi Ilanos, que son calcireos y de una permeabil-
idad ripida. Estos suelos ocurren a lo largo de las costas en
areas que estin cerca del mar, pero que no son cubiertos por
la marea alta. Se han formado en materials arenosos que
consistent de fragments de caracoles, granos de cuarzo, y
fragments redondeados de roca volcanica. El clima es
subhimedo y h6medo. La lluvia alcanza de 55 a 80 pulgadas
y la temperature varia desde 760 a 790 F.
En un perfil representative la capa superficial es gris clara
y pardo muy oscura, de textura arenosa, calcarea, y de alre-
dedor de 4 pulgadas de espesor. La pr6xima capa, hasta una
profundidad de 10 pulgadas, es pardo oscura, calcArea, suel-
ta, no pegajosa y no plastica, de textura arenosa. Bajo estan
capas calcAreas, sueltas, no pegajosas y no plAsticas y de
textura arenosa.






SOIL SURVEY


Most of the acreage is in coconuts, but in some areas
there is an undergrowth of native pasture plants.
Representative profile of Catano sand, 3.2 kilometers
north of the city of Mayaguez, 800 meters on dirt road north
of Boquilla Bridge, 90 meters west of dirt road.

AI-0 to 4 inches, light-gray (1OYR 7/2) sand, sand-size shell frag-
ments, very dark brown (10YR 2/2) subrounded grains of
quartz, and volcanic rock fragments coated with organic mat-
ter; very dark grayish brown (10YR 3/2) overall; single
grained; loose, nonsticky and nonplastic; many fine roots;
strong effervescence; clear, smooth boundary.
AC-4 to 10 inches, sand that is dark brown (10YR 3/3) overall; light-
gray (10YR 7/2) shell fragments and very dark brown (10YR
2/2) volcanic-rock fragments; single grained; loose, nonsticky
and nonplastic; common fine roots; strong effervescence;
clear, smooth boundary.
CI-10 to 50 inches, sand that is brown (10YR 4/3) overall; light-gray
(10YR 7/2) shell fragments and very dark brown (10YR 2/2)
subrounded volcanic-rock fragments; single grained; loose,
nonsticky and nonplastic, few fine roots; strong efferves-
cence; clear, smooth boundary.
C2-50 to 60 inches +, sand that is grayish brown (10YR 5/2) overall;
single grained; loose, nonsticky and nonplastic; very few fine
roots; strong effervescence.

Silt and clay make up 4 to 10 percent of the Cl horizon. The A and
AC horizons have overall colors in a hue of 10YR and a value and a
chroma of 2 to 3. The C horizon has a hue of 10YR, a value of 4 and 5,
and a chroma of 2 and 3. Effervescence with dilute hydrochloric acid
ranges from slight to violent.
Catano sand (Cd).-This soil is nearly level. It occurs as
strips along the coast in areas close to sea level. It has the
profile described as representative of the series. Permeabili-
ty is rapid, the available water capacity is low, and fertility
is low.
Included in mapping were areas of Espinal sand, Corcega
silty clay loam, Talante loam, and Coastal beach. These
areas make up 15 percent or less of the acreage.
This soil is not suited to cultivated crops. Its use is limited
mainly to pasture, coconuts, or wildlife habitat. It is mainly
in coconuts and in most places has an undergrowth of native
pasture plants or low-growing brush. Some areas are used
for residential sites and for recreational purposes. Available
water capacity, permeability, and fertility are severe limita-
tions. (Capability unit VIs-3; not in a woodland group)


Catano sandy clay loam (Ce).-This soil is nearly level. It
is in areas that are slightly farther from the beach than Ca-
tano sand. It has a profile similar to the one described as
representative of the series, but the surface layer is sandy
clay loam instead of sand and is lighter colored. It has slight-
ly higher available water capacity and is better suited to
crops. It has a surface layer of grayish brown, calcareous
sandy clay loam about 5 to 7 inches thick and is underlain by
lighter colored, calcareous sand that is several feet thick.
The available water capacity is moderate in the thin surface
layer, and during long periods of drought, plants are dam-
aged by the lack of moisture. Fertility is medium.


Included in mapping were some spots of Coloso silty clay
loam.


La mayor parte del cuerdaje esta sembrada de cocos,
pero en algunas areas hay una cubierta de pastos natives.
Perfil representative de Catafio arenoso, 3.2 kil6metros
al norte de la ciudad de Mayaguez, 800 metros en un camino
de tierra, al norte del puente de La Boquilla, 90 metros al
oeste de este camino de tierra.
Al-0 a 4 pulgadas, gris claro (10YR 7/2), fragments de concha ta-
maio arena repartido con granos redondeados de cuarzo col-
or pardo bien oscuro (10YR 2/2) y fragments de roca volcin-
ica revestidos con material organica; color predominante es
pardo-gris bien oscuro (10YR 3/2); estructura de grano suel-
to; consistencia no pegajosa, no plastica; presencia de raicil-
las, muchas; efervescencia, fuerte; limited claro liso.
AC-4 a 10 pulgadas, pardo oscuro predominante (10YR 3/3) arenoso
compuesto de fragments de concha color gris claro (10YR 7/
2) y fragments de roca volcanica color pardo bien oscuro
(10YR 2/2); estructura de grano suelto; consistencia no pega-
josa, no plistica; presencia de raicillas, comunes; eferves-
cencia, fuerte; limited claro liso.
Cl-10 a 50 pulgadas, pardo predominante (10YR 4/3) arenoso com-
puesto de fragments de concha color gris claro (10YR 7/2) y
fragments redondeados, color pardo bien oscuro (10YR 2/2)
de roca volcinica; estructura de grano suelto; consistencia no
pegajosa, no plistica; presencia de raicillas, algunas; eferves-
cencia fuerte; limited claro liso.
C2-50 a 60 pulgadas +, pardo grisiceo (10YR 5/2) predominante
arenoso; estructura de grano suelto; consistencia no pegajos-
a, no plhstica; presencia de raicillas, muy pocas; efervescen-
cia fuerte.
El limo y la arcilla alcanzan del 4 al 10 porciento del horizonte Cl.
Los horizontes A y AC tienen colors predominantes con matiz de
10YR y valor y cromas de 2 y 3. El horizonte C tiene matiz de 10YR,
valor de 4 y 5, y cromas de 2 y 3. La efervescencia con icido chlorodri-
co diluido varia desde leve hasta violent.
Catafio arenoso (Cd).-Este suelo es casi Ilano. Ocurre en
franjas a lo largo de la costa, en areas cercanas al mar.
Tiene el perfil descrito como representative de la series. La
permeabilidad es ripida, la capacidad de retenci6n de agua
es baja, y la fertilidad es baja.
Se incluyen areas de Espinal arenoso, Corcega limo arcil-
loso 16mico, Talante 16mico, y Playa costanera. Estas areas
alcanzan al 15 porciento o menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esta limitado mayormente a pastos, cocos, y como
habitat de vida silvestre. Este suelo esti mayormente en
cocos y en algunos sitios tiene pastos nativos o pastos brefi-
osos. Algunas areas se usan como sitios residenciales y con
prop6sitos de recreaci6n. La capacidad de retencion de
agua, la permeabilidad, y la fertilidad son limitaciones sev-
eras. (Unidad de capacidad VIs-3; no esti en un grupo de
bosques)
Catanio arenoso arcilloso lomico (Ce).-Este suelo es casi
Ilano. Esti en areas que estin un poco mis retiradas de la
playa que Catafio arenoso. Tiene un perfil similar al descrito
como representative de la series, pero la capa superficial es
arenoso arcilloso 16mica, en vez de arenosa, y su color es
mis claro. Su capacidad de retenci6n de agua es un poco mas
alta y se presta mejor para cosechas. Tiene una capa super-
ficial pardo grisicea, calcirea, de textura areno arcilloso
16mica de alrededor de 5 a 7 pulgadas de espesor. Bajo esta
capa hay otra capa de color mis claro, calcarea, de textura
arenosa y que tiene un espesor de various pies. La capacidad
de retenci6n de agua es moderada en la superficie, pero dur-
ante largos periods de sequia, las plants se perjudican por
la falta de humedad. La fertilidad es median.
Se incluyen algunas areas pequefias de Coloso limo arcil-
loso l6mico.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


This soil is suited to cultivated crops, and most of the
acreage is in sugarcane. The soil is easily worked. Shallow-
ness to underlying sand is the main limitation. Careful man-
agement is needed, and special care should be taken when
plowing to avoid bringing nonfertile sand to the surface.
(Capability unit IVs-18; not in a woodland group)


Cidral Series
The Cidral series consists of deep, well-drained soils that
are very strongly acid and extremely acid and moderately
permeable. These soils are in interior valleys. They formed
in sediments washed from the adjacent volcanic and lime-
stone hills. The slope ranges from 2 to 12 percent. The cli-
mate is humid. Rainfall amounts.to 80 to 90 inches, and the
annual temperature ranges from 760 to 790 F.

In a representative profile the surface layer is dark yel-
lowish-brown, very strongly acid clay about 8 inches thick.
The subsoil extends to a depth of about 40 inches. The up-
per part is extremely acid, firm, slightly sticky and plastic
clay that is variegated with yellowish brown, red, and
brownish yellow. The lower part is extremely acid, friable,
slightly sticky and plastic, yellow loam.



These soils are in sugarcane and native pasture.
Representative profile of Cidral clay, 2 to 12 percent
slopes, eroded, 6.4 kilometers west of the town of Lares,
150 meters north of kilometer marker 31.9 on Highway No.
111.
Ap-0 to 8 inches, dark yellowish-brown (10YR 4/4) clay; weak, medi-
um, subangular blocky structure; firm, slightly sticky and
plastic; few fine roots; slight earthworm activity; very
strongly acid; abrupt, smooth boundary.
B21t-8 to 15 inches, mixed yellowish-brown (10YR 5/6) and red
(2.5YR 4/6) clay; ped surfaces coated with dark yellowish
brown (10YR 4/4); strong brown (7.5YR 5/6) crushed; moder-
ate, medium, subangular blocky structure; firm, slightly
sticky and plastic; thin discontinuous clay films; few fine
roots; extremely acid; gradual, smooth boundary.

B22t-15 to 21 inches, clay that has mixed colors of red (2.5YR 4/6)
and yellowish brown (10YR 5/6 to 5/4); yellowish red (5YR
5/6) crushed; moderate, fine and medium, subangular blocky
structure; firm, slightly sticky and plastic; common, thin,
patchy clay films, few fine roots; extremely acid; clear, wavy
boundary.
B23t-21 to 29 inches, clay that has mixed colors of red (2.5YR 4/6),
brownish yellow (10YR 6/6), and light yellowish brown
(10YR 6/4); few, fine, faint mottles of gray (10YR 7/1), strong
brown (7.5 YR 5/8) crushed; moderate, fine and medium,
subangular blocky structure; slightly sticky and plastic;
common, thin, patchy clay films, few fine roots; extremely
acid; clear, wavy boundary.
B31-29 to 40 inches, brownish-yellow (10YR 6/8) clay; few, fine,
prominent mottles of red (2.5YR 5/6); weak, medium, suban-
gular structure; friable, slightly sticky and plastic; few, thin
patchy clay films; few fine roots; extremely acid; clear,
smooth boundary.
B32-40 to 75 inches +, yellow (10YR 7/8) loam; few, fine, faint mot-
tles of yellowish red (5YR 5/6), and common fine distinct
mottles of strong brown (7.5YR 5/6); weak, coarse, subangu-
lar blocky structure; friable, slightly sticky and plastic; thin
patchy clay films; extremely acid.


Este suelo se presta para cosechas de cultivo limpio, y la
mayor parte del cuerdaje esta en cafia de az6car. El suelo es
de ficil laboreo. La poca profunidad a la arena subyacente
es la mayor limitaci6n. Se require un manejo cuidadoso, y
se debe evitar traer a la superficie la arena del subsuelo
cuando se are. (Unidad de capacidad IVs-18; no esti en un
grupo de bosques.)

Serie Cidral
La series Cidral consiste de suelos profundos, de buen
desagtie, que son muy fuertemente acidos a extremada-
mente acidos, y moderadamente permeables. Estos suelos
estan en los valles interiores. Se han formado en sedimentos
que han sido lavados desde los montes volcinicos y calizos
adyacentes. El declive varia desde 2 hasta 12 porciento. El
clima es htimedo. La lluvia alcanza de 80 hasta 90 pulgadas,
y la temperature annual varia desde 760 hasta 790 F.
En un perfil representative la capa superficial es pardo
amarillosa oscura, muy fuertemente icida de textura arcillo-
sa, y de alrededor de 8 pulgadas de espesor. El subsuelo se
extiende hasta una profundidad de 40 pulgadas. La parte
superior del subsuelo es extremadamente acida, firme, leve-
mente pegajosa y plistica, de textura arcillosa y que tiene
colors veteados que incluyen pardo amarilloso, rojo, y
amarillo pardo. La parte inferior del subsuelo es extremada-
mente acida, friable, levemente pegajosa y plstica, de col-
or amarillo y de textura 16mica.
Estos suelos estin en cafia de azficar y pastos natives.
Perfil representative de Cidral arcilloso, 2 a 12 porciento
de declive, erodado, 6.4 kil6metros al oeste del pueblo de
Lares, 150 metros al norte del marcador de kil6metros 31.9
de la carretera no. 111.
Ap-0 a 8 pulgadas, pardo-amarillento oscuro (10YR 4/4) arcilloso;
estructura bloque subangular d6bil median; consistencia
firme, levemente pegajosa, plastica; presencia de raicillas,
algunas; actividad de los gusanos de la tierra, ligera; bien
fuertemente icido; limited abrupto liso.
B21t-8 a 15 pulgadas, colors mixtos, pardo-amarillento (10YR 5/6) y
rojo (2.5YR 4/6) arcilloso, con revestimiento color pardo-
amarillento oscuro (10YR 4/4) en la superficie de los peds;
color dominant pardo fuerte (7.5YR 5/6); estructura bloque
subangular moderado-mediana; consistencia firme, leve-
mente pegajoso, plastica; peliculas tenues y descontinuas de
arcillas; presencia de raicillas, algunas; extremadamente aci-
do; limited gradual liso.
B22t-15 a 21 pulgadas, colors mixtos, rojo (2.5YR 4/6), pardo amar-
illento (10YR 5/6 a 5/4) y dominant, es rojo amarillento (5YR
5/6); arcilloso; estructura bloque subangular moderadafina y
median; consistencia firme, levemente pegajoso, plistico;
mosaicos recubiertos de peliculas tenues de arcilla; comunes;
presencia de raicillas, algunas; extremadamente Acido; limited
claro ondulante.
B23t-21 a 29 pulgadas, colors mixtos, rojo (2.5YR 4/6), pardo amar-
illento (10YR 6/6), pardo amarillento claro (10YR 6/4) y algun-
as inanchas finas gris (10YR 7/1) color dominant, pardo
fuerte (7.5YR 5/8) arcilloso; estructura bloque subangular
moderada fina y median; consistencia levemente pegajosa,
plAstica; presencia de mosaicos tenues recubiertos de pelicu-
las de arcilla, comunes; presencia de raicillas, algunas; extre-
madamente acido; limited claro ondulante.
B31-29 a 40 pulgadas, pardo-amarillo (10YR 6/8) arcilloso con algun-
as manchas rojas (2.5YR 5/6), finas-prominentes; estructura
bloque subangular d6bil median; consistencia friable, leve-
mente pegajosa, plastica; presencia de mosaicos tenues de
peliculas de arcilla, algunos; presencia de raicillas, algunas;
extremadamente acido; limited claro liso.
B32-40 a 75 pulgadas +, amarillo (10YR 7/8) 16mico; con algunas
manchas finas, color rojo amarillento (5YR 5/6) y otras co-
munes y finas color pardo fu-e:, t/.5YR 5/6); estructura
bloque subangular d6bil gruesa; consistencia friable, leve-
mente pegajosa, plistica; presencia de mosaicos tenues de
peliculas de arcillas; extremadamente acido.






SOIL SURVEY


The A horizon has a hue of 7.5YR to IOYR, a value of 4, and a chro-
ma of 4 to 6. The B2t horizon has mixed colors in a hue of IOYR,
7.5YR, or 2.5YR and a value and a chroma of 4, 5, and 6. In the lower
part of the B horizon, yellow colors are dominant and have mainly a
chroma of 6 or more. The B3 horizon ranges from loam to clay in
texture.
Cidral clay, 2 to 12 percent slopes, eroded (CfC2).-This
soil is in valleys between the limestone hills. The available
water capacity is high, and fertility is medium. Erosion is a
hazard.
Included in mapping were areas of Juncal clay and Moca
clay. These areas make up 10 percent or less of the acreage.

This soil is suited to cultivated crops. A large acreage is in
sugarcane, but some areas are in native pasture. The soil is
somewhat difficult to work. Slope, past erosion, and hazard
of further erosion are limitations. Special management prac-
tices are needed in areas used for clean-tilled crops so that
deterioration of the soil is avoided. Crops respond well to
lime and fertilizer. (Capability unit IIIe-21; not in a wood-
land group)



Coastal Beach
Coastal beach (Ch) consists of narrow strips of light-col-
ored beach sands along the coast. It occupies nearly level
sand ridges and dunes caused by the action of waves on
marine sands. The depth to salt water is variable. The
sands, which are calcareous, contain numerous seashells,
corals, and shell fragments throughout.

Most areas lack vegetation, but in some areas there are
scattered coconut palms. The most common vegetation
consists of common seagrape(Coccolobis uvifera) and
beach morning-glory (Ipomoea pescaprae). Some areas are
covered with logs, fallen palm trees, and seaweed that has
been deposited by the sea waves. (Capability unit VIIIs-1;
not in a woodland group)

Colinas Series
The Colinas series consists of well-drained soils that are
calcareous and moderately permeable. These soils are mod-
erately deep to soft limestone. They formed in residual ma-
terial weathered from soft limestone. The slope ranges from
12 to 60 percent. The climate is subhumid to humid. Rainfall
amounts to 60 to 90 inches, and the annual temperature
ranges from 760 to 790 F.

In a representative profile the surface layer is dark-
brown, calcareous, clay loam about 6 inches thick. This lay-
er contains a few fine limestone fragments. The subsoil, to a
depth of about 16 inches, is dark grayish-brown and pale-
brown, calcareous, friable, slightly sticky and plastic clay
loam that contains common fine and medium limestone frag-
ments. The substratum, to a depth of more than 5 feet, is a
mixture of soft yellow and white limestone and common
fine and medium limestone fragments.


A large acreage is in native pasture and brush, but a small
acreage is in sugarcane and subsistence crops.


El horizonte A tiene matices de 7.5YR a 10YR, valor de 4. y cromas
de 4 hasta 6. El horizonte B2t tiene colors mixtos con matices de
IOYR, 7.5YR, 2.5YR, y valores y cromas de 4, 5, y 6. En la parte infe-
rior del horizonte B, los colors amarillosos son dominantes y tienen
mayormente cromas de 6 o mas. La textura del horizonte B3 varia
desde 16mica hasta arcillosa.

Cidral arcilloso, 2 a 12 porciento de declive, erodado (Cf-
C2).-Este suelo esta en valle entire los montes calizos. La
capacidad de retenci6n de agua es alta, y la fertilidad es
median. La erosi6n es un peligro.
Se incluyen areas de Juncal arcilloso y de Moca arcilloso.
Estas areas alcanzan hasta el 10 porciento o menos del cuer-
daje total.
El suelo se presta para cosechas de cultivo limpio. Una
parte considerable del cuerdaje esti en caila de azfcar, pero
tambien hay areas en pastos natives. Este suelo es de bas-
tante dificil laboreo. El declive, la erosi6n pasada, y el peli-
gro de erosi6n future son limitaciones. Se requieren prfcti-
cas especiales de manejo en areas que son usadas para cose-
chas de cultivo limpio, de manera que no se deteriore el sue-
lo. Las cosechas responded bien a la aplicaci6n de cal y
abonos. (Unidad de capacidad IIIe-21; no esti en un grupo
de bosques)

Playa Costanera
Playa costanera (Ch) consiste de franjas estrechas de are-
nas de playa a lo largo de las costas. Estas arenas ocupan
terrenos casi llanos, con algunas escarpas arenosas y dunas
formadas por el batir de las olas sobre la playa. La profundi-
dad al agua salada es variable. Las arenas, que son calcir-
eas, contienen numerosos fragments de caracoles, corales
y conchas.
La mayor parte de las areas no tiene vegetaci6n, pero en
algunas otras areas hay palmas de cocos dispersas. La uva
player (Coccolobis uvifera) y el bejuco de playa (Ipomoea
pescaprae) son las plants mas comunes que poblan el area
de esta unidad. Algunas areas estin cubiertas de troncos,
palmas caidas y zargasos depositados por las olas. (Unidad
de capacidad VIIIs- 1; no esti en un grupo de bosques)

Serie Colinas
La series Colinas consiste de suelos de buen desagiie que
son calcireos y moderadamente permeables. Estos suelos
son moderadamente profundos a la roca caliza blanda. Se
han formado en materials residuales meteorizados de la
roca caliza blanda. El declive varia desde 12 hasta 60 por-
ciento. El clima es subhtmedo a himedo. La lluvia varia
desde 60 hasta 90 pulgadas y la temperature annual varia
desde 760 hasta 79 F.
En un perfil representative la capa superficial es pardo
oscura, calcArea, de textura arcilloso 16mica, de alrededor
de 6 pulgadas de espesor. Esta capa contiene algunos frag-
mentos finos de roca caliza. El subsuelo, hasta una profun-
didad de 16 pulgadas, es pardo grisiceo oscuro y pardo pili-
do, calcireo, friable, ligeramente pegajoso y plistico, de
textura arcilloso 16mica que contiene algunos fragments
finos y medianos de roca caliza. El substrato, hasta una pro-
fundidad de mis de 5 pies, es una mezcla de roca caliza
amarilla y blanca que tiene fragments comunes, finos y
medianos de roca caliza.
Una gran parte del cuerdaje esti en pastos natives y en
brefales, pero areas pequefias estan en cania de azicar y en
cosechas para el uso de la finca.






SOIL SURVEY


The A horizon has a hue of 7.5YR to IOYR, a value of 4, and a chro-
ma of 4 to 6. The B2t horizon has mixed colors in a hue of IOYR,
7.5YR, or 2.5YR and a value and a chroma of 4, 5, and 6. In the lower
part of the B horizon, yellow colors are dominant and have mainly a
chroma of 6 or more. The B3 horizon ranges from loam to clay in
texture.
Cidral clay, 2 to 12 percent slopes, eroded (CfC2).-This
soil is in valleys between the limestone hills. The available
water capacity is high, and fertility is medium. Erosion is a
hazard.
Included in mapping were areas of Juncal clay and Moca
clay. These areas make up 10 percent or less of the acreage.

This soil is suited to cultivated crops. A large acreage is in
sugarcane, but some areas are in native pasture. The soil is
somewhat difficult to work. Slope, past erosion, and hazard
of further erosion are limitations. Special management prac-
tices are needed in areas used for clean-tilled crops so that
deterioration of the soil is avoided. Crops respond well to
lime and fertilizer. (Capability unit IIIe-21; not in a wood-
land group)



Coastal Beach
Coastal beach (Ch) consists of narrow strips of light-col-
ored beach sands along the coast. It occupies nearly level
sand ridges and dunes caused by the action of waves on
marine sands. The depth to salt water is variable. The
sands, which are calcareous, contain numerous seashells,
corals, and shell fragments throughout.

Most areas lack vegetation, but in some areas there are
scattered coconut palms. The most common vegetation
consists of common seagrape(Coccolobis uvifera) and
beach morning-glory (Ipomoea pescaprae). Some areas are
covered with logs, fallen palm trees, and seaweed that has
been deposited by the sea waves. (Capability unit VIIIs-1;
not in a woodland group)

Colinas Series
The Colinas series consists of well-drained soils that are
calcareous and moderately permeable. These soils are mod-
erately deep to soft limestone. They formed in residual ma-
terial weathered from soft limestone. The slope ranges from
12 to 60 percent. The climate is subhumid to humid. Rainfall
amounts to 60 to 90 inches, and the annual temperature
ranges from 760 to 790 F.

In a representative profile the surface layer is dark-
brown, calcareous, clay loam about 6 inches thick. This lay-
er contains a few fine limestone fragments. The subsoil, to a
depth of about 16 inches, is dark grayish-brown and pale-
brown, calcareous, friable, slightly sticky and plastic clay
loam that contains common fine and medium limestone frag-
ments. The substratum, to a depth of more than 5 feet, is a
mixture of soft yellow and white limestone and common
fine and medium limestone fragments.


A large acreage is in native pasture and brush, but a small
acreage is in sugarcane and subsistence crops.


El horizonte A tiene matices de 7.5YR a 10YR, valor de 4. y cromas
de 4 hasta 6. El horizonte B2t tiene colors mixtos con matices de
IOYR, 7.5YR, 2.5YR, y valores y cromas de 4, 5, y 6. En la parte infe-
rior del horizonte B, los colors amarillosos son dominantes y tienen
mayormente cromas de 6 o mas. La textura del horizonte B3 varia
desde 16mica hasta arcillosa.

Cidral arcilloso, 2 a 12 porciento de declive, erodado (Cf-
C2).-Este suelo esta en valle entire los montes calizos. La
capacidad de retenci6n de agua es alta, y la fertilidad es
median. La erosi6n es un peligro.
Se incluyen areas de Juncal arcilloso y de Moca arcilloso.
Estas areas alcanzan hasta el 10 porciento o menos del cuer-
daje total.
El suelo se presta para cosechas de cultivo limpio. Una
parte considerable del cuerdaje esti en caila de azfcar, pero
tambien hay areas en pastos natives. Este suelo es de bas-
tante dificil laboreo. El declive, la erosi6n pasada, y el peli-
gro de erosi6n future son limitaciones. Se requieren prfcti-
cas especiales de manejo en areas que son usadas para cose-
chas de cultivo limpio, de manera que no se deteriore el sue-
lo. Las cosechas responded bien a la aplicaci6n de cal y
abonos. (Unidad de capacidad IIIe-21; no esti en un grupo
de bosques)

Playa Costanera
Playa costanera (Ch) consiste de franjas estrechas de are-
nas de playa a lo largo de las costas. Estas arenas ocupan
terrenos casi llanos, con algunas escarpas arenosas y dunas
formadas por el batir de las olas sobre la playa. La profundi-
dad al agua salada es variable. Las arenas, que son calcir-
eas, contienen numerosos fragments de caracoles, corales
y conchas.
La mayor parte de las areas no tiene vegetaci6n, pero en
algunas otras areas hay palmas de cocos dispersas. La uva
player (Coccolobis uvifera) y el bejuco de playa (Ipomoea
pescaprae) son las plants mas comunes que poblan el area
de esta unidad. Algunas areas estin cubiertas de troncos,
palmas caidas y zargasos depositados por las olas. (Unidad
de capacidad VIIIs- 1; no esti en un grupo de bosques)

Serie Colinas
La series Colinas consiste de suelos de buen desagiie que
son calcireos y moderadamente permeables. Estos suelos
son moderadamente profundos a la roca caliza blanda. Se
han formado en materials residuales meteorizados de la
roca caliza blanda. El declive varia desde 12 hasta 60 por-
ciento. El clima es subhtmedo a himedo. La lluvia varia
desde 60 hasta 90 pulgadas y la temperature annual varia
desde 760 hasta 79 F.
En un perfil representative la capa superficial es pardo
oscura, calcArea, de textura arcilloso 16mica, de alrededor
de 6 pulgadas de espesor. Esta capa contiene algunos frag-
mentos finos de roca caliza. El subsuelo, hasta una profun-
didad de 16 pulgadas, es pardo grisiceo oscuro y pardo pili-
do, calcireo, friable, ligeramente pegajoso y plistico, de
textura arcilloso 16mica que contiene algunos fragments
finos y medianos de roca caliza. El substrato, hasta una pro-
fundidad de mis de 5 pies, es una mezcla de roca caliza
amarilla y blanca que tiene fragments comunes, finos y
medianos de roca caliza.
Una gran parte del cuerdaje esti en pastos natives y en
brefales, pero areas pequefias estan en cania de azicar y en
cosechas para el uso de la finca.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


Representative profile of Colinas clay loam, 20 to 40 per-
cent slopes, 5.6 kilometers east of the town of Moca, 900
meters on dirt road north of kilometer marker 9.65 on High-
way No. 111, 9 meters west of dirt road.

Ap-0 to 6 inches, clay loam that is dark brown (IOYR 3/3) moist and
grayish brown (IOYR 5/2) dry; moderate, fine, granular struc-
ture: slightly hard, friable, slightly sticky and slightly plastic:
many fine roots: few fine limestone fragments: violent effer-
vescence; clear, smooth boundary.
B2-6 to 12 inches, dark grayish-brown (IOYR 4/2) clay loam; few
fine, light yellowish-brown (2.5Y 6/4) worm casts: weak,
medium, subangular blocky structure parting to weak, fine,
subangular blocky: slightly hard, friable, slightly sticky and
slightly plastic; many fine roots: common fine and medium
limestone fragments: violent effervescence: gradual, smooth
boundary.
B3--12 to 16 inches, pale-brown (IOYR 6/3) clay loam; weak, medium.
subangular blocky structure: stringers of material from the
B2 horizon along fracture plains: friable, nonsticky and
slightly plastic: few fine roots; common fine and medium
limestone fragments: strong effervescence: gradual, smooth
boundary.
Cl-16 to 20 inches, light yellowish-brown (IOYR 6/4) clay loam: dark-
colored coatings along root channels: massive; friable,
nonsticky and slightly plastic: common fine and medium lime-
stone fragments; few fine roots: violent effervescence: grad-
ual, wavy boundary.
C2-20 to 60 inches +, mixture of yellow and white soft limestone
containing common fine and medium limestone fragments
and concretions.
The solum ranges from 12 to 24 inches in thickness, and the depth of
soft limestone ranges from 20 to 30 inches. The limestone fragments
throughout the profile range from few to common in number and from
fine to medium in size. The A horizon has a hue of IOYR, a value of 3.
and a chroma of 2 and 3 when moist. The B horizon has a hue of IOYR,
a value of 4 to 6, and a chroma of 2 and higher. Effervescence with
hydrochloric acid ranges from strong to violent.

Colinas clay loam, 12 to 20 percent slopes (CID).-This soil
is on foot slopes and side slopes of low rounded limestone
hills. It has a profile similar to the one described as repre-
sentative of the series, but the surface layer is slightly thick-
er. This soil has been less affected by erosion than Colinas
clay loam, 20 to 40 percent slopes. It has a surface layer of
dark-brown clay loam 8 to 10 inches thick and a lighter co-
lored sticky subsoil. Erosion is a hazard.


Included in mapping were small areas of Naranjo clay and
Limestone outcrop. These areas make up 5 percent or less
of the acreage.
This soil is not suited to cultivated crops. Its use is limited
to grazing or pasture. Slope, past erosion, hazard of further
erosion, and shallowness to soft limestone are severe limita-
tions. The improvement of pasture by such practices as
seeding, fertilizing, and using ditches and diversions is
practical. Ditches and diversions are more easily laid out,
established, and maintained in this soil than in the other
soils of this series because this soil is not so steep. If the soil
is used for grazing, it is necessary to control the stocking
rate so that the soil is protected and damage to adjoining
areas is prevented. (Capability unit VIe-30; woodland group
Idl)
Colinas clay loam, 20 to 40 percent slopes (CIE).-This soil
is on the side slopes and ridgetops of limestone hills. It has
the profile described as representative of the series. Runoff
is rapid, and erosion is a hazard.


Perfil representative de Colinas arcilloso 16mico, 20 a 40
porciento de declive, 5.6 kil6metros al este del pueblo de
Moca, 900 metros en un camino de tierra al norte del marca-
dor de kil6metros 9.65 de la carretera no. 11l, y 9 metros al
oeste de este camino de tierra.
Ap-0 a 6 pulgadas, pardo oscuro (IOYR 3/3), en humedo y pardo
grisaceo (10YR 5/2) en seco; arcilloso 16mico; estructura
granular moderada fina; consistencia levemente dura, friable,
levemente pegajoso, levemente plistico; presencia de raici-
Ilas, muchas; algunos fragments finos de roca caliza; efer-
vescencia violent; limited claro liso.
B2-6 a 12 pulgadas, pardo grisaceo oscuro (IOYR 4/2) arcilloso 16mi-
co; algunas excreciones finas, color pardo-amarillento claras
(2.5Y 6/4) de gusanos de la tierra; estructura subangular
bloque d6bil-mediano repartida con d6bil fina; consistencia
levemente dura; friable, levemente pegajosa, levemente
plistica; presencia de raicillas, muchas; presencia com6n de
fragments finos y medianos de roca caliza; efervescencia
violent; limited gradual liso.
B3-12 a 16 pulgadas, pardo amarillento (10YR 6/3) arcilloso 16mico;
estructura bloque subangular d6bil median con hebras del
B2 extendidas por los pianos de fractures; consistencia fria-
ble, no pegajosa, levemente plistica; presencia de raicillas,
algunas; presencia com6n de fragments finos y medianos de
roca caliza; efervescencia fuerte; limited gradual liso.
Cl-16 a 20 pulgadas, pardo amarillento claro (IOYR 6/4) arcilloso
16mico; con revestimiento oscuro que cubre los huecos de
races; estructura macisa; consistencia friable, no pegajosa,
levemente plastica; presencia comun de fragments finos y
medianos de roca caliza; presencia de raicillas, algunas; efer-
vescencia violent; limited gradual ondulante.
C2-20 a 60 pulgadas +, mezcla de rocas calizas blandas, amarillas y
blancas que contienen comunes fragments finos de roca cali-
za y concreciones.
El solum varia desde 12 hasta 24 pulgadas en espesor, y la profundi-
dad a la roca caliza blanda varia desde 20 hasta 30 pulgadas. Los frag-
mentos de roca caliza a traves del perfil varian desde pocos hasta co-
munes en n6mero y desde finos hasta medianos en tamafio. El hori-
zonte A tiene matices de IOYR, valor de 3, y cromas de 2 y 3 cuando
esta h6medo. El horizonte B tiene matices de IOYR, valor de 4 a 6, y
cromas de 2 y mas. La efervescencia con acido chlorohidrico varia
desde fuerte hasta violent.
Colinas arcilloso 16mico, 12 a 20 porciento de declive
(CID).--Este suelo esta en las faldas y en las laderas de los
montes calizos. Tiene un perfil similar al descrito como re-
presentativo para la series, pero la capa superficial es ligera-
mente mas gruesa. Este suelo no ha sido tan afectado por la
erosion como Colinas arcilloso 16mico, 20 a 40 porciento de
declive. Tiene una capa superficial pardo oscura, de textura
arcilloso 16mica, de 8 a 10 pulgadas de espesor, y un subsue-
lo que tiene un color un poco mas claro. La erosi6n es un
peligro.
Se incluyen areas pequefias de Naranjo arcilloso y de
afloraciones de roca caliza. Estas areas alcanzan al 5 por-
ciento o menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esta limitado a pastoreo. El declive, la erosion pasa-
da, el peligro de erosion en el future, y la poca profundidad
a la roca caliza blanda son limitaciones several. El mejora-
miento de pastos por practices tales como siembra, abona-
miento y el uso de zanjas de desviaci6n es prActico. Es mis
facil establecer y mantener zanjas de desagiie y zanjas de
desviaci6n en esta unidad que en otras unidades de la series.
Si el suelo se usa para pastoreo, es necesario controlar el
numero de animals para proteger el suelo y para evitar per-
juicios a las Areas adyacentes. (Unidad de capacidad VIe-
30; grupo de bosques Id1)
Colinas arcilloso o1mico, 20 a 40 porciento de declive
(CIE).--Este suelo esta en las laderas y las cumbres de los
montes calizos. Tiene el perfil descrito como representative
de la series. El escurrimiento es rApido y la erosion es un pe-
ligro.






SOIL SURVEY


Included in mapping were some areas of Naranjo clay and
Limestone outcrop. These areas make up 10 percent or less
of the acreage.
This soil is not suited to cultivated crops. The use of this
soil is limited to pasture, woodland, or wildlife habitat. It is
mainly in pasture that has low carrying capacity, but there
are some areas in brush. The slope, runoff, and past ero-
sion, the hazard of further erosion, and the shallowness to
soft limestone are severe limitations. The condition of this
soil is such that the improvement of pasture, if needed, can
be done by such practices as fertilizing, seeding, and con-
trolling water. If the soil is used for grazing, it is necessary
to control the stocking rate so that damage to adjoining
areas is prevented. (Capability unit VIe-30; woodland group
Idl)
Colinas clay loam, 20 to 60 percent slopes, eroded (CIF2).
-This soil is on side slopes and ridgetops of the limestone
hills. It has a profile similar to the one described as repre-
sentative of the series, but the surface layer and subsoil are
thinner. It has been affected more by erosion than Colinas
clay loam, 20 to 40 percent slopes. This soil has a surface
layer of dark-brown clay loam, a thin light-colored subsoil,
and a very thick substratum of soft limestone. The surface
layer consists chiefly of material from the original subsoil
because of the erosion. Runoff is rapid, and erosion is a
hazard.

Included in mapping were areas where soft limestone is
exposed on the surface and small spots of Limestone out-
crop, especially on hilltops. These areas make up 15 percent
or less of the acreage.
This soil is not suitable for cultivation. It is mainly in
brush and native pasture that has low carrying capacity. Its
use is restricted mainly to grazing, woodland, or wildlife
habitat. Slope, runoff, past erosion, hazard of further ero-
sion, and shallowness to soft limestone are severe limita-
tions. The improvement of pasture by such practices as
seeding, fertilizing, and controlling water with contour fur-
rows, ditches, or diversions is not practical. If the soil is
used for grazing, it is necessary to control the stocking rate
so that the soil is protected and damage to adjoining areas is
prevented. (Capability unit VIIe-9; woodland group Idl)
Colinas cobbly clay loam, 12 to 20 percent slopes (CmD).-
This soil is on foot slopes, side slopes, and especially on
rounded hilltops throughout the limestone area. It has a
profile similar to the one described as representative of the
series, but throughout the profile are rounded or partly
rounded fragments of limestone ranging from 3 to 10 inches
in diameter. The surface layer consists of 6 to 8 inches of
dark-brown or dark yellowish-brown clay loam. Scattered
limestone cobblestones cover 20 to 50 percent of the sur-
face.

This soil is not suited to cultivated crops. Its use is limited
to grazing or pasture. Slope, past erosion, hazard of ero-
sion, shallowness to soft limestone, and large number of
cobblestones are limitations. Ditches and diversions are
difficult to lay out and to establish because of the large num-
ber of cobblestones. If the soil is used for grazing, care
should be taken to avoid overgrazing the pasture so that the
soil is protected. (Capability unit VIe-30; woodland group
Idl)


Se incluyen algunas areas de Naranjo arcilloso y de aflor-
aciones de calizas. Estas areas alcanzan el 10 porciento o
menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
El uso de este suelo se limita a pastes, bosques o habitat de
vida silvestre. Esti mayormente en pastes de bajo rendi-
miento, pero hay algunas areas que estin en brefiales. El
declive, el escurrimiento, la erosi6n pasada, el peligro de
erosi6n future, y la poca profundidad a la roca caliza blanda
son limitaciones several. La condici6n de este suelo es tal
que el mejoramiento de pastes, si fuera necesario, puede
hacerse a trav6s de pricticas tales como abonamiento, siem-
bra, y controlando el agua. Si el suelo se usara para pasto-
reo, se hace necesario controlar el nimero de animals de
manera que no se perjudiquen las areas adyacentes. (Uni-
dad de capacidad VIe-30; grupo de bosques Idl)
Colinas arcilloso 16mico, 20 a 60 porciento de declive, ero-
dado (C1F2).-Este suelo esta en las laderas y en las
cumbres de los montes calizos. Tiene un perfil similar al
descrito como representative de la series, pero la capa super-
ficial y el subsuelo son mis delgados. La erosi6n lo ha afec-
tado mis que a Colinas arcilloso 16mico, 20 a 40 porciento
de declive. Este suelo tiene una capa superficial pardo os-
cura, de textura arcillosa 16mica, un subsuelo delgado de
color claro, y un substrato muy grueso de roca caliza blan-
da. La capa superficial consiste mayormente de materials
del subsuelo original debido a la erosi6n. El escurrimiento
es ripido, y la erosi6n es un peligro.
Se incluyen areas donde la roca caliza blanda esti expues-
ta en la superficie y tambi6n pequefias areas de afloraciones
calizas, especialmente en las cumbres. Estas areas alcanzan
el 15 porciento o menos del cuerdaje total.
Este suelo no se presta para cultivo. Esti mayormente en
brefiales y en pastos natives de baja productividad. Su uso
esti restrict mayormente a pastoreo, a bosques, o habitat
de vida silvestre. El declive, el escurrimiento, la erosi6n
pasada, el peligro de erosi6n future, la poca profundidad a
la roca caliza son limitaciones several. No es prictico el
mejoramiento de pastes con practices tales como siembra,
abonamiento, y el control de agua. Si el suello se usara para
pastoreo, se hace necesario controlar el nimero de animals
de manera que se proteja el suelo y se evite el perjuicio a
areas adyacentes. (Unidad de capacidad VIIe-9; grupo de
bosques Idl)
Colinas guijarroso arcilloso 16mico, 12 a 20 porciento de
declive (CmD).-Este suelo esti en las faldas, laderas y es-
pecialmente en las cumbres redondeadas a traves de toda el
area caliza. Tiene un perfil similar al descrito como repre-
sentativo de la series, pero tiene a travis die todo el perfil
fragments redondeados o parcialmente redondeados de
roca caliza que varian en diametro desde 3 hasta 10 pulga-
das. La capa superficial consiste de 6 a 8 pulgadas de color
pardo oscuro o pardo amarilloso oscuro, de textura arcillosa
S16mica. En la superficie estan distribuidos guijarros calizos
que comprenden del 20 al 50 porciento de la superficie.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esti limitado al pastoreo. El declive, la erosion pasa-
da, el peligro de erosi6n future, la poca profundidad a la
roca caliza blanda, y la gran cantidad de guijarros son limi-
taciones. Es dificil establecer zanjas de desagiie y zanjas de
desviaci6n debido al gran n6mero de guijarros. Si este suelo
fuere usado para pastoreo, es precise protejerlo evitando el
sobre pastoreo. (Unidad de capacidad Vie-30: grupo de
bosques Idl)






MAYAGUEZ AREA OF WESTERN PUERTO RICO


Colinas cobbly clay loam, 20 to 40 percent slopes (CmE).-
This soil is on side slopes and ridgetops of the limestone
hills. It has a profile similar to the one described as repre-
sentative of the series, but the surface layer contains many
rounded or partly rounded limestone fragments. The frag-
ments range from 3 to 10 inches in diameter. They occupy
20 to 50 percent of the surface area. Runoff is rapid, and
erosion is a hazard.

Included in mapping were areas of Limestone outcrop.
These areas make up 5 percent or less of the acreage.
This soil is not suited to cultivated crops. Its use is limited
to grazing, woodland, and wildlife habitat. Slope, runoff,
past erosion, hazard of erosion, and the large number of
cobblestones on the surface are limitations. The improve-
ment of pasture by such practices as fertilizing, seeding,
and controlling water with contour furrows, ditches, and
diversions is not practical because of the characteristics of
the soil, such as the slope and the cobblestones. If the soil is
used for grazing, the stocking rate should be controlled so
that it is protected and damage to adjoining areas is
prevented. (Capability unit VIIe-9; woodland group Idl)



Coloso Series
The Coloso series consists of deep, somewhat poorly
drained, nearly level soils that are slightly acid and moder-
ately permeable. These soils are on the flood plains of rivers
that drain uplands underlain by volcanic rocks and lime-
stone. They formed in alluvium that consists of recent de-
posits of silt and clay. The depth to a water table is 24 to 48
inches. The climate is humid. Rainfall amounts to 70 to 90
inches, and the annual temperature ranges from 76 to 790 F.

In a representative profile the surface layer is dark-
brown, slightly acid silty clay loam about 7 inches thick.
The subsoil, to a depth of about 13 inches, is dark-brown,
slightly acid silty clay loam that has common fine mottles of
yellowish red and light gray. The substratum is dark-gray
and light gray, slightly acid, firm, slightly sticky and plastic
silty clay loam or silty clay. It has many medium mottles of
reddish brown, yellowish brown, and greenish gray.



Most of the acreage of these soils has been in sugarcane
for many years.
Representative profile of Coloso silty clay loam, 1 kilome-
ter west of Anasco, 250 meters west of kilometer marker
145.5 on Highway No. 2, and 50 meters north of farm road.

Ap-0 to 7 inches, dark-brown (10YR 4/3) silty clay loam; weak, medi-
um, granular structure: firm, slightly sticky and plastic: many
fine roots: few wormholes: slightly acid; clear, smooth
boundary.
B2-7 to 13 inches, dark-brown (10YR 4/3) silty clay loam: common.
fine, distinct mottles of yellowish red (5YR 4/6) and common.
fine, faint mottles of light gray (10YR 7/2): weak, fine. suban-
gular blocky structure: firm, slightly sticky and slightly plas-
tic; common fine roots: few, fine, black concretions: few
wormholes: slightly acid: clear, smooth boundary.


Colinas guijarroso arcilloso 16mico, 20 a 40 porciento de
declive (CmE).-Este suelo esti en las laderas y en las cimas
de los montes calizos. Tiene un perfil similar al descrito
como representative para la series, pero la capa superficial
contiene muchos fragments calizos redondeados o parcial-
mente redondeados. Estos fragments varian en diametro
desde 3 hasta 10 pulgadas. Ellos ocupan del 20 al 50 porcien-
to de el area superficial. El escurrimiento es ripido, y la ero-
si6n es un peligro.
Se incluyen areas de afloraciones calizas. Estas areas al-
canzan hasta el 5 porciento o menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso es limitado a pastoreo, bosques, y habitat de vida
silvestre. El declive, el escurrimiento, la erosion pasada, el
peligro de erosi6n en el future, y el gran numero de guijar-
ros en la superficie son limitaciones. El mejoramiento de
pastos, con practices tales como abonamiento, siembra, y el
control de aguas por zanjas, y zanjas de desviaci6n no es
practice debido a las caracteristicas de este suelo tales
como el declive y la cantidad de guijarros. Si el suelo se
usare para pastoreo se debe controlar el n6mero de ani-
males, de manera que se proteja el suelo y se evite el perjui-
cio a las areas adyacentes. (Unidad de capacidad VIIe-9;
grupo de bosques Idl)

Serie Coloso
La series Coloso consiste de suelos profundos, de desagiie
algo pobre, casi Ilanos, que son ligeramente Acidos y moder-
adamente permeables. Estos suelos estin en los llanos in-
undables de los rios que desaguan las alturas volcinicas y
calizas. Se han formado en materials aluviales que consis-
ten de dep6sitos recientes de limo y de arcilla. La profundi-
dad al nivel freitico es desde 24 hasta 48 pulgadas. El clima
es htlmedo. La lluvia alcanza de 70 a 90 pulgadas, y la tem-
peratura annual varia desde 760 hasta 790 F.
En un perfil representative la capa superficial es pardo
oscura, ligeramente acida, de textura limo arcilloso 16mica,
de alrededor de 7 pulgadas de espesor. El subsuelo, hasta
una profundidad de alrededor de 13 pulgadas, es pardo os-
curo, ligeramente acido, de textura limo-arcilloso-16mica,
que tiene algunas manchas comunes y finas de color rojo
amarilloso y gris claro. El substrato es gris oscuro y gris
claro, ligeramente acido, firme, ligeramente pegajoso y
plistico, de textura limo-arcilloso-16mica o limo-arcilloso.
Tiene muchas manchas de tamafio median de color pardo
rojizo, pardo amarilloso, y gris verdoso.
La mayor parte del cuerdaje de estos suelos ha estado en
cafia de azuicar por much tiempo.
Perfil representative de Coloso limo arcilloso 16mico, 1
kil6metro al oeste del pueblo de Afiasco, 250 metros al
oeste del marcador de kil6metros 145.5 en la carretera no. 2,
y 50 metros al norte de un camino de finca.
Ap-0 a7 pulgadas, pardo oscuro (10YR 4/3) limo arcilloso 16mico;
estructura granular, d6bil median; consistencia firme, leve-
mente pegajosa, plistica; presencia de raicillas abundantes;
algunas cavidades de gusanos; ligeramente acido; limited claro
liso.
B2-7 a 13 pulgadas, pardo oscuro (10YR 4/3) con manchas comunes,
finas, precisas, color rojo amarillentas (5YR 4/6) y manchas
comunes, finas, tenues, color gris claro (10YR 7/2); limoso
arcilloso 16mico; estructura bloque subangular, debil fina;
consistencia firme, levemente pegajosa, levemente plastica;
algunas raicillas; algunas concreciones negras; algunas cavi-
dades de gusanos; ligeramente acido; limited claro liso.







SOIL SURVEY


Cl-13 to 33 inches, dark-gray (IOYR 4/1) and light-gray (5YR 7/1)
silty clay loam; many, medium, distinct mottles of reddish
brown (5YR 4/3); massive; firm, slightly sticky and plastic:
few fine roots; common, fine, black concretions; few
wormholes; slightly acid: gradual, smooth boundary.

C2g-33 to 58 inches +, dark-gray (IOYR 4/1) silty clay; many, fine,
faint mottles of yellowish brown (IOYR 5/8) and common,
fine. distinct mottles of greenish gray (5GY 5/1); massive:
firm, slightly sticky and plastic; few fine roots: common, fine.
black concretions: few wormholes: slightly acid.

The thickness of the solum ranges from 10 to 22 inches. Reaction
ranges from slightly acid to medium acid. The content of organic
matter does not decrease regularly with increasing depth. The A
horizon has a value of 3 or 4 and a chroma of 3 or 4. The B horizon has
matrix colors in a hue of 10YR or 2.5YR, a value of 4 or 5, and a
chroma of 2 to 4, but its mottles have a chroma dominantly of 2 or less.
The structure of this horizon ranges from weak, fine, subangular
blocky to weak, medium, subangular blocky. The C horizon ranges
from silty clay loam to clay in texture.


Coloso silty clay loam (Cn).-This soil is on flood plains
not far from the banks of the streams and rivers and is sub-
ject to occasional flooding that causes damage. It is a nearly
level, somewhat poorly drained soil that is fertile and has
high available water capacity.
Included in mapping were small areas of Toa silty clay
loam and Bajura clay. These areas make up 5 percent or less
of the acreage.
This soil is suited to cultivated crops. It has been used
mainly for sugarcane. Flooding, a seasonally high water ta-
ble, and wetness, which can be corrected by drainage, are
moderate limitations. Careful management of soil and con-
trol of water are needed. The soil is somewhat easily
worked. (Capability unit IIw-6; not in a woodland group)



Consumo Series
The Consumo series consists of well-drained soils that are
very strongly acid and moderately permeable. These soils
formed in residual material weathered from volcanic rock
and tuffaceous mudstone. The slope ranges from 20 to 60
percent. The climate is humid and tropical. Rainfall
amounts to 80 to 90 inches, and the annual temperature
ranges from 72 to 790 F.
In a representative profile the surface layer is reddish-
brown, very strongly acid clay about 6 inches thick. The
subsoil, to a depth of 20 inches, is red, very strongly acid,
friable, slightly sticky and slightly plastic clay and silty clay.
The substratum is thick, very strongly acid, very friable,
nonsticky and slightly plastic silty clay loam variegated with
varying proportions of red, yellow, brown, and light gray.
Depth to semiconsolidated rock is more than 4 feet.



These soils are used for sugarcane, pasture, coffee, and
subsistence crops. Some areas are in brush.

Representative profile of Consumo clay, 40 to 60 percent
slopes, eroded, 12.8 kilometers east of the city of Maya-
guez, 30 meters west and 15 meters south of kilometer
marker 13.5 on Highway No. 106.


Cl-13 a 33 pulgadas, gris oscuro (10YR 4/1) y gris claro (5YR 7/1)
limoso arcilloso 16mico; con muchas manchas medianas-pre-
cisas, color pardo rojizas (5YR 4/3); estructura macisa: con-
sistencia firm, levemente pegajosa, plastica; presencia de
raicillas, algunas; presencia de concreciones, comunes finas.
negras; algunas cavidades de gusanos: levemente acido: lim-
ite gradual liso.
C2g-33 a 58 pulgadas +, gris oscuro (IOYR 4/1) limoso arcilloso: con
muchas manchas finas, tenues, color pardo-amarillentas
(IOYR 5/8) y manchas comunes, finas, precisas. color gris-
verdosas (5GY 5/1); estructura macisa; consistencia fire,
levemente pegajosa, plastica; presencia de raicillas, algunas:
presencia de concreciones, comunes finas, negras: algunas
cavidades de gusanos; ligeramente icido.
El grosor del solum varia desde 10 hasta 22 pulgadas. La reacci6n
varia desde ligeramente acida hasta medianamente icida. El contenido
de material orgAnica no disminuye regularmente con la profundidad. El
horizonte A tiene valores de 3 y 4 y cromas de 3 y 4. El horizonte B
tiene colors matrices en matices de IOYR o 2.5YR, valor de 4o 5. y
cromas de 2 hasta 4, pero las manchas tienen cromas dominantemente
de 2 o menos. La estructura de este horizonte varia desde dibil-fina
subangular en bloques hasta debil-mediana subangular en bloques. El
horizonte C varia desde limo arcilloso 16mico hasta arcilloso en tex-
tura.
Coloso limo arcilloso l0mico (Cn).-Este suelo esti en los
llanos inundables no muy lejos de las margenes de las que-
bradas y rios y esta propenso a inundaciones ocasionales
que causan perjuicios. Es un suelo casi Ilano, de desagiie
algo pobre, f6rtil, y que tiene una capacidad de retenci6n de
agua alta.
Se incluyen areas pequefias de Toa limo arcilloso 16mico
y de Bajura arcilloso. Estas areas alcanzan al 5 porciento o
menos del cuerdaje total.
Este suelo se presta para cosechas de cultivo limpio. Se
ha usado mayormente para la siembra de cafia de azicar. La
susceptibilidad a inundaciones, el nivel fr;atico alto, y la
humedad, que puede corregirse por medio de desagiie, son
limitaciones moderadas. Se requieren un manejo cuidadoso
y un buen control de agua. Este suelo es de laboreo algo
ficil. (Unidad de capacidad IIw-6; no esti en un grupo de
bosques)

Serie Consumo
La series Consumo consiste de suelos de buen desagiie,
que son muy fuertemente acidos y moderadamente permea-
bles. Estos suelos se han formado en materials residuales,
meteorizados de rocas volcinicas y tuficeas. El declive va-
ria de 20 hasta 60 porciento. El clima es himedo y tropical.
La lluvia alcanza de 80 a 90 pulgadas, y la temperature annual
varia desde 72 hasta 790 F.
En un perfil representative la capa superficial es pardo
rojiza, muy fuertemente acida, de textura arcillosa y de al-
rededor de 6 pulgadas de espesor. El subsuelo, hasta una
profundidad de 20 pulgadas, es rojo, muy fuertemente aci-
do, friable, ligeramente pegajoso y ligeramente plistico,
arcilloso o limo-arcilloso. El substrato es grueso, muy
fuertemente acido, muy friable, no pegajoso y levemente
plastico, de textura limo-arcilloso 16mica, veteado con di-
ferentes proporciones de rojo, amarillo, pardo y gris claro.
La profundidad a la roca semi-consolidada es de mas de 4
pies.
Estos suelos se usan para cafia de azdcar, pastos, caf6 y
cosechas para uso en la finca. Algunas areas estin en breii-
ales.
Perfil representative de Consumo arcilloso, 40 a 60 por-
ciento de declive, erodado, 12.8 kil6metros al este de la ciu-
dad de Mayaguez, 30 metros al oeste y 15 metros al sur del
marcador de kilometros 13.5 de la carretera no. 106.







MAYAGUEZ AREA OF WESTERN PUERTO RICO


Ap-0 to 6 inches, reddish-brown (5YR 4/4) clay: moderate, medium,
granular structure; slightly hard, friable, slightly sticky and
slightly plastic: many fine roots; very strongly acid; clear,
smooth boundary.
B2t-6 to 14 inches, red (2.5YR 4/8) clay: weak, fine, subangular
blocky structure: thin patchy clay films; friable, slightly
sticky and slightly plastic; common fine pores and root chan-
nels: common fine roots; very strongly acid; gradual, smooth
boundary.
B3-14 to 20 inches, silty clay that is red (2.5YR 4/8) rubbed: 50 per-
cent of material is saprolite; weak, fine, subangular blocky
structure; thin patchy clay films; friable, nonsticky and slight-
ly plastic: few fine roots: very strongly acid; gradual, smooth
boundary.
C-20 to 60 inches +, variegated red (2.5YR 4/8 to 5/8), yellow (1OYR
7/8), brown (7.5YR 5/4), and light-gray (IOYR 7/1) silty clay
loam (saprolite); massive; black coatings on some faces: very
friable, nonsticky and slightly plastic; very strongly acid:
original rock structure is visible, and weathered rock frag-
ments can be broken easily between fingers.

The solum ranges from silty clay to clay in texture and from 14 to 24
inches in thickness. The A horizon has a hue of 5YR and 2.5YR, a val-
ue of 3 to 5, and a chroma of 4 and higher. The B horizon ranges from
10 to 16 inches in thickness. The B2t horizon has weak subangular
blocky structure that ranges from fine to medium in class, and thin clay
films that are patchy to discontinuous. Saprolite makes up 40 to 60
percent of the B3 horizon. The C horizon ranges from silty clay loam
to loam in texture.

Consumo clay, 20 to 40 percent slopes (CoE).-This soil is
on side slopes and ridgetops of the volcanic uplands. It has a
profile similar to the one described as typical of the series,
but the combined surface layer and subsoil is thicker. This
soil has been less affected by erosion than Consumo clay, 40
to 60 percent slopes, eroded. The surface layer is reddish-
brown clay 8 to 10 inches thick, and the subsoil is red clay
10 to 16 inches thick. Runoff is rapid. and erosion is a haz-
ard.

Included in mapping were severely eroded areas where
the substratum is exposed. Also included were areas of
Humatas clay and Daguey clay. These areas make up 15
percent or less of the acreage.

This soil is not suited to cultivated crops. It is used mainly
for pasture and coffee, but there are some areas in brush
and subsistence crops. This soil can be used safely for pas-
ture, woodland, coffee, or wildlife habitat. Slope, runoff,
and hazard of erosion are severe limitations. The improve-
ment of pasture by such practices as liming, fertilizing,
seeding, and controlling water is practical because the
condition of the soil is favorable. If the soil is used for graz-
ing, care should be taken to control the stocking rate so that
this soil and adjoining areas are protected. (Capability unit
VIe-13; woodland groups lol, 1o2, lo3, lo4)


Consumo clay, 40 to 60 percent slopes, eroded (CoF2).-
This soil is on strongly dissected side slopes and ridgetops
throughout the volcanic uplands. It has the profile described
as representative of the series. Runoff is rapid, and erosion
is a severe hazard.
SIncluded in mapping were severely eroded areas where
the saprolite is exposed. Also included were areas of Huma-
tas clay and Anones clay. These areas make up 15 percent
or less of the acreage.


Al-0 a 6 pulgadas, pardo rojizo (5YR 4/4) arcilloso; estructura gran-
ular, moderada, median; consistencia ligeramente dura; fria-
ble, levemente pegajoso, levemente plistico; presencia de
raicillas, abundantes; bien fuertmente acido; limited claro liso.
B2t-6 a 14 pulgadas, rojo (2.5YR 4/8) arcilloso; estructura bloque
subangular d6bil fina; con mosaicos recubiertos con peliculas
finas de arcilla; consistencia friable, levemente pegajosa y
plistica; presencia de cavidades de raices, comunes y finas;
limited gradual liso.
B3-14 a 20 pulgadas, rojo (2.5YR 4/8) al frotarse; limoso arcilloso; el
saprolito constitute el 50 porciento del volumen del hori-
zonte; estructura bloque subahgular, d6bil fina, con mosaicos
recubiertos de arcilla; consistencia friable, no pegajosa, leve-
mente plistica; presencia de raicillas, algunas; bien fuerte-
mente acido; limited gradual liso.
C-20 a 60 pulgadas +; saprolito veteado con color rojo (2.5YR 4/8 a
5/8), amarillo (10YR 7/8), pardo (7.5YR 5/4), gris claro (IOYR
7/1); textura limoso arcilloso 16mico; masiva; revestimientos
negros; consistencia bien friable, no pegajosa, levemente
plistica; bien fuertemente acido; la estructura original de la
roca todavia perdura en el material originario de este suelo y
result facil desmenuzar, entire los dedos los fragments de
roca.
El solum varia desde limo arcilloso hasta arcilloso en textura, y
desde 14 hasta 24 pulgadas en espesor. El horizonte A tiene matices de
5YR y 2.5YR, valores de 3 a 5, y cromas de 4 y mis alto. El horizonte
B varia desde 10 hasta 16 pulgadas en espesor. El horizonte B2t tiene
estructura bloque subangular d6bil, que varia desde fina hasta median
en clase, y peliculas de arcilla fina que varian desde t6nues hasta des-
continuas. El saprolito alcanza hasta el 40 a 60 porciento del horizonte
B3. El horizonte C varia desde limo arcilloso 16mico hasta 16mico en
textura.

Consumo arcilloso, 20 a 40 porciento de declive (CoE).-
Este suelo esti en las laderas y en las cumbres de las alturas
volcinicas. Tiene un perfil similar al descrito como tipico de
la series, pero la capa superficial y el subsuelo son mas grue-
sos. La erosi6n no ha afectado a este suelo tanto como a
Consumo arcilloso, 40 a 60 porciento de declive, erodado.
La capa superficial es pardo rojiza, de textura arcillosa, de 8
a 10 pulgadas de espesor, y el subsuelo es rojo, de textura
arcillosa, de 10 a 16 pulgadas de espesor. El escurrimiento
es rapido, y la erosi6n es un peligro.
Se incluyen areas que estan severamente erodadas y
donde el substrato esta expuesto en la superficie. Tambi6n
se incluyen areas de Humatas arcilloso y de Daguey arcillo-
so. Estas areas alcanzan al 15 porciento o menos del cuer-
daje total.
Este suelo no se presta para cosechas de cultivo limpio.
Se usa mayormente para pastos y para caf6, pero hay algun-
as areas que estin en brefiales y otras en cosechas para uso
de la finca. Se puede usar sin peligros para pastos, bosques,
caf6, o habitat de vida silvestre. El declive, el escurrimiento
y el peligro de erosi6n future son limitaciones several. El
mejoramiento de pastos por practices tales como encala-
miento, abonamiento, siembra, y control de agua es practi-
co porque la condici6n fisica del suelo es favorable. Si el
suelo se usare para pastoreo, es precise tener cuidado de
controlar el nmmero de animals para no causar perjuicio al
suelo ni a las areas adyacentes. (Unidad de capacidad VIe-
13; grupos de bosques lol, lo2, lo3, lo4)
Consumo arcilloso, 40 a 60 porciento de declive, erodado
(CoF2).-Este suelo esti en laderas y cumbres fuertemente
bisectadas a traves de todas las alturas volcinicas. Tiene el
perfil descrito como representative para la series. El escurri-
miento es ripido y la erosion es un peligro severe.
Se incluyen areas severemante erodadas donde el saproli-
to esti expuesto en la superficie. Tambi6n se incluyen areas
de Humatas arcilloso y de Anones arcilloso. Estas areas
alcanzan al 15 porciento o menos del cuerdaje total.







SOIL SURVEY


This soil is not suited to cultivated crops. It can be used
safely for grazing, woodland, or wildlife habitat. A large
acreage is in native pasture and abandoned coffee, and a
few areas are in subsistence crops. Some areas are in brush.
Slope, runoff, shallowness to saprolite, past erosion, and
hazard of further erosion are severe limitations. The im-
provement of pasture by such practices as liming, fertiliz-
ing, seeding, and controlling water with contour furrows,
ditches, or diversions is not practical. It is necessary to con-
trol the stocking rate so that the soil and adjoining areas are
protected. (Capability unit VIIe-6; woodland groups lol,
lo2, 1o3, lo4)



Corcega Series
The Corcega series consists of somewhat poorly drained
soils that are slightly acid and moderately permeable. These
soils are moderately deep to sand. Depth to dark-gray sand
is 24 to 40 inches. These soils formed in medium-textured
alluvial sediments on the flood plains of rivers. These sedi-
ments are underlain by sandy deposits. The climate is humid
and tropical. Rainfall amounts to 70 to 80 inches, and the
annual temperature ranges from 770 to 790 F.

In a representative profile the surface layer is dark-
brown, slightly acid, silty clay loam about 8 inches thick.
The upper part of the subsoil is dark-brown, slightly acid,
firm, slightly sticky and slightly plastic silty clay loam mot-
tled with light gray and yellowish red. The lower part, to a
depth of about 32 inches, is dark-gray, slightly acid, firm,
slightly sticky and slightly plastic sandy clay loam. The sub-
stratum is dark-gray, slightly acid sand to a depth of more
than 5 feet.


Nearly all the acreage has been in sugarcane for many
years.
Representative profile of Corcega silty clay loam, 3.2 kil-
ometers west of the town of Anasco, 40 meters west of kilo-
meter marker 2.0 on Highway No. 115.
Ap-0 to 8 inches, dark-brown (10YR 4/3) silty clay loam; weak, medi-
um, granular structure: firm, slightly sticky and slightly plas-
tic; many fine roots; slightly acid: clear, smooth boundary.
B2-8 to 14 inches, dark-brown (10YR 4/3) silty clay loam; common,
fine, prominent mottles of yellowish red (5YR 4/6) and few,
fine, distinct mottles of light gray (10YR 7/2); weak, fine,
subangular blocky structure; firm, slightly sticky and slightly
plastic; common fine roots; common, fine, black concretions;
slightly acid; clear, smooth boundary.
B3-14 to 32 inches, dark-gray (10YR 4/1) sandy clay loam; common.
fine, distinct mottles of reddish brown (5YR 4/3) and gray
(10YR 5/1); weak, medium, subangular blocky structure:
firm, slightly sticky and slightly plastic: few fine roots: com-
mon, fine, black concretions: slightly acid; clear, smooth
boundary.
11C-32 to 50 inches +, dark-gray (10YR 4/1) sand: single grain: loose,
nonsticky and nonplastic; slightly acid.


Este suelo no se presta para cosechas de cultivo limpio.
Se puede usar sin peligros para pastoreo, para bosques o
para habitat de vida silvestre. Un area considerable esta en
pastos natives o en caf6 abandonado, y algunas areas pe-
quefias estan en cosechas para el consume de la finca. Al-
gunas areas tambi6n estin en brefiales. El declive, el escur-
rimiento, la poca profundidad al saprolito, la erosion pasa-
da, y el peligro de erosi6n future son limitaciones several.
El mejoramiento de past por medio de prActicas tales como
encalamiento, abonamiento, siembra, y el control de agua
por medio de zanjas y zanjas de desviaci6n no es practice.
Es precise controlar el n6mero de animals para protejer el
suelo y las areas adyacentes. (Unidad de capacidad VIIe-6;
grupos de bosques lol, lo2, lo3, lo4)

Serie C6rcega
La series C6rcega consiste de suelos de desague algo
pobre, que son ligeramente acidos y moderadamente perme-
ables. Estos suelos son moderadamente profundos a arenas.
La profundidad a la arena, que es gris oscura, es desde 24 a
40 pulgadas. Estos suelos se han formado en sedimentos
aluviales de textura median en los Ilanos inundables de los
rios. Bajo estos sedimentos hay dep6sitos de arenas. El cli-
ma es h6medo y tropical. La lluvia alcanza a 70 hasta 80
pulgadas, y la temperature annual varia desde 77 hasta 790 F.
En un perfil representative la capa superficial es pardo
oscura, ligeramente acida, de textura limo-arcilloso-16mica,
y de alrededor de 8 pulgadas de espesor. La parta superior
del subsuelo es pardo oscura, levemente acida, firme, leve-
mente pegajosa y levemente plastica, de textura limo arcil-
loso 16mica con manchas de gris claro y rojo amarilloso. La
parte inferior, hasta una profundidad de 32 pulgadas, es gris
oscuro, levemente acida, firme, levemente pegajosa y leve-
mente plastica, de textura areno-arcilloso-16mica. El sub-
strato es gris oscuro, levemente icido, de textura arenosa
hasta una profundidad de mis de 5 pies.
Casi todo el cuerdaje ha estado en calfa de azucar por
muchos afios.
Perfil representative de C6rcega limo arcilloso 16mico, 3.2
kil6metros al oeste del pueblo de Afiasco, 40 metros al oeste
del marcador de kil6metros 2.0 en la carretera no. 115.
Ap-0 a 8 pulgadas, pardo oscuro (10YR 4/3) limo arcilloso 16mico:
estructura debil median; consistencia firme. levemente pe-
gajosa, levemente plistica; presencia de raicillas. abun-
dantes; ligeramente acido; limited claro liso.
B2-8 a 14 pulgadas, pardo oscuro (10YR 4/3) limoso arcilloso 16mi-
co; con manchas comunes, finas, prominentes, color rojo
amarilloso (5YR 4/6), y algunas otras finas. precisas. color
gris claro (10YR 7/2); estructura bloque subangular. debil-
mediana; consistencia firme, levemente pegajosa, levemente
plistica; presencia de raicillas, comunes; concreciones ne-
gras, algunas; ligeramente acido; limited claro liso.
B3-14 a 32 pulgadas, pardo oscuro (10YR 4/1) areno arcilloso 1Imi-
co, con manchas comunes, finas, precisas, color pardo rojizo
(5YR 4/3) y gris (10YR 5/1); estructura bloque subangular.
d6bil median; consistencia firme, levemente pegajosa, leve-
mente plastica; presencia de raicillas, algunas; concreciones
negras, comunes; ligeramente acido; limited claro liso.
IIC-32 a 50 pulgadas +, gris oscuro (10YR 4/1) arenoso; estructura
arena incoherente; consistencia suelta: no pegajosa y no
plAstica; ligeramente acido.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


The depth to sand ranges from 24 to 40 inches, and the depth to a
water table ranges from 10 to 36 inches. Reaction ranges from slightly
acid to medium acid. The A horizon has matrix colors in a hue of 10YR
and a value of 3 and 4. The B horizon has matrix colors in a hue of
10YR, a value of 4, and a chroma of 2 to 4. It has mottles that range
from few to common in abundance and are yellowish red, reddish
brown, light gray, and gray. This horizon has weak subangular blocky
structure that ranges from fine to medium in class. The C horizon has
matrix colors in a hue of 10YR and 2.5Y, a value of 4, and a chroma of
I and 2. It has mottles of reddish brown and yellowish brown, as well
as in gley colors.

Corcega silty clay loam (Cr).-This is a nearly level soil on
the flood plains of rivers. It is subject to occasional flooding
that causes damage. The water table is seasonally high. The
soil is fertile and has high available water capacity.

Included in mapping were areas of Coloso silty clay loam.
These areas make up 5 percent or less of the acreage.
This soil is suited to cultivated crops. It has been used
mainly for sugarcane. It is somewhat easily worked. Flood-
ing, seasonally high water table, and wetness, which can be
corrected by drainage, are moderate limitations. Manage-
ment practices that improve drainage are needed. (Capabili-
ty unit IIw-6; not in a woodland group)


Cotito Series
The Cotito series consists of moderately deep, well-
drained soils that are slightly acid and moderately permea-
ble. These soils are in valleys. They formed in material
washed from the adjacent limestone hills. The slope ranges
from 0 to 5 percent. The climate is subhumid. Rainfall
amounts to 55 to 65 inches, and the annual temperature
ranges from 760 to 790 F.

In a representative profile the surface layer is reddish-
brown, slightly acid clay about 6 inches thick. The subsoil,
to a depth of 29 inches, is yellowish-red or strong-brown,
slightly acid or neutral, friable, slightly sticky and slightly
plastic clay. Beneath this layer is hard, fragmental lime-
stone that contains pockets of soil material similar to that in
the subsoil.

Most of the acreage is in native pasture, but a small
acreage is in sugarcane.

Representative profile of Cotito clay, 0 to 5 percent
slopes, eroded, 8.0 kilometers east of the city of Aguadilla,
548 meters north of kilometer marker 115.1 on Highway No.
2.
Ap-0 to 6 inches, reddish-brown (5YR 4/4) clay; weak, fine, granular
structure; hard, friable, slightly sticky and slightly plastic;
common fine roots: slightly acid; gradual, smooth boundary.
B21-6 to 12 inches, yellowish-red (5YR 6/6) clay; weak, medium,
subangular blocky structure: hard, friable, slightly sticky and
slightly plastic: common fine roots: thin patchy clay films;
few fine pores; neutral; gradual, smooth boundary.

B22-12 to 20 inches, yellowish-red (5YR 6/6) clay; weak, medium,
subangular blocky structure; hard, friable, slightly sticky and
slightly plastic: few fine roots; thin patchy clay films: com-
mon fine pores: slightly acid: gradual, smooth boundary.


La profundidad a la arena varia desde 24 hasta 40 pulgadas, y la pro-
fundidad al nivel freatico varia desde 10 hasta 36 pulgadas. La reac-
ci6n varia desde ligeramente acida hasta medianamente Acida. El hori-
zonte A tiene colors matrices en matices de 10YR, valores de 3 y 4. El
horizonte B tiene colors matrices en matices de 10YR, valor de 4 y
cromas de 2 a 4. Tiene manchas que varian desde pocas a comunes en
abundancia y que son rojo amarilloso, pardo amarilloso, gris claro y
gris. Este horizonte tiene estructura subangular en bloque que varia
desde fina hasta median en clase. El horizonte C tiene colors matri-
ces en matices de 10YR y 2.5Y, valor de 4, y cromas de 1 y 2. Tiene
manchas de color pardo rojizo y pardo amarilloso, al igual que colors
gley.
Corcega limo arcilloso 16mico (Cr).-Este suelo es casi
llano en los llanos inundables de los rios. Esti sujeto a inun-
daciones ocasionales que causan perjuicio. El nivel freitico
es peri6dicamente alto. El suelo es f6rtil y tiene una capaci-
dad de retenci6n de agua alta.
Se incluyen areas de Coloso limo arcilloso 16mico. Estas
areas alcanzan al 5 porciento o menos del cuerdaje total.
El suelo se presta para la siembra de cosechas de cultivo
limpio. Ha sido usado mayormente para cania de azucar. Es
de laboreo algo ficil. La susceptibilidad a inundaciones, el
nivel freatico alto, y la humedad, que puede corregirse por
medio de desague, son limitaciones moderadas. Se necesi-
tan prActicas de manejo para mejorar el desague. (Unidad
de capacidad IIw-6; no esta en grupo de bosques)

Serie Cotito
La series Cotito consiste de suelos moderadamente pro-
fundos, de buen desagiie, que son ligeramente acidos y
moderadamente permeables. Estos suelos estan en valles.
Se han formado en materials que han sido lavados desde
los montes calizos adyacentes. El declive varia desde 0 has-
ta 5 porciento. El clima es subhtimedo. La lluvia alcanza a
55 y hasta 65 pulgadas, y la temperature annual varia desde
760 hasta 790 F.
En un perfil representative, la capa superficial es pardo
rojiza, ligeramente acida, y de textura arcillosa, y de alrede-
dor de 8 pulgadas de espesor. El subsuelo, hasta una pro-
fundidad de 29 pulgadas, es rojo amarilloso o pardo fuerte,
Sligeramente acido o neutral, friable, ligeramente pegajoso y
ligeramente plAstico, de textura arcillosa. Bajo esta capa
esta la piedra caliza dura fragmentaria que contiene algunos
bolsillos de material similar al del subsuelo.
La mayor parte del cuerdaje esti en pastos natives, pero
tambi6n una pequefia parte del cuerdaje esta en cania de
azucar.
Perfil representative de Cotito arcilloso, 0 a 5 porciento
de declive, erodado, 8.0 kil6metros al este de la ciudad de
Aguadilla, 548 metros al norte del marcador de kil6metros
115.1 en la carretera no. 2.
Ap-0 a 6 pulgadas, pardo rojizo (5YR 4/4) arcilloso; estructura granu-
lar d6bil fina; consistencia dura, friable, levemente pegajosa,
levemente plastica; presencia de raicillas, comunes; ligera-
mente Acido; limited gradual liso.
B21-6 a 12 pulgadas, rojo amarillento (5YR 6/6) arcilloso; estructura
bloque subangular, d6bil median; consistencia dura en seco,
friable, levemente pegajosa, levemente plastica; presencia de
raicillas, comunes; mosaicos delgados revestidos de peliculas
de arcilla; algunas cavidades finas; neutral; limited gradual
liso.
B22-12 a 20 pulgadas, rojo amarillento (5YR 6/6) arcilloso; estruc-
tura bloque subangular d6bil median; consistencia dura en
seco, friable, levemente pegajosa, levemente plastica; pre-
sencia de raicillas, algunas; mosaico delgados, revestidos de
peliculas de arcilla; cavidades comunes y finas; ligeramente
acido; limited gradual liso.







SOIL SURVEY


B23-20 to 24 inches, yellowish-red (5YR 5/6) clay: weak, medium,
subangular blocky structure; hard, friable, slightly sticky and
slightly plastic: few fine roots: common fine pores: thin clay
films in root channels; slightly acid: gradual, smooth bounda-
ry.
B24-24 to 29 inches, strong-brown (7.5YR 5/6) clay: weak, medium,
subangular blocky structure: slightly hard, friable, slightly
sticky and slightly plastic; many fine pores: thin patchy clay
films: slightly acid; abrupt, irregular boundary.

R-29 to 40 inches +, white, hard, fragmental limestone: outer edges
stained with strong brown: pockets in limestone filled with
material similar to the soil material of the B24 horizon.
The depth to hard fragmental limestone ranges from 20 to 40 inches.
Reaction ranges from slightly acid to neutral throughout the profile.
The A horizon has a hue of 5YR and 7.5YR, a value of 3 and 4. and a
chroma of 4. The B2 horizon has a hue of 7.5YR and 5YR, a value of 5
and 6, and a chroma of 6 and higher. It has weak subangular structure
that ranges from fine to medium in class.

Cotito clay, 0 to 5 percent slopes, eroded (CtB2).-This soil
is moderately deep to hard fragmental limestone. The avail-
able water capacity is moderate, and fertility is medium.
Included in mapping were areas of Coto clay and Lime-
stone outcrop. These areas make up 5 percent or less of the
acreage.

This soil is suited to cultivated crops. It is mainly in sugar-
cane. Some areas are irrigated. The soil is easily worked.
Slope and depth to limestone are limitations. Special man-
agement practices are needed in cultivated areas. Crops
respond well to fertilizer. (Capability unit IIIe-9; not in a
woodland group)


Coto Series
The Coto series consists of deep, well-drained soils that
are slightly acid and moderately permeable. These soils
formed in material washed from the surrounding limestone
hills. The slope ranges from 2 to 12 percent. The climate is
subhumid. Rainfall amounts to 55 to 65 inches, and the an-
nual temperature ranges from 760 to 790 F.

In a representative profile the surface layer is reddish-
brown, slightly acid clay about 7 inches thick. The subsoil is
dark-brown or strong-brown, slightly acid, firm or friable,
slightly sticky and slightly plastic clay. Underlying this layer
at a depth of about 51 inches is hard fragmental limestone.
Most of the acreage is in sugarcane and native pasture. A
small acreage is in subsistence crops.



Representative profile of Coto clay, 2 to 5 percent slopes,
eroded, in the Isabela substation 122 meters north of kilo-
meter marker 115.1 on Highway No. 2.

Ap-0 to 7 inches, reddish-brown (5YR 4/4) clay: wv.K, fine, granular
structure; loose, friable, slightly sticky and slightly plastic;
common fine roots; slightly acid: clear, smooth boundary.
B21-7 to 11 inches, dark-brown (7.5YR 4/4) clay; weak, medium,
subangular blocky structure; hard, firm, slightly sticky and
slightly plastic; common fine roots; many fine pores; slightly
acid; clear, smooth boundary.


B23-20 a 24 pulgadas, rojo-amarillento (5YR 5/6) arcilloso; estruc-
tura bloque subangular d6bil median; consistencia dura en
seco, friable, levemente pegajosa, levemente plistica; pre-
sencia de raicillas, algunas; cavidades comunes y finas; arcil-
la acumulada en las cavidades de raices; ligeramente icido;
limited gradual liso.
B24-24 a 29 pulgadas, pardo fuerte (7.5YR 5/6) arcilloso; estructura
bloque subangular d6bil median: consistencia levemente
dura en seco, fr;able, levemente pegajosa, levemente plfsti-
ca; abundantes cavidades finas; mosaicos delgados revesti-
dos con peliculas de arcilla; ligeramente acido. limited abrupto
irregular.
R-29 a 40 pulgadas +, roca caliza, blanca, dura, fragmentada con los
extremes exteriores tefiidos de color pardo fuerte: bolsillos
de acumulaci6n de suelo sobreyacente.
La profundidad a la roca caliza dura fragmentada varia desde 20
hasta 40 pulgadas. La reacci6n varia desde ligeramente icida hasta
neutral, a trav6s de todo el perfil. El horizonte A tiene matices de 5YR
y 7.5YR, valor de 3 y 4, y cromas de 4. El horizonte B2 tiene matices
de 7.5YR y 5YR, valores de 5 y 6, y cromas de 6 y mis altos. Tiene una
estructura subangular en bloque d6bil, que varia desde fina hasta medi-
ana en clase.
Cotito arcilloso, 0 a 5 porciento de declive, erodado (CtB2).
-Este suelo es moderadamente profundo a la piedra caliza
dura fragmentada. La capacidad de retenci6n de agua es
moderada, y la fertilidad es median.
Se incluyen areas de Coto arcilloso y de roca caliza aflor-
ante. Estas areas comprenden el 5 porciento o menos del
cuerdaje total.
Este suelo se presta para la siembra de cosechas cultiva-
das. Esti mayormente en caiia de azticar. Algunas areas
estin bajo riego. El suelo es de facil laboreo. Declive y pro-
fundidad a la roca caliza son limitaciones. Se requieren
practices especiales de manejo en areas cultivadas. Las
cosechas responded bien a la aplicaci6n de abono. (Unidad
de capacidad IIIe-9; no esti en un grupo de bosques)

Serie Coto
La series Coto consiste de suelos profundos, de buen de-
sagiie, que son ligeramente acidos y moderadamente perme-
ables. Estos suelos se han formado en materials que han
sido lavados desde los montes calizos adyacentes. El de-
clive varia desde 2 hasta 12 porciento. El clima es subhfime-
do. La lluvia alcanza hasta 55 y 65 pulgadas, y la tempera-
tura annual varia desde 76 hasta 790 F.
En un perfil representative la capa superficial es pardo
rojiza, ligeramente acida, de textura arcillosa, y de alredre-
dor de 7 pulgadas de espesor. El subsuelo es pardo oscuro o
pardo fuerte, ligeramente Acido, firme o friable, ligeramente
pegajoso y ligeramente plistico, de textura arcillosa. Bajo
esta capa y hasta una profundidad de 51 pulgadas esti la
piedra caliza dura fragmentada. La mayor parte del cuer-
daje esta en cafia de azicar y en pastos natives. Una parte
pequefia del cuerdaje esti en cosechas para el uso de la fin-
ca.
Perfil representative de Coto arcilloso, 2 a 5 porciento de
declive, erodado, en la Sub-Estacion Experimental de Isa-
bela, 122 metros al norte del marcador de kil6metros 115.1,
en la carretera no. 2.
Ap-0 a 7 pulgadas, pardo rojizo (5YR 4/4) arcilloso; estructura granu-
lar, d6bil fina; suelta, friable, levemente pegajosa y leve-
mente plistica; presencia de raicillas, comunes; ligeramente
Acido; limited claro liso.
B21-7 a 11 pulgadas, pardo-oscuro (7.5YR 4/4) arcilloso: estructura
bloque subangular d6bil median; dura, fire, levemente
pegajosa y levemente plfstica; presencia de raicillas, co-
munes; poros fins, abundantes; ligeramente acido; limited
claro liso.







MAYAGUEZ AREA OF WESTERN PUERTO RICO


B22-11 to 24 inches. strong-brown (7.5YR 5/8) clay: weak, medium.
subangular blocky structure: hard, firm, slightly sticky and
plastic: few fine roots: many fine pores: slightly acid: gradual.
wavy boundary.
B23-24 to 43 inches, strong-brown (7.5YR 5/8) clay: weak, medium.
subangular blocky structure: slightly hard, friable, slightly
sticky and slightly plastic: very fine roots: many fine pores:
slightly acid: gradual, wavy boundary.
B24-43 to 51 inches, strong-brown (7.5YR 5/8) clay; weak, medium
and coarse, subangular blocky structure: slightly hard, fria-
ble, slightly sticky and slightly plastic: many fine pores:
slightly acid.
R-51 inches +, hard fragmental limestone.
The thickness of the solum and the depth to underlying fragmental
limestone range from 40 to more than 60 inches. Reaction ranges from
slightly acid to medium acid, but acidity decreases with increasing
depth. The A horizon ranges from clay to clay loam in texture. The Ap
horizon ranges from reddish brown (5YR 4/4) to dark brown (7.5YR
4/4) in color. The B horizon is 50 inches or less in thickness. The B2
horizon has a hue of 7.5YR and 5YR, a value of 4 and 5. and a chroma
of 4 to 8. It has weak subangular structure that ranges from fine to
medium in class. Except in the lower part, this horizon ranges from
slightly sticky to nonsticky and from slightly plastic to nonplastic.

Coto clay, 2 to 5 percent slopes, eroded (CuB2).-This soil
is in small valleys in the limestone area. It has the profile
(fig. 2) described as representative of the series. The availa-
ble water capacity is moderate, and fertility is medium.
Erosion is a hazard.
Included in mapping were small areas of Cotito clay and
Limestone outcrop. Also included were areas of soils that
have a coarse textured surface layer. These areas are adja-
cet to Bejucos sandy loam and sandy clay loam. All of the
included areas make up 10 percent or less of the acreage.
This soil is suited to cultivated crops. A large acreage is in
sugarcane, and many kinds of subsistence crops are grown.
Some areas are in cutgrasses and are used for grazing. Sup-
plementary furrow irrigation has been used in some places.
The soil is easily worked. Slope, past erosion, and hazard of
further erosion are limitations. Moderate management prac-
tices, which are easy to apply, are needed to prevent deteri-
oration of the soil. Crops respond well to fertilizer. (Capa-
bility unit IIe-3: not in a woodland group)



Coto clay, 5 to 12 percent slopes, eroded (CuC2).-This
soil is on foot slopes close to the limestone hills. It has a
profile similar to the one described as representative of the
series, but the surface layer is slightly thinner. This soil has
been affected more by sheet erosion than has Coto clay, 2 to
5 percent slopes, eroded. The surface layer is red-
dish-brown or dark-brown clay 4 to 6 inches thick and con-
sists essentially of material from the original subsoil that is
now surface soil as a result of erosion. The available water
capacity is moderate, and fertility is medium. Erosion is a
hazard.


B22-1 a 24 pulgadas, pardo fuerte (7.5YR 5/8) arcilloso; estructura
bloque subangular d6bil median; dura, firme, levemente
pegajosa, plastica; algunas raicillas; muchos poros finos;
levemente acida; limited gradual ondulante.
B23-24 a 43 pulgadas, pardo fuerte (7.5YR 5/8) arcilloso; estructura
bloque subangular, debil median; ligeramente dura, friable,
levemente pegajosa, levemente plastica; presencia de raicil-
las, abundantes; poros finos, abundantes; ligeramente acido;
limited gradual ondulante.
B24-43 a 51 pulgadas, pardo fuerte (7.5YR 5/8) arcilloso; estructura
bloque subangular d6bil, entire median y gruesa; consisten-
cia ligeramente dura, friable, levemente pegajosa y leve-
mente plastica; poros finos, abundantes; ligeramente acido.
R-51 pulgadas +, roca caliza fragmentada dura.
El grueso del solum y la profundidad a la roca caliza fragmentada
subyacente varia desde 40 hasta mas de 60 pulgadas. La reacci6n varia
desde levemente acido hasta medianamente acida, pero la acidez dis-
minuye con la profundidad. El horizonte A varia desde arcilloso hasta
arcilloso 16mico en textura. El horizonte Ap varia desde pardo rojizo,
(5YR 4/4) hasta pardo oscuro (7.5YR 4/4). El horizonte B alcanza 50
pulgadas o menos en espesor. El horizonte B2 tiene matices de 7.5YR
y 5YR, valores de 4 y 5, y cromas de 4 hasta 8. Tiene estructura d6bil
subangular que varia desde fina hasta median en clase. Excepto en la
parte inferior, este horizonte varia desde levemente pegajoso hasta no
pegajoso, y desde levemente plistico hasta no plastico.
Coto arcilloso, 2 a 5 porciento de declive, erodado (CuB2).
-Este suelo esta en pequefios valles en el area caliza. Tiene
un perfil (fig. 2) descrito como representative de la series. La
capacidad de retenci6n de agua es moderada, y la fertilidad
es median. La erosi6n es un peligro.
Se incluyen areas pequefias de Cotito arcilloso y de aflor-
aciones calizas. Tambi6n se incluyen areas de suelos que
tienen una textura mis gruesa en la capa superficial. Estas
areas estin adyacentes a Bejucos arenoso 16mico y arenoso
arcilloso 16mico. Todas estas areas de inclusiones alcanzan
al 10 porciento o menos del cuerdaje total.
Este suelo se presta para cosechas de cultivo limpio. Un
cuerdaje considerable esta en cafia de azlicar, y tambi6n se
siembran muchas classes de cosechas para el uso en la finca.
Algunas areas estin en yierbas de corte y se usan para pas-
toreo. En algunos sitios se ha usado riego suplementario por
surcos. El suelo es de ficil laboreo. El declive, la erosi6n
pasada, y el peligro de erosion future son limitaciones. Para
evitar el deterioro del suelo, es precise aplicar algunas
pricticas sencillas de manejo. Las cosechas responded bien
a la aplicaci6n de abonos. (Unidad de capacidad IIe-3; no
esta en un grupo de bosques)
Coto arcilloso, 5 a 12 porciento de declive, erodado (CuC2).
-Este suelo esta en las faldas cerca de los montes calizos.
Tiene un perfil similar al descrito como representative de la
series, pero la capa superficial es ligeramente mis delgada.
Este suelo ha sido afectado mis por la erosi6n laminar que
Coto arcilloso, 2 a 5 porciento de declive, erodado. La capa
superficial es pardo rojiza o pardo oscura, de textura arcillo-
sa y de 4 a 6 pulgadas de espesor y consiste esencialmente de
material del subsuelo original que es ahora la capa superfi-
cial como resultado de la erosi6n. La capacidad de reten-
ci6n de humedad es moderada, y la fertilidad es median.
La erosi6n es un peligro.







SOIL SURVEY


Figure 2.--Profile of Coto clay, 2 to 5 percent slopes, eroded.


Included in mapping were spots of Limestone outcrop.
This soil is suited to cultivated crops. A large acreage is in
native pasture, and some areas are in sugarcane and subsist-
ence crops. Some areas are irrigated by the furrow method.
The soil is easily worked. Slope, past erosion, and hazard of
further erosion are severe limitations. The amount of clean
cultivation that can be done is restricted, and special man-
agement practices are needed to prevent further deteriora-
tion of the soil. Crops respond well to fertilizer. (Capability
unit IIIe-9; not in a woodland group)


Figura 2.-Perfil de Coto arcilloso, 2 a 5 porciento de detive, erodado.


Se incluyen algunas areas de afloraciones calizas.
Este suelo se presta para cosechas de cultivo limpio. Un
area considerable esta en pastos natives, y algunas areas
estin en calfa de azicar y cosechas para el uso en la finca.
Algunas areas estin bajo riego, bajo el metodo de surcos. El
suelo es de ficil laboreo. El declive. la erosi6n pasada. y el
peligro de erosi6n future son limitaciones several. La canti-
dad de cultivo limpio que puede hacerse es restrict, v se
requieren practices especiales de manejo para prevenir el
future deterioro de este suelo. Las cosechas responded bien
al uso de abonos. (Unidad de capacidad IIIe-9: no esta en un
grupo de bosques)






MAYAGUEZ AREA OF WESTERN PUERTO RICO


Coto sandy clay loam, 2 to 5 percent slopes (CvB).-This
soil is in the limestone area. It has a profile similar to the one
described as representative of the series, but the surface
layer is sandy clay loam instead of clay. This soil has been
affected less by sheet erosion than Coto clay, 2 to 5 percent
slopes, eroded. It has a surface layer of brown or dark-
brown sandy clay loam 6 to 8 inches thick and a thick,
strong-brown subsoil. The available water capacity is mod-
erate, and fertility is medium. Erosion is a hazard.


This soil is suited to cultivated crops. It has been used
mainly for vegetables and papaya (fig. 3), but some of the
acreage is in sugarcane and native pasture. Some areas are
irrigated. The soil is easily worked. Slope and hazard of
erosion are limitations. Moderate management practices,
which are easy to apply, are needed to prevent deterioration
of the soil in cultivated areas. Crops respond well to fertiliz-
er. (Capability unit IIe-3; not in a woodland group)



Cuchillas Series
The Cuchillas series consists of moderately deep, well-
drained soils that are very strongly acid and moderately
permeable. These soils formed in residual material weath-
ered from volcanic rock in areas of high rainfall and at alti-
tudes above 750 meters. The slope ranges from 20 to 60 per-
cent. The annual soil temperature at a depth of 20 inches is
less than 72 F. The climate is humid. Rainfall amounts to 90
to 100 inches, and the temperature ranges from 72 to 760 F.

In a representative profile the surface layer is dark-
brown, very strongly acid silty clay loam about 5 inches
thick. The subsoil, to a depth of about 15 inches, is dark yel-
lowish-brown, very strongly acid, firm, slightly sticky and
slightly plastic silty clay loam. The substratum consists of
slightly acid, highly weathered volcanic rock underlain by
consolidated rock at a depth of 26 inches.


Most of the acreage is in brushy forest and brushy pas-
ture. A few acres are in coffee.
Representative profile of Cuchillas silty clay loam, 20 to
60 percent slopes, 12.8 kilometers southeast of the town of
Maricao, 400 meters south on dirt road from kilometer
marker 2.3 on Highway No. 374, 6 meters east of dirt road.

Ap-0 to 5 inches, dark-brown (10YR 3/3) silty clay loam: moderate.
fine and medium, granular structure: firm, slightly sticky and
slightly plastic: many fine roots: few, fine, weathered rock
fragments: very strongly acid: worm activity: clear, smooth
boundary.
B-5 to 15 inches, dark yellowish-brown (10YR 3/4) silty clay loam:
weak, medium, subangular blocky structure: firm, slightly
sticky and slightly plastic; few fine roots: very strongly acid:
few, fine, partly weathered rock fragments: worm activity:
clear, smooth boundary.


Coto arenoso arcilloso 16mico, 2 a 5 porciento de declive
(CvB).-Este suelo esti en las areas calizas. Tiene un perfil
similar al descrito como representative de la series, pero la
capa superficial es arenosa arcillosa 16mica, en lugar de arcil-
losa. Este suelo ha sido menos afectado por la erosi6n lami-
nar que Coto arcilloso, 2 a 5 porciento de declive, erodado.
Tiene una capa superficial parda o parda oscura, de textura
arenosa arcillosa 16mica, de 6 a 8 pulgadas de espesor, y un
subsuelo grueso, de color pardo fuerte. La capacidad de
retenci6n de humedad es moderada, y la fertilidad es medi-
ana. La erosion es un peligro.
Este suelo se presta para cosechas de cultivo limpio. Se
ha usado mayormente para vegetables y para papayas (fig. 3),
pero parte del cuerdaje esti en cania de azlicar y en pastos
nativos. Algunas areas estin bajo riego. El suelo es de facil
laboreo. El declive, y el peligro de erosi6n son limitaciones.
Pricticas de manejo moderadas, que son de ficil aplicaci6n,
se necesitan para prevenir el deterioro del suelo cuando se
cultivan estas areas. Las cosechas responded bien a la apli-
caci6n de abono. (Unidad de capacidad IIe-3; no esti en un
grupo de bosques)

Serie Cuchillas
La series Cuchillas consiste de suelos moderadamente
profundos, de buen desagiie, que son muy fuertemente dci-
dos y moderadamente permeables. Estos suelos se han for-
mado en material, residuales meteorizados de rocas
volcinicas, en areas de much lluvia y a alturas mayores de
750 metros. El declive varia desde 20 hasta 60 porciento. La
temperature annual a una profundidad de 20 pulgadas es
menor de 72 F. El clima es htmedo. La lluvia es de 90 hasta
100 pulgadas, y la temperature varia desde 72 hasta 760 F.
En un perfil representative la capa superficial es pardo-
oscura, muy fuertemente icida, de textura limo arcilloso
16mica y de alrededor de 5 pulgadas de espesor. El subsue-
lo, hasta una profundidad de 15 pulgadas, es pardo amarillo-
so oscuro, muy fuertemente acido, firme, levemente pegajo-
so y levemente plistico, de textura limo arcilloso 16mica. El
substrato consiste de rocas volcinicas altamente meteoriza-
das, levemente Acidas. Bajo este substrato esta la roca con-
solidada a una profundidad de 26 pulgadas.
La mayor parte del cuerdaje esta en bosques brefiosos y
en pastos brefiosos. Algunos acres estan en caf6.
Perfil representative de Cuchillas limo arcilloso 16mico,
20 a 60 porciento de declive, 12.8 kil6metros al sureste del
pueblo de Maricao, 400 metros al sur en un camino de tierra
del marcador de kil6metro 2.3, en la carretera no. 374, y 6
metros al este del camino de tierra.
Ap-0 a 5 pulgadas, pardo oscuro (10YR 3/3) limo arcilloso 16mico;
estructura granular, moderadamente fina y median; consis-
tencia firme, levemente pegajosa, levemente plastica; presen-
cia de raicillas, abundantes; algunos fragments finos de roca
meteorizada: bien fuertemente acido: actividad de gusanos
de tierra; limited claro liso.
B-5 a 15 pulgadas, pardo-amarillento oscuro (10YR 3/4) limo arcillo-
so l6mico; estructura bloque subangular d6bil median; con-
sistencia firme, levemente pegajosa, levemente plistica; pre-
sencia de raicillas, algunas; bien fuertemente Acido; algunos
fragments finos de roca parcialmente meteorizados; activi-
dad de gusanos de tierra; limited claro liso.






SOIL SURVEY


Figure 3.-Papaya grown on Coto sandy cay loam, 2 to 5 percent slopes.


C-15 to 26 inches, highly weathered volcanic rock and loam; slightly
acid.
R-26 inches +, semiconsolidated volcanic rock.

The solum ranges from 10 to 20 inches in thickness, and the depth to
semiconsolidated rock ranges from 20 to 36 inches. The A horizon has
a hue of 10YR, a value of 3 and 4, and a chroma of 2 and 3. The B hori-
zon has a hue of 10YR, a value of 3 and 4, and a chroma of 4 and high-
er, and in places it has a few faint gray mottles as a result of the saprol-
ite. This horizon has weak subangular blocky structure that ranges
from fine to medium in class.
Cuchillas silty clay loam, 20 to 60 percent slopes (CwF).-
This soil is on strongly dissected side slopes and ridgetops in
the higher areas of the volcanic uplands. Runoff is rapid,
and erosion is a hazard. Included in mapping were small
spots of Maricao clay.


Figure 3.-Papaya crescendo en Coto arenoso arcMilo ico, 2 a 5 perride
to de deliver.


C-15 a 26 pulgadas, roca volcinica bien meteorizada: 16mica; ligera-
mente acida.
R-26 pulgadas +, roca volcinica semi-consolidada.
El solum varia desde 10 hasta 20 pulgadas en espesor. y la profundi-
dad a la roca semi-consolidada varia desde 20 hasta 36 pulgadas. El
horizonte A tiene matiz de 10YR, valores de 3 y 4, y cromas de 2 y 3.
El horizonte B tiene matiz de 10YR, valores de 3 y 4. y cromas de 4 y
mis alto, y en algunos sitios tiene algunas manchas d6biles grises
como resultado del color del saprolito. Este horizonte tiene estructura
debil subangular en bloques que varia desde final a median en clase.
Cuchillas limo arcilloso 16mico, 20 a 60 porciento de deceive
(CwF).-Este suelo esti en laderas y cumbres fuertemente
bisectadas en las areas mis altas de las alturas volcinicas.
El escurrimiento es rApido, y la erosion es un peligro. Se
incluyen algunas areas de Maricao arcilloso.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


This soil is not suitable for cultivation. Its use is restricted
mainly to grazing, woodland, or wildlife habitat. Most of the
acreage is in brush and abandoned coffee, but a few acres
are in pasture that has low carrying capacity. Slope, runoff,
and hazard of erosion are severe limitations that cannot be
corrected. The improvement of pasture or range by such
practices as liming, fertilizing, seeding, and controlling wa-
ter is not practical, because the characteristics of the soil,
such as slope, are not favorable. If the soil is used for graz-
ing, care should be taken to avoid overgrazing the pasture
so that the soil is maintained and adjacent areas are protect-
ed. (Capability unit VIIe-12; woodland groups 2d2, 2d3)




Daguey Series
The Daguey series consists of deep, well-drained soils
that are very strongly acid and moderately permeable.
These soils formed in residual material weathered from vol-
canic rocks. The slope ranges from 12 to 40 percent. The
climate is humid. Rainfall amounts to 70 to 90 inches, and
the annual temperature ranges from 720 to 790 F.

In a representative profile the surface layer is reddish-
brown, strongly acid clay. The subsoil, to a depth of about
38 inches, consists of red firm, slightly sticky and plastic
clay and silty clay. The substratum is thick, very strongly
acid, friable, nonsticky and slightly plastic silty clay varie-
gated with red, dark red, yellowish brown, and very pale
brown.

These soils have been used for coffee, pasture, and a wide
variety of subsistence crops for many years.
Representative profile of Daguey clay, 12 to 20 percent
slopes, eroded, 3.2 kilometers north of the town of Anasco,
400 meters on trail from kilometer marker 11.0 on Highway
No. 110, 100 feet south of the trail.

Ap-O to 6 inches, reddish-brown (5YR 4/3) clay; moderate, fine and
medium, granular structure; friable, slightly sticky and plas-
tic; many tine roots; strongly acid; abrupt, smooth boundary.
B21t-6 to 13 inches, red (2.5YR 4/6) clay; moderate, fine and medi-
um, subangular blocky structure; very firm, slightly sticky
and plastic; common fine roots; few fine pores; thick patchy
clay films; very strongly acid; clear, smooth boundary.

B22t-13 to 19 inches, red (2.5YR 4/8) clay; moderate, medium, sub-
angular blocky structure; firm, slightly sticky and slightly
plastic; common fine roots; few fine pores; thick patchy clay
films; very strongly acid; gradual, smooth boundary.
B23t-19 to 32 inches, red (10YR 4/6) clay; weak, fine, angular blocky
structure; friable, slightly sticky and plastic; few fine roots;
common fine pores; thin patchy clay films; very strongly acid;
gradual, smooth boundary.


Este suelo no se presta para cosechas de cultivo limpio.
Su uso esta restrict mayormente a pastoreo, a bosques o
habitat de vida silvestre. La mayor parte del cuerdaje esti
en brefiales y en caf6 abandonado, pero algunos acres estin
en pastos de baja productividad. El declive, el escurrimien-
to, y el peligro de erosi6n son limitaciones several que no
pueden ser corregidas. No es prActico el mejoramiento de
pastos o pastizales por prActicas tales como encalamiento,
abonamiento, siembra o el control de aguas debido a las
caracteristicas del suelo, tales como declive, que no son
favorables. Si el suelo se usare para pastoreo, es precise
tener cuidado de evitar el sobre pastoreo para protejer el
suelo y las areas adyacentes. (Unidad de capacidad VIIe-12;
grupos de bosques 2d2, 2d3)


Serie Daguey
La series Daguey consiste de suelos profundos, de buen
desagiie, que son muy fuertemente Acidos y moderada-
mente permeable. Estos suelos se han formado en materi-
ales residuales meteorizados de rocas volcanicas. El declive
varia desde 12 hasta 40 porciento. El clima es hfimedo. La
lluvia es desde 70 hasta 90 pulgadas, y la temperature annual
varia desde 720 hasta 790 F.
En un perfil representative la capa superficial es pardo
rojiza, fuertemente icida, de textura arcillosa. El subsuelo
hasta una profundidad de 38 pulgadas, es rojo, firme, ligera-
mente pegajoso, ligeramente plastico, de textura arcillosa y
limo-arcillosa. El substrato es grueso, muy fuertemente Aci-
do, friable, no pegajoso y ligeramente plastico, de textura
limo-arcillosa, veteado con rojo, rojo oscuro, pardo amaril-
loso y pardo muy pilido.
Estos suelos han estado en caf6, pastos, y una variedad
de cosechas para uso en la finca por muchos afios.
Perfil representative de Daguey arcilloso, 12 a 20 porcien-
to de declive, erodado, 3.2 kil6metros al norte del pueblo de
Afiasco, 400 metros en un camino desde el marcador de
kil6metros 11.0 en la carretera no. 110, 100 pies al sur de
este camino.
Ap-0 a 6 pulgadas, pardo rojizo (5YR 4/3) arcilloso; estructura granu-
lar moderada fina y median; consistencia friable, levemente
pegajosa, plfstica; presencia de raicillas, abundantes; fuerte-
mente acido; limited abrupto liso.
B21t-6 a 13 pulgadas, rojo (2.5YR 4/6) arcilloso; estructura bloque
subangular, moderada fina y median; consistencia bien
firme, levemente pegajosa, plAstica; presencia de raicillas,
comunes; algunos poros finos; mosaicos revestidos con pel-
iculas de arcilla gruesas; bien fuertemente Acidos; limited claro
liso.
B22t-13 a 19 pulgadas, rojo (2.5YR 4/8) arcilloso; estructura bloque
subangular moderada fina; consistencia firme, levemente
pegajosa, levemente plAstica; presencia de raicillas finas; al-
gunos poros finos; mosaicos revestidos con peliculas de arcil-
la gruesos; bien fuertemente Acido; limited gradual liso.
B23t-19 a 32 pulgadas, rojo (10R 4/6) arcilloso; estructura bloque
subangular d6bil fina; consistencia friable, levemente pega-
josa, plistica; presencia de raicillas, algunas; poros comunes
y finos; mosaicos revestidos con peliculas de arcilla finas;
bien fuertemente Acido; limited gradual liso.






SOIL SURVEY


B3-32 to 38 inches, silty clay that is red (10YR 4/6) when rubbed, 50
percent of the material is saprolite; weak, fine, angular
blocky structure; very friable, nonsticky and slightly plastic;
very few fine roots; common fine pores; very thin patchy clay
films in cracks and on faces; very strongly acid; gradual,
wavy boundary.
C-38 to 60 inches +, silty clay (saprolite) variegated with red (2.5YR
4/6),dark red (7.5R 3/6), very pale brown (10YR 7/4), and
yellowish brown (10YR 5/8); red (10R 4/6) rubbed; massive;
very friable, nonsticky and slightly plastic; very few fine
roots; very strongly acid; highly weathered volcanic rock;
original rock structure is visible; weathered rock has a low
density and can be crushed between the fingers.

These soils range from strongly acid to very strongly acid through-
out the profile. The solum ranges from 24 to 44 inches in thickness.
The A horizon has a hue of 7.5YR and 5YR, a value of 4 and 5, and a
chroma of 3 and 4. The B2t horizon has a hue of 5YR to 10R, a value of
4, and a chroma of 4 to 8. The clay films in the upper part of the B hori-
zon range from thick and continuous to thin and patchy. The structure
in the B21t and B22t horizons range from moderate to strong in grade
and from fine to medium in class. Saprolite makes up 40 to 60 percent
of the material in the B3 horizon.


Daguey clay, 12 to 20 percent slopes, eroded (DaD2).-
This soil is on side slopes, foot slopes, and rounded hilltops
of the volcanic uplands. It has the profile described as repre-
sentative of the series. Runoff is medium, and erosion is a
hazard. The available water capacity is high, and fertility is
medium.
Included in mapping were areas of Consumo clay and
Humatas clay. These areas make up 10 percent or less of the
acreage.
This soil is suited to cultivated crops. It has been used
mainly for subsistence crops, but some areas are in sugar-
cane, coffee, and pasture. Its use for clean cultivated crops
is somewhat restricted.This soil is somewhat difficult to
work. Slope, runoff, past erosion, and hazard of further
erosion are limitations. Careful management practices are
needed to prevent deterioration of the soil in cultivated
areas. Crops respond well to heavy applications of lime and
fertilizer. (Capability unit IIIe-1; woodland groups lol, lo2,
lo3, lo4)

Daguey clay, 20 to 40 percent slopes, eroded (DaE2).-This
soil is on side slopes and hilltops throughout the volcanic
uplands. It has a profile similar to the one described as rep-
resentative of the series, but the combined surface layer and
subsoil are slightly thinner. This soil has been affected more
by erosion than Daguey clay, 12 to 20 percent slopes erod-
ed. It has a surface layer of reddish-brown clay 4 to 6 inches
thick and a red, slightly sticky and plastic clayey subsoil 16
to 34 inches thick. The surface layer consists mainly of soil
material from the original subsoil as a result of sheet ero-
sion. Runoff is rapid, and erosion is a hazard.


Included in mapping were areas of Humatas clay and
Consumo clay. These areas make up 15 percent or less of
the acreage.


B3-32 a 38 pulgadas, rojo (10R 4/6) al frotarse; limo arcilloso; el 50
porciento del volume de este horizonte consiste de saproli-
to; estructura bloque angular d6bil fina; consistencia bien
friable, no pegajosa, levemente plistica; presencia de raicil-
las, muy pocas; poros comunes y finos; mosaicos revestidos
con peliculas de arcilla, bien delgadas; en grietas y pianos
normales; bien fuertemente icido; limited gradual ondulante.
C-38 a 60 pulgadas +, veteado en colors rojo (2.5YR 4/6), rojo oscu-
ro (7.5R 3/6), pardo bien tenue (10YR 7/4), pardo amarillento
(10YR 5/8) derivados del saprolito, color al frotarse es rojo
(10R 4/6), limo arcilloso; macisa; consistencia bien friable, no
pegajosa, levemente plastica; presencia de raicillas, muy po-
cas; bien fuertemente acido; roca volcanica bien meteoriza-
da; la estructura de la roca originaria; la roca meteorizada es
poco densa y puede ser desmenuzada al presionarla entire los
dedos.
Estos suelos varian desde fuertemente Acidos hasta muy fuerte-
mente Acidos a traves de todo el perfil. El solum varia desde 24 hasta
44 pulgadas en espesor. El horizonte A tiene matices de 7.5YR y 5YR,
valores de 4 y 5 y cromas de 3 y 4. El horizonte B2t tiene matices de
5YR hasta 10R, valor de 4 y cromas de 4 hasta 8. Las peliculas de arcil-
las en la parte superior del horizonte B varian desde gruesas y contin-
uas hasta delgadas y descontinuas. La estructura en los horizontes
B21t y B22t varian desde moderada hasta fuerte en grado y desde fina
hasta median en clase. El saprolito comprende desde el 40 hasta el 60
porciento del material en el horizonte B3.

Daguey arcilloso, 12 a 20 porciento de declive, erodado
(DaD2).-Este suelo estf en las laderas, faldas, y en las
cumbres redondeadas de las alturas volcinicas. Tiene el
perfil descrito como representative de la series. El escurri-
miento es median y la erosi6n es un peligro. La capacidad
de retenci6n de humedad es alta, y la fertilidad es median.
Se incluyen areas de Consumo arcilloso y de Humatas
arcilloso. Estas areas alcanzan hasta el 10 porciento o men-
os del cuerdaje total.
Este suelo se presta para cosechas de cultivo limpio. Se
ha usado mayormente para cosechas para el uso de la finca,
pero algunas areas estfn en caila de az6car, caf6 y pastos.
Su uso para cosechas de cultivo limpio es un tanto restrict.
El laboreo en este suelo es un tanto dificil. El declive, escur-
rimiento, erosi6n pasada y el peligro de future erosi6n son
limitaciones. Se requieren prActicas de manejo cuidadosas
para prevenir el deterioro del suelo cuando se cultiva. Las
cosechas responded bien a aplicaciones fuertes de cal, y
abonos. (Unidad de capacidad IIIe-1; Grupos de bosques
lol, lo2, lo3, lo4)
Daguey arcilloso, 20 a 40 porciento de declive, erodado
(DaE2).-Este suelo esti en las laderas y en las cumbres de
las alturas volcanicas. Tiene un perfil similar al descrito
como representative de la series, pero la capa superficial y el
subsuelo son mis delgados. Este suelo ha sido mis afectado
por la erosi6n que Daguey arcilloso, 12 a 20 porciento de
declive, erodado. Tiene una capa superficial color pardo ro-
jizo, de textura arcillosa, de 4 a 6 pulgadas de espesor y un
subsuelo rojo, levemente pegajoso y plistico, de textura
arcillosa, de 16 a 34 pulgadas de espesor. La capa superficial
consiste mayormente de material de suelo que original-
mente era el subsuelo, como un resultado de la erosi6n lami-
nar. El escurrimiento es ripido, y la erosi6n es un peligro.
Se incluyen areas de Humatas arcilloso y Consumo arcil-
loso. Estas areas alcanzan al 15 porciento o menos de cuer-
daje total.







MAYAGUEZ AREA OF WESTERN PUERTO RICO


This soil is suitable for occasional cultivation but not for
regular cultivation. It has been used mainly for clean-tilled
crops, but some areas are in coffee and pasture. Slope, run-
off, past erosion, and hazard of further erosion are very
severe limitations. Special management practices are need-
ed in cultivated areas. (Capability unit IVe-1; woodland
groups lol, lo2, lo3, lo4)


Delicias Series
The Delicias series consists of deep, well-drained soils
that are strongly acid and moderately permeable. These
soils formed in colluvial and alluvial sediments downslope
from the serpentinite uplands. They are easily recognized
because they have dark-red colors and fragments and con-
cretions of ironstone throughout the profile. The slope
ranges from 5 to 20 percent. The climate is subhumid to
humid. Rainfall amounts to 60 to 80 inches, and the annual
temperature ranges from 770 to 790 F.

In a representative profile the surface layer is dark red-
dish-brown, strongly acid clay about 6 inches thick. The
subsoil, to a depth of more than 60 inches, consists of dark-
red, strongly acid, friable, nonsticky and slightly plastic
clay. There are many, fine and medium fragments and con-
cretions of ironstone in the surface layer and subsoil.


Most of the acreage has been planted to sugarcane for
many years. A few areas are in native pasture.

Representative profile of Delicias clay, 5 to 20 percent
slopes, eroded, 4.8 kilometers north of the town of Cabo
Rojo, 0.5 kilometer south of dirt road from kilometer mark-
er 5.6 on Highway No. 311, 15 meters east of fence.

Ap-O to 6 inches, dark reddish-brown (2.5YR 3/4) clay; moderate,
medium, granular structure; friable, slightly sticky and plas-
tic; many fine roots; many fine and medium ironstone frag-
ments and concretions; strongly acid; clear, smooth bounda-
ry.
B21-6 to 12 inches, dark-red (10R 3/6) clay; moderate, medium, gran-
ular structure; friable, sticky and plastic; common fine roots;
many fine and medium ironstone fragments and concretions;
strongly acid; clear, smooth boundary.
B22-12 to 22 inches, dark-red (10R 3/6) clay; weak, medium, suban-
gular blocky structure parting to weak granular; friable, non-
sticky and slightly plastic; common fine roots; common fine
pores; common fine and medium ironstone fragments and
concretions; strongly acid; gradual, wavy boundary.
B23-22 to 34 inches, dark-red (10R 3/6) clay; weak, fine, angular
blocky structure; firm, nonsticky and slightly plastic; few fine
roots; many fine pores; many fine and medium ironstone frag-
ments and concretions; strongly acid; gradual, wavy bounda-
ry.
B24-34 to 45 inches, dark-red (2.5YR 3/6) clay; weak, fine, angular
blocky structure; friable, nonsticky and slightly plastic; few
fine roots; many fine pores; common fine and medium iron-
stone fragments and concretions; strongly acid; gradual,
wavy boundary.
B25-45 to 60 inches +, dark-red (2.5YR 3/6) clay; weak, fine, angular
blocky structure; friable, nonsticky and nonplastic; very few
fine roots; common fine iron concretions; strongly acid.


Este suelo se presta para cultivo occasional. Se ha usado
mayormente para cosechas de cultivo limpio, pero algunas
areas estin en caf6 y pastos. El declive, el escurrimiento, la
erosi6n pasada y el peligro de erosi6n future son limita-
ciones muy several. Se requieren pricticas de manejo muy
cuidadosas y especiales cuando se cultivan estas areas. (Un-
idad de capacidad IVe-1; grupos de bosques lol, lo2, lo3,
lo4)

Serie Delicias
La series Delicias consiste de suelos profundos, de buen
desagiie, fuertemente acidos y de permeabilidad moderada.
Estos suelos se han formado en sedimentos coluviales y
aluviales, en las faldas de las alturas de roca serpentinita.
Estos suelos son ffciles de identificar por sus colors rojo
oscuros y por los fragments y concreciones de hierro a
trav6s de todo el perfil. El declive varia desde 5 hasta 20
porciento. El clima es desde subh6medo hasta h6medo. La
lluvia es desde 60 hasta 80 pulgadas, y la temperature annual
varia desde 770 hasta 790 F.
En un perfil representative la capa superficial es pardo
rojiza oscura, fuertemente icida, de textura arcillosa, de
alrededor de 6 pulgadas de espesor. El subsuelo hasta una
profundidad de 60 pulgadas, es rojo oscuro, fuertemente
acido, permeable, no pegajoso y no plistico, de textura ar-
cillosa. Hay muchos fragments y concreciones de hierro
que son finos y medianos en la capa superficial y en el sub-
suelo.
La mayor Parte del cuerdaje ha sido sembrada de cafia de
azucar por muchos afios. Algunas areas estan en pastos na-
tivos.
Perfil representative de Delicias arcilloso, 5 a 20 porcien-
to de declive, erodado, 4.8 kil6metros al norte del pueblo de
Cabo Rojo, 0.5 kil6metros al sur en un camino de tierra,
desde el marcador de kil6metro 5.6, en la carretera no. 311,
15 metros al este de la cerca.
Ap-0 a 6 pulgadas, pardo rojizo oscuro (2.5YR 3/4) arcilloso; estruc-
tura granular moderada median; consistencia friable, leve-
mente pegajosa, plistica; presencia de raicillas, abundantes;
abundancia de fragments y concreciones de hierro, finas y
medianas; fuertemente Acido; limited claro liso.
B21-6 a 12 pulgadas, rojo oscuro (10R 3/6) arcilloso; estructura gran-
ular moderada median; consistencia friable, pegajosa,
plistica; presencia de raicillas, comunes; abundancia de frag-
mentos y concreciones de hierro finos y medianos; fuerte-
mente acidos; limited claro liso.
B22-12 a 22 pulgadas, rojo oscuro (10R 3/6) arcilloso; estructura re-
partida entire bloque subangular d6bil median y granular
d6bil; consistencia friable, no pegajosa, levemente plistica;
presencia de raicillas, comunes; poros finos y comunes; pre-
sencia comin de fragments y concreciones de hierro finos y
medianos; fuertemente Acido; limited gradual ondulante.
B23-22 a 34 pulgadas, rojo oscuro (10R 3/6) arcilloso; estructura
bloque angular d6bil fina; consistencia firme, no pegajosa,
levemente plastica; presencia de algunas raicillas; abundan-
cia de poros finos; abundancia de fragments y concreciones
de hierro finas y abundantes; fuertemente acido; limited grad-
ual ondulante.
B24-34 a 45 pulgadas, rojo oscuro (2.5YR 3/6) arcilloso; estructura
bloque angular d6bil fina; consistencia friable, no pegajosa;
levemente plastica; presencia de algunas raicillas, abundan-
cia de poros finos; presencia comin de fragmento y concre-
ciones de hierro finas y medianas; fuertemente Acido; limited
gradual ondulante.
B25-45 a 60 pulgadas +, rojo oscuro (2.5YR 3/6) arcilloso; estruc-
tura bloque angular d6bil fina; consistencia friable, no pega-
josa, no plistica; presencia de muy pocas raicillas; presencia
comin de concreciones de hierro; fuertemente Acido.






SOIL SURVEY


Fragments and concretions of ironstone throughout the profile range
from common to many in abundance. Reaction ranges from strongly
acid to very strongly acid. The A horizon ranges from 4 to 8 inches in
thickness and has a hue of 10YR and 2.5YR, a value of 3 and 4, and a
chroma of 3 and higher. The A horizon and the upper part of the B ho-
rizon are slightly sticky and plastic, and the lower part of the B horizon
is nonsticky and slightly plastic. The B2 horizon has a hue of 10R, a
value of 3 and 4, and a chroma of 6 or higher.

Delicias clay, 5 to 20 percent slopes, eroded (DcD2).-This
soil is on foot slopes and low rounded hills downslope from
the serpentinite uplands. Runoff is medium, and erosion is a
hazard. The available water capacity is moderate, and fertil-
ity is low.

Included in mapping were small areas of Guanajibo loam
and Nipe clay. These areas make up 5 percent or less of the
acreage.
This soil is suited to cultivated crops, but its use for clean
cultivation is restricted. Most areas are in sugarcane, but
small areas are in pasture and brush. This soil is easily
worked. Slope, runoff, past erosion, and hazard of further
erosion are severe limitations. Special management prac-
tices that include heavy applications of lime and fertilizer
are needed. (Capability unit IIIe-14; not in a woodland
group)


Descalabrado Series
The Descalabrado series consists of shallow, well-drained
soils that are slightly acid and moderately permeable. These
soils are on low hills and side slopes. They formed in residu-
al material weathered from basic volcanic rock. The slope
ranges from 5 to 60 percent. The climate is semiarid. Rain-
fall amounts to 30 to 40 inches, and the temperature ranges
from 78 to 81 F.

In a representative profile the surface layer is dark yel-
lowish-brown, slightly acid clay loam about 7 inches thick.
This layer contains a few fine pebbles. The subsoil, to a
depth of about 15 inches, is dark-brown, slightly acid, firm,
slightly sticky and slightly plastic silty clay. Partly weath-
ered parent material makes up 30 to 40 percent of this layer.
The substratum is a thin layer of weathered and partly
weathered volcanic rock that is underlain by hard volcanic
rock. Depth to semiconsolidated volcanic rock is 20 inches.


The acreage is mainly in native pasture and brush, but the
lower slopes are periodically planted to subsistence crops.

Representative profile of Descalabrado clay loam, 20 to
60 percent slopes, 6.4 kilometers southwest of San German,
1.6 kilometers south on dirt road from kilometer marker 3.6
on Highway No. 314, 15 meters east of dirt road.

Ap-0 to 7 inches, dark yellowish-brown (10YR 3/4) clay loam; weak,
medium granular structure; firm, slightly sticky and slightly
plastic; many fine roots; few fine pores; few line pebbles;
slightly acid; clear, smooth boundary.


Los fragments y concreciones de hierro a traves del perfil varian
desde comunes hasta muchas en abundancia. La reacci6n varia desde
fuertemente icido hasta muy fuertemente icido. El horizonte A varia
desde 4 hasta 8 pulgadas en espesor y tiene matices de 10YR y 2.5YR,
valores de 3 y 4, y cromas de 3 y mis altos. El horizonte A y la parte
superior del horizonte B tienen consistencia que es levemente pega-
josa y plistica, y la parte inferior del horizonte B no pegajosa y ligera-
mente plistica. El horizonte B2 tiene matices de 10R y 2.5YR, valores
de 3 y 4, y cromas de 6 y mis altas.
Delicias arcilloso, 5 a 20 porciento de declive, erodado
(DcD2).-' Este suelo esti en las faldas y en montes bajos
redondeados mis abajo de las alturas de serpentinita. El
escurrimiento es median, y la erosi6n es un peligro. La
capacidad de retenci6n de agua es moderada, y la fertilidad
es baja.
Se incluyen areas pequefias de Guanajibo 16mico y de
Nipe arcilloso. Estas areas alcanzan hasta el 5 porciento o
menos del cuerdaje total.
Este suelo se presta para cosechas de cultivo limpio, pero
su uso para cultivo limpio es restrict. La mayor parte de las
areas estin en caiia de azucar, pero hay pequenias areas que
estin en pastos y brefiales. Este suelo es de ficil laboreo. El
declive, el escurrimiento, la erosi6n pasada, y el peligro de
erosi6n future son limitaciones several. Se require pricti-
cas especiales de manejo que incluyen aplicaciones fuerte
de cal y abonos. (Unidad de capacidad IIIe-14; no esta en un
grupo de bosques)

Serie Descalabrado
La series Descalabrado consiste de suelos poco profun-
dos, de buen desagiie, que son ligeramente fcidos y modera-
damente permeables. Estos suelos estfn en montes bajos y
en laderas. Se han formado en material residual meteoriza-
do de rocas volcinicas bisicas. El declive varia desde 5 has-
ta 60 porciento. El clima es semi-irido. La lluvia es de 30
hasta 40 pulgadas, y la temperature varia desde 780 hasta 81
F.
En un perfil representative la capa superficial es pardo
amarilloso oscuro, ligeramente acido, de textura arcilloso-
16mica y de alrededor de 7 pulgadas de espesor. Esta capa
tiene algunos guijarros finos. El subsuelo, hasta una profun-
didad de 15 pulgadas, es pardo oscuro, ligeramente acido,
firme, levemente pegajoso y levemente plistico, de textura
limo-arcillosa. El material padre que esta parcialmente me-
teorizado alcanza hasta el 30 o el 40 porciento de 6sta capa.
El substrato es una capa fina de roca volcAncia meteorizada
y parcialmente meteorizada. Bajo esta capa esti la roca
volcanica dura. La profundidad a la roca volcfnica semi-
consolidada es de 20 pulgadas.
El cuerdaje esta mayormente en pastos natives y en breii-
ales, pero las parties inferiores de las laderas estan sembra-
das de cosechas para uso en la finca.
Perfil representative de Descalabrado arcilloso 16mico, 20
a 60 porciento de declive, 6.4 kil6metros al suroeste de San
German, 1.6 kil6metros al sur en un camino de tierra desde
el marcador de kil6metros 3.6 de la carretera 314, y 15 me-
tros al este del camino de tierra.
Ap-0 a 7 pulgadas, pardo amarillento oscuro (10YR 3/4) arcilloso
16mico; estructura granular d6bil median; consistencia
firme, levemente pegajoso y levemente plistico; abundancia
de raicillas; algunos poros finos; presencia de alguna grava
fina; ligeramente Acido; limited claro liso.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


B-7 to 15 inches, dark-brown (10YR 4/3) silty clay; few, fine, yellow
and white specks; weak, medium to coarse, subangular
blocky structure; firm, slightly sticky and slightly plastic; few
fine roots; common fine pores; few, thin, patchy clay films;
few wormholes; slightly acid; 30 to 40 percent of material is
saprolite; clear, smooth boundary.

C-15 to 20 inches, silty clay (saprolite), that is mixed dark yellowish
brown (2.5YR 3/4), dark brown (10YR 4/3), brownish yellow
(10YR 6/8), pale yellow (5Y 7/3), and reddish yellow (7.5 YR
6/8); common black coatings; massive; firm, slightly sticky
and slightly plastic; many fine pebbles; slightly acid.

R-20 inches +, hard, semiconsolidated tuffaceous rock.
Depth to semiconsolidated rock ranges from 12 to 20 inches. The
solum ranges from 10 to 18 inches in thickness. Reaction ranges from
medium acid to slightly acid throughout the profile. The Ap horizon
ranges from very dark-brown (10YR 2/2) to dark brown (10YR 3/3) and
very dark grayish brown (10YR 3/2) in color. The B horizon ranges
from dark brown (10YR 4/3) to brown (10YR 5/3) or dark yellowish
brown (10YR 4/4) in color. It has weak subangular blocky structure
that ranges from medium to coarse in class. In places it has patchy clay
films.

Descalabrado clay loam, 5 to 12 percent slopes (DeC).-
This soil is on foot slopes and low hills. It has a profile simi-
lar to the one described as representative of the series, but
the surface layer is slightly thicker and the depth to rock is
greater. This soil has less slope than Descalabrado clay
oam, 20 to 60 percent slopes, and has been less affected by
erosion. It is fertile. The available water capacity is moder-
ate. Erosion is a hazard.

Included in mapping were some areas of Jacana clay.
These areas make up 5 percent or less of the acreage.
Most of the acreage is in native pasture and low brush,
but some areas are in pigeonpeas and corn. The soil is easily
worked. The limitations to the use of this soil for clean-cul-
tivated crops are very severe. Slope, shallowness to bed-
rock, and hazard of erosion are limitations. The low rainfall
is also unfavorable. The choice of plants is restricted, and
very careful management is needed. Areas that are not irri-
gated can be used for suitable cultivated crops during years
when rainfall is above average, but unirrigated crops fail in
years when rainfall is below average. (Capability unit IVs-
16; not in a woodland group)


Descalabrado clay loam, 12 to 20 percent slopes (DeD).-
This soil is on foot slopes, side slopes, and rounded hilltops
of the volcanic uplands. It has a profile similar to the one
described as representative of the series, but the profile is
slightly thicker. This soil is fertile. Runoff is medium, and
erosion is a severe hazard. The available water capacity is
moderate.
Included in mapping were small severely eroded areas
where material from the substratum is exposed. These areas
make up 5 percent or less of the acreage.


B-7 a 15 pulgadas, pardo oscuro (10YR 4/3) limo arcilloso; salpicado
con algunas manchas amarillas y blancas finas; estructura
bloque subangular d6bil, entire median y gruesa; consisten-
cia firme, ligeramente pegajosa, ligeramente plistica; presen-
cia de algunas raicillas; poros comunes y finos; algunos mo-
saicos revestidos de peliculas de arcilla finas; algunas cavi-
dades de gusanos de la tierra; ligeramente acido; contenido
de saprolito entire 30 y 40 porciento; limited claro liso.
C-15 a 20 pulgadas, saprolito de colors mixtos pardo amarillento
oscuro (10YR 3/4), pardo oscuro (10YR 4/3), amarillo pardo
(10YR 6/8), amarillo tenue (5Y 7/3) y amarillo rojizo (7.5YR
6/8); limo arcilloso; con revestimientos oscuros, comunes;
macisa; consistencia firme, levemente pegajosa, y levemente
plastica; abundancia de grava fina; ligeramente Acido.
R-20 pulgadas +, roca tufacea dura semi-consolidada.
La profundidad a la roca semi-consolidada varia desde 12 hasta 20
pulgadas. El solum varia desde 10 hasta 18 pulgadas en espesor. La
reacci6n varia desde medianamente icida hasta levemente Acida a
trav6s de todo el perfil. El horizonte Ap varia desde pardo muy oscuro
(10YR 2/2) hasta pardo oscuro (10YR 3/3) y pardo grisiceo muy oscu-
ro (10YR 3/2) en color. El horizonte B varia desde pardo oscuro (10YR
4/3) hasta pardo (10YR 5/3) o pardo amarilloso oscuro (10YR 4/4) en
color. Tiene una estructura d6bil subangular en bloque que varia desde
median hasta gruesa en clase. En algunos sitios tiene peliculas de ar-
cillas descontinuas.
Descalabrado arcilloso lomico, 5 a 12 porciento de declive
(DeC).-Este suelo esta en las faldas y en montes bajos.
Tiene un perfil similar al descrito como representative de la
series, pero la capa superficial es ligeramente mis gruesa y la
profundidad a la roca es mayor. Este suelo tiene menos de-
clive que Descalabrado arcilloso 16mico, 20 a 60 porciento
de declive, y ha sido menos afectado por la erosi6n. Es
f6rtil. La capacidad de retenci6n de humedad es moderada.
La erosion es un peligro.
Se incluyen algunas areas de Jicana arcilloso. Estas areas
comprenden el 5 porciento o menos del cuerdaje total.
La mayor parte del cuerdaje esti es pastos natives y en
brefiales bajos, pero algunas areas estin en gandules y en
maiz. El suelo es de ficil laboreo. Las limitaciones para el
uso de este suelo para cosechas de cultivo limpio son muy
several. El declive, la poca profundidad a la roca, y el peli-
gro de erosion son limitaciones. Es desfavorable tambien la
poca cantidad de lluvia. La selecci6n de plants esti restric-
ta, y se require un manejo muy cuidadoso. Las areas que
no estan bajo riego pueden usarse para cosechas cultivadas
adaptadas durante los afios cuando la lluvia es mayor que el
promedio, pero cuando la lluvia es bajo el promedio, las
cosechas no prosperan. (Unidad de capacidad IVs-16; no
esti en un grupo de bosques.)
Descalabrado arcilloso 16mico, 12 a 20 porciento de declive
(DeD).-Este suelo esti en las faldas, en las laderas, y en
las cumbres redondeadas de las alturas volcAnicas. Tiene un
perfil similar al descrito como representative de la series,
pero el perfil es un poquito mis grueso. Este suelo es f6rtil.
El escurrimiento es median, y la erosion es un peligro sev-
ero. La capacidad de retenci6n de agua es moderada.
Se incluyen areas severamente erodadas donde el materi-
al del substrato esti expuesto en la superficie. Estas areas
alcanzan al 5 porciento o menos del cuerdaje.






SOIL SURVEY


This soil is not suitable for cultivation. Its use is restricted
to pasture or range, woodland, or wildlife habitat. Slope,
runoff, hazard of erosion, and shallowness to bedrock are
limitations. The low rainfall is also unfavorable. The im-
provement of range or pasture by such practices as fertiliz-
ing, seeding, and using water control systems is practical. If
the soil is used for grazing, care should be taken to control
the stocking rate and avoid overgrazing the pasture. (Capa-
bility unit VIs-20; not in a woodland group)



Descalabrado clay loam, 20 to 60 percent slopes (DeF).-
This soil is on side slopes and narrow ridgetops on the vol-
canic uplands. It has the profile described as representative
of the series. Runoff is rapid, and erosion is a hazard.

Included in mapping were some areas of soils that are
similar except that they are calcareous throughout the pro-
file. Also included were some areas of shallow soils that
have dusky-red or reddish-gray colors inherited from the
parent material. All of these areas make up 15 percent or
less of the acreage.
This soil is not suitable for cultivation. Its use is restricted
mainly to grazing or wildlife habitat. It has been mainly in
pasture that has low-carrying capacity and brush. Slope,
runoff, hazard of erosion, and shallowness to bedrock are
severe limitations. The low rainfall is also unfavorable. If
the soil is used for grazing, care should be taken to control
the stocking rate so that overgrazing the pasture is avoided.
(Capability unit VIIs-8; not in a woodland group)



Dique Series
The Dique series consists of deep, nearly level, well-
drained soils that are medium acid and moderately permea-
ble. These soils are on natural levees or dikes near streams
and rivers. They formed in medium-textured sediments
washed from the volcanic and limestone hills. The climate is
humid. Rainfall amounts to 70 to 80 inches, and the annual
temperature ranges from 770 to 79 F.
In a representative profile the surface layer is dark gray-
ish-brown, medium acid silt loam about 6 inches thick. The
upper part of the subsoil is dark grayish brown, medium
acid, friable, slightly sticky and slightly plastic loam. The
lower part, to a depth of about 36 inches, is dark yellowish-
brown, medium acid, friable, slightly sticky and slightly
plastic silt loam. The substratum, to a depth of more than 5
feet, consists of dark yellowish-brown, medium acid, fria-
ble, slightly sticky and slightly plastic silt loam to loam.


Nearly all the acreage has been planted to sugarcane.

Representative profile of Dique silt loam, 4.8 kilometers
southeast of the town of Hormigueros, 122 meters northeast
of Eureka Sugar Mill, 31 meters north of the Rosario River,
46 meters west of farm road.


Este suelo no se presta para cosechas de cultivo limpio.
Su uso esti restrict a pastos y pastizales, bosques, o habi-
tat de vida silvestre. El declive, el escurrimiento, el peligro
de erosi6n y la poca profundidad a la roca son limitaciones.
La poca lluvia es tambi6n desfavorable. El mejoramiento de
pastizales y de pastos por practices tales como abonamien-
to, siembra, y el uso de sistema de control de agua es practi-
co. Si el suelo se usa para pastoreo, se debe tener cuidado
de controlar el nimero de animals para evitar el sobre pas-
toreo. (Unidad de capacidad VIs-20; no esti en un grupo de
bosques)

Descalabrado arcilloso lImico, 20 a 60 porciento de declive,
(DeF).-Este suelo esta en las laderas y en las cumbres es-
trechas de las alturas volcinicas. Tiene el perfil descrito
como representative de la series. El escurrimiento es rfpido
y la erosi6n es un peligro.
Se incluyen areas de suelos que son muy similares, excep-
to que son calcireos a trav6s de todo el perfil. Tambi6n se
incluyen algunas areas poco profundas que tienen color rojo
tenue o gris rojizo, cuyos colors provienen de la roca
madre. Todas estas areas alcanzan al 15 porciento o menos
del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esti restringido mayormente a pastoreo o habitat de
vida silvestre. Ha estado mayormente en pastos de baja
productividad y en brefiales. El declive, el escurrimiento, el
peligro de erosi6n, y la poca profundidad a la roca son limi-
taciones several. La poca lluvia es tambi6n desfavorable. Si
6ste suelo se usare para pastoreo, se debe tener much cui-
dado de controlar el nuimero de animals de manera que se
evite el sobre pastoreo. (Unidad de capacidad VIIs-8; no
esti en un grupo de bosques)

Serie Dique
La series Dique consiste de suelos profundos, casi llanos,
de buen desagiie, que son medianamente acidos y modera-
damente permeables. Estos suelos estin en diques naturales
a lo largo de las quebradas y rios. Se han formado en sedi-
mentos de textura median que han sido lavados de los
montes volcinicos y calizos. El clima es h6medo. La lluvia
alcanza a 70 u 80 pulgadas, y la temperature annual varia
desde 770 hasta 790 F.
En un perfil representative la capa superficial es pardo
grisicea oscura, medianamente icida de textura limoso-
16mica y alrededor de 6 pulgadas de espesor. La parte supe-
rior del subsuelo es pardo grisicea oscura, medianamente
Acida, friable, ligeramente pegajosa, y ligeramente plistica,
de textura 16mica. La parte inferior, hasta una profundidad
de 36 pulgadas, es pardo amarillosa oscura, medianamente
Acida, friable, ligeramente pegajosa y ligeramente plastica,
de textura limoso 16mica. El substrato, hasta una profundi-
dad de mis de 5 pies, es pardo amarilloso oscuro, mediana-
mente acido, friable, ligeramente pegajoso y ligeramente
plistico, de textura limosa 16mica hasta l6mica.
Casi todo el cuerdaje ha sido sembrado de caria de azfi-
car.
Perfil representative de Dique limoso 16mico, 4.8 kil6me-
tros al sureste del pueblo de Hormigueros, 122 metros al
noreste de la central azucarera Eureka, 31 metros al norte
del Rio Rosario, 46 metros al oeste de un camino de finca.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


Ap-0 to 6 inches, dark grayish-brown (10YR 4/2) silt loam; weak,
fine, granular structure; friable, slightly sticky and slightly
plastic; many fine roots; medium acid; clear, smooth bounda-
ry.
B2-6 to 12 inches, dark grayish-brown (10YR 4/2) loam; brown
(10YR 4/3) crushed; weak, fine, subangular blocky structure;
friable, slightly sticky and slightly plastic; common fine roots;
medium acid; clear, smooth boundary.
B3-12 to 36 inches, dark yellowish-brown (10YR 4/4) silt loam; weak,
fine, subangular blocky structure; friable, slightly sticky and
slightly plastic; common fine roots; medium acid; gradual,
smooth boundary.
C-36 to 60 inches +, dark yellowish-brown (10YR 4/4) loam; mas-
sive; friable, slightly sticky and slightly plastic; few fine
roots; medium acid.
The solum ranges from 20 to 40 inches in thickness. In places, there
are thin lenses of sand or coarser material at different depths in the
profile. The A and B horizons have a color hue of 10YR, a value of 4
and 5, and a chroma of 2 to 4. The B horizon has weak subangular
blocky structure that ranges from fine to medium in class. The B and C
horizons range from loam to silt loam in texture. The C horizon has a
color hue of 10YR and 7.5YR, and a value and a chroma of 4 to 6.

Dique silt loam (Du).-This is a nearly level soil that is on
flood plains adjacent to streams and rivers. It is fertile and
has moderate available water capacity. Erosion is a slight
hazard.
Included in mapping were areas of Toa silty clay loam and
Reilly gravelly loam. These areas make up 5 percent or less
of the acreage.
This soil is suited to many plants and can be used safely
for cultivated crops. It has been mainly in sugarcane, but
small areas are in pasture, cutgrass, and subsistence crops.
The soil is easily worked. Only ordinary management prac-
tices are needed. (Capability unit I-1; not in a woodland
group)



Espinal Series
The Espinal series consists of deep, nearly level, exces-
sively drained soils that are rapidly permeable. These soils
occur along the coast at elevations close to sea level. They
formed in sandy material that consisted of quartz grains and
subrounded fragments of volcanic rock. The climate is sub-
humid. Rainfall amounts to 50 to 65 inches, and the temper-
ature ranges from 76 to 790 F.

In a representative profile the surface layer is dark-
brown, medium acid sand about 12 inches thick. This layer
contains very dark brown, sand-sized volcanic fragments.
The next layer, to a depth of about 19 inches, is dark yellow-
ish-brown, medium acid, loose, nonsticky and nonplastic
sand. The substratum, to a depth of more than 5 feet, cons-
ists of very pale brown, calcareous, loose, nonsticky and
nonplastic sand.

Most of the acreage is planted fo coconuts, but there is an
undergrowth of native pasture plants and brush. Subsist-
ence crops are grown occasionally.

Representative profile of Espinal sand, 2.4 kilometers
south of the town of Aguadilla, 100 meters east of kilometer
marker 0.7 on Highway No. 442.


Ap-0 a 6 pulgadas, pardo-grisiceo oscuro (10YR 4/2) limoso 16mico;
estructura granular,d6bil fina; consistencia friable, levemente
pegajosa, levemente plistica; abundancia de raicillas; medi-
anamente acida; limited claro liso.
B2-6 a 12 pulgadas, pardo-grisiceo oscuro (10YR 4/2) 16mico, color
cambia a pardo (10YR 4/3) al desmenuzarlo; estructura
bloque subangular d6bil fina; consistencia friable, levemente
pegajosa, levemente plastica; presencia de raicillas, co-
munes; medianamente Acido; limited claro liso.
B3-12 a 36 pulgadas, pardo amarillento oscuro (10YR 4/4) limoso
16mico; estructura bloque subangular d6bil fina; consistencia
friable, levemente pegajosa, levemente plistica; presencia de
raicillas, comunes; medianamente Acido; limited gradual liso.
C-36 a 60 pulgadas +, pardo amarillento oscuro (10YR 4/4) 16mico;
macisa; consistencia friable, levemente pegajosa, levemente
plastica; algunas raicillas; medianamente acido.
El solum varia desde 20 hasta 40 pulgadas en espesor. En algunos
sitios, hay capas finas de arena o de materials gruesos a diferentes
profundidades en el perfil. Los horizontes A y B tienen colors con
matiz de 10YR, valores de 4 y 5, y cromas de 2 hasta 4. El horizonte B
tiene estructura d6bil, subangular en bloque que varia desde fina hasta
median en clase. Los horizontes B y C varian en textura desde 16mi-
cos hasta limosos 16micos. Los horizontes C tienen colors con ma-
tices de 10YR y 7.5YR, valor y cromas de 4 hasta 6.
Dique limoso o1mico (Du).-Este suelo es casi Ilano y esta
en los llanos inundables cercanos a las quebradas y a los
rios. Es f6rtil y tiene una capacidad de retenci6n de hume-
dad moderada. La erosi6n es un peligro leve.
Se incluyen algunas areas de Toa limo arcilloso 16mico y
de Reilly cascajoso 16mico. Estas areas alcanzan al 5 por-
ciento o menos del cuerdaje total.
Este suelo se presta para la siembra de una gran variedad
de plants y puede usarse sin peligros para cosechas de cul-
tivo limpio. Ha estado mayormente sembrado de caiia de
azticar, pero pequefias areas estin en pastos, en yerba de
corte, y en cosechas para el uso de la finca. El suelo es de
ficil laboreo. Se requieren solamente prActicas ordinarias
de manejo. (Unidad de capacidad I-1; no esta en un grupo
de bosques)

Serie Espinal
La series Espinal consiste de suelos profundos, casi lla-
nos, de desagiie excesivo, que son ripidamente permeables.
Estos suelos estin a lo largo de la costa a elevaciones cer-
canas al nivel del mar. Se han formado en un material areno-
so que consiste de granos de cuarzo y fragments redondea-
dos de roca volcinica. El clima es subhtmedo. La lluvia
alcanza a 50 hasta 65 pulgadas, y la temperature varia desde
760 hasta 790 F.
En un perfil representative la capa superficial es pardo
oscura, medianamente acida, de textura arenosa, alrededor
de 12 pulgadas de espesor. Esta capa contiene fragments
volcAnicos del tamafio de arena de color pardo muy oscuro.
La pr6xima capa, hasta una profundidad de 19 pulgadas, es
pardo amarillosa oscura, medianamente acida, suelta, no
pegajosa y no plistica, de textura arenosa. El substrato,
hasta una profundidad de mis de 5 pies, consiste de arena
color pardo muy pilido, calcireo, suelto, no pegajoso y no
plastico.
La mayor parte del cuerdaje esti sembrada de cocos,
pero tiene una vegetaci6n subcreciente de pastos nativos y
de brefiales. Ocasionalmente se siembran cosechas para el
uso de la finca.
Perfil representative de Espinal arenoso, 2.4 kil6metros al
sur del pueblo de Aguadilla, 100 metros al este del marcador
de kil6metros 0.7, en la carretera no. 442.






SOIL SURVEY


AI-0 to 12 inches, dark-brown (10YR 3/3) sand; very dark brown
(10YR 2/2) grains of sand-sized volcanic fragments; single
grained; loose, nonsticky and nonplastic; few fine roots; me-
dium acid; clear, wavy boundary.
C1-12 to 19 inches, dark yellowish brown (10YR 4/4) sand; material
from the Al horizon that is stained dark brown (10YR 3/3);
single grained; loose, nonsticky and nonplastic; medium acid;
abrupt, wavy boundary.
C2-19 to 60 inches +, very pale brown (10YR 7/4) sand; single
grained; loose, nonsticky and nonplastic; many sand-sized
volcanic fragments; strong effervescence with dilute hydro-
chloric acid.
Reaction in the noncalcareous horizons ranges from slightly acid to
medium acid. Depth to a calcareous horizon ranges from 16 to 24 inch-
es. The effervescence of the calcareous C2 horizon with dilute hydro-
chloric acid ranges from strong to violent. The A horizon has a hue of
7.5YR and 10YR and a value and a chroma of 2 and 3. The Cl horizon
has a hue of 10YR and a value and a chroma of 3 and 4. The C2 horizon
has a hue of 10YR, a value of 6 and 7, and a chroma of 3 and 4.

Espinal sand (Es).-This soil occurs at elevations close to
sea level. It has rapid permeability, low available water ca-
pacity, and low fertility.
Included in mapping were small areas of Catano sand and
Coastal beach. These areas make up 5 percent or less of the
acreage.
This soil is generally not suitable for cultivation. Its use is
restricted mainly to coconuts, pasture, and wildlife habitat.
Most of the acreage is in old coconut trees and an under-
growth of native pasture plants and low brush. Small areas
are planted to subsistence crops and citrus. Other areas are
used for residential sites and recreational purposes. Availa-
ble water capacity, permeability, and fertility are severe
limitations. (Capability unit VIs-26; not in a woodland
group)



Guanajibo Series
The Guanajibo series consists of deep, well-drained soils
that are very strongly acid and moderately permeable.
These soils formed in moderately coarse textured sediments
that are underlain by Coastal Plain clay that contains plin-
thite. The slope ranges from 2 to 12 percent. The climate is
subhumid. Rainfall amounts to 60 to 70 inches, and the an-
nual temperature ranges from 780 to 800 F.

In a representative profile the surface layer is reddish-
brown, very strongly acid loam about 10 inches thick. The
upper part of the subsoil, to a depth of about 37 inches, is
reddish-brown and yellowish-red, very strongly acid, fria-
ble, slightly sticky and slightly plastic sandy clay loam and
clay loam that contains a few fine and medium black concre-
tions. The lower part is red, very strongly acid, friable,
slightly sticky and slightly plastic clay. Nonindurated plin-
thite makes up more than 10 percent of the lower part of the
subsoil.


Nearly all the acreage is planted to sugarcane.
A representative profile of Guanajibo loam, 2 to 12 per-
cent slopes, 4.0 kilometers north of the town of Cabo Rojo,
8 meters east of kilometer marker 4.2 on Highway No. 311.


A1-0 a 12 pulgadas, pardo oscuro (10YR 3/3) arenoso con fragments
volcAnicos, color pardo oscuro (10YR 2/2) tamailo granulo de
arena; estructura arena incoherente; consistencia suelta, no
pegajosa, no plistica; algunas raicillas; medianamente Acida;
limited claro ondulante.
Cl-12 a 19 pulgadas, pardo amarillento oscuro (10YR 4/4) arenoso,
salpicado con manchas de material procedente del Al de co-
lor pardo oscuro (10YR 3/3); estructura arena incoherente;
consistencia suelta, no pegajosa, no plfstica; medianamente
Acida; limited abrupto ondulante.
C2-19 a 60 pulgadas +, pardo bien pilido (10YR 7/4) arenoso; es-
tructura arena incoherente; consistencia suelta, no pegajosa,
no plAstica; abundancia de fragments volcAnicos tamafio
arena; efervescencia con icido chlorohidrico diluido, fuerte.
La reacci6n en los horizontes que no son calcAreos varia desde leve-
mente Acida a medianamente Acida. La profundidad a los horizontes
calcireos varia desde 16 hasta 24 pulgadas. La efervescencia en el ho-
rizonte calcareo C2, con Acido chlorohidrico diluido,varia desde fuerte
hasta violent. El horizonte tiene matices de 7.5YR y 10YR, y valores'
y cromas de 2 y 3. El horizonte Cl tiene matiz de 10YR, valor y cro-
mas de 3 y 4. El horizonte C2 tiene matiz de 10YR, valor de 6 y 7, y
cromas de 3 y 4.
Espinal arenoso (Es).-Este suelo esti a elevaciones cerca
del nivel del mar. Tiene una permeabilidad ripida, capaci-
dad de retenci6n de humedad baja, y fertilidad pobre.
Se incluyen areas pequefias de Catafio arenoso y de Playa
costanera. Estas areas alcanzan al 5 porciento o menos del
cuerdaje total.
Este suelo no se presta por lo general para cosechas de
cultivo limpio. Su uso esta restrict mayormente a cocos,
pastos y habitat de vida silvestre. La mayor parte del cuer-
daje esta en palmas de cocos viejas, con una vegetaci6n
subcreciente de pastes nativos y de brefiales bajos. Areas
pequefias estin sembradas de cosechas para el uso en la
finca y de arboles citrosos. Otras areas se usan como sitios
residenciales y con prop6sito de recreaci6n. La capacidad
de retenci6n de humedad, la permeabilidad, y la fertilidad
son limitaciones several. (Umdad de capacidad VIs-26; no
esta en un grupo de bosques)

Serie Guanajibo
La series Guanajibo consiste de suelos profundos, de buen
desagiie, que son muy fuertemente acidos y moderada-
mente permeables. Estos suelos se han formado en sedi-
mentos de textura moderadamente gruesa. Bajo estos sedi-
mentos hay arcillas de los llanos costaneros que tienen plin-
tita. El declive varia desde 2 hasta 12 porciento. El clima es
subhfmedo. La lluvia alcanza a 60 hasta 70 pulgadas, y la
temperature annual varia desde 78 hasta 80 F.
En un perfil representative la capa superficial es pardo
rojiza, muy fuertemente icida, de textura 16mica y de alre-
dedor de 10 pulgadas de espesor. La parte superior del sub-
suelo, hasta una profundidad de 37 pulgadas, es pardo rojiza
y rojo amarillenta, muy fuertemente acida, friable, leve-
mente pegajosa y levemente plastica, de textura areno-ar-
cilloso 16mica y arcillosa 16mica, que contiene algunas con-
creciones finas y medianas de color negro. La parte inferior
es roja, muy fuertemente acida, friable, levemente pegajosa
y levemente plastica, de textura arcillosa. Plintita, que no se
ha endurecido, alcanza a mis del 10 porciento de la parte
inferior del subsuelo.
Casi todo el cuerdaje esti sembrado de calia de azicar.
Un perfil representative de Guanajibo 16mico, 2 a 12 por-
ciento de declive, 4.0 kil6metros al norte del pueblo de Cabo
Rojo, 8 metros al este del marcador de kil6metros 4.2, en la
carretera 311.







MAYAGUEZ AREA OF WESTERN PUERTO RICO


Ap-0 to 10 inches, reddish-brown (5YR 4/3) loam; weak, medium,
granular structure; loose, very friable, nonsticky and non-
plastic; common fine roots; very strongly acid; clear, smooth
boundary.
BI-lO to 17 inches, reddish-brown (5YR 4/3) sandy clay loam; weak,
fine, subangular blocky structure; friable, slightly sticky and
slightly plastic; common fine roots; few fine pores; thin,
patchy clay films on ped faces and in root channels; few, fine
and medium, black concretions; very strongly acid; clear,
smooth boundary.
B21t-17 to 23 inches, yellowish-red (5YR 4/6) clay loam; weak, fine,
subangular blocky structure; friable, slightly sticky and
slightly plastic; common fine roots; few fine pores; thin
patchy clay films on ped faces and in root channels; few, fine
and medium, black concretions; very strongly acid; clear,
smooth boundary.
B22t-23 to 37 inches, yellowish-red (5YR 4/8) sandy clay loam; weak,
fine, subangular blocky structure; friable, slightly sticky and
plastic; few fine roots; few fine pores; thin patchy clay films
on ped faces and in root channels; few fine black concretions;
very strongly acid; clear, smooth boundary.

B23t-37 to 44 inches, red (2.5YR 4/6) clay that is more than 5 percent,
by volume, nonindurated plinthite; weak, fine, subangular
blocky structure; friable, slightly sticky and slightly plastic;
few fine roots; common fine pores; thin patchy clay films;
few, fine, black concretions, very strongly acid; clear,
smooth boundary.
B24t-44 to 60 inches +, red (2.5YR 4/6) clay that is more than 10 per-
cent, by volume, nonindurated plinthite; common, medium,
distinct mottles of strong brown (7.5YR 5/6); weak, coarse,
subangular blocky structure; friable, slightly sticky and
slightly plastic; common fine pores; thin patchy clay films;
few, fine, black concretions; very strongly acid.

The depth to a horizon in which plinthite makes up more than 5 per-
cent of the soil material ranges from 30 to 54 inches. Black concretions
range from few to many in number and from fine to medium in size.
Reaction ranges from strongly acid to very strongly acid. The Ap hori-
zon ranges from 6 to 12 inches in thickness and has a hue of 5YR and
7.5YR, a value of 4 to 5, and a chroma of 3 and higher. The B horizon
ranges from sandy clay loam to clay in texture. The B2t horizon has a
hue of 5YR and 2.5YR, a value of 4 and 5, and a chroma of 6 and high-
er. It has weak subangular blocky structure that ranges from fine to
medium in class.

Guanajibo sandy loam, 2 to 12 percent slopes (GnC).-This
soil is in small valleys between the limestone hills. It has a
profile similar to the one described as representative of the
series, but the surface layer is coarser textured. The availa-
ble water capacity is low in the surface layer, and fertility is
low. Erosion is a hazard.

Included in mapping were small areas of Coto clay and
Bejucos sandy clay. Also included were small spots of
Limestone outcrop. All of these areas make up 10 percent
or less of the acreage.
Most of the acreage is in native pasture and low brush.
The soil is occasionally cultivated and used for subsistence
crops, but the limitations to the use of this soil for cultivated
crops are severe. Available water capacity, fertility, and
erosion hazard are very severe limitations. The choice of
plants is restricted, and very careful management is needed.
Contour furrows, ditches, and diversions are difficult to
maintain because of the moderately coarse texture of the
surface layer. (Capability unit IVe-20; not in a woodland
group)


Ap-0 a 10 pulgadas, pardo rojizo (5YR 4/3) 16mico; estructura granu-
lar d6bil median incoherente; bien friable, no pegajoso, no
plistico; raicillas comunes; bien fuertemente Acido; limited
claro liso.
Bl-10 a 17 pulgadas, pardo rojizo (5YR 4/3) areno arcilloso 16mico;
estructura bloque subangular d6bil fina; consistencia friable,
levemente pegajosa, levemente plistica; raicillas comunes;
algunos poros finos; peliculas de arcilla recubriendo los pia-
nos de los peds y las cavidades dejadas por las raices; presen-
cia de algunas concreciones finas y medianas color negras;
bien fuertemente acido; limited claro liso.
B21t-17 a 23 pulgadas, rojo amarillento (5YR 4/6) arcilloso 16mico;
estructura subangular en bloques d6bil fina; consistencia fria-
ble, levemente pegajosa y levemente plastica; raicillas co-
munes; algunos poros finos; peliculas de arcilla finas recu-
briendo los pianos de los peds y las cavidades dejadas por las
raices; pocas concreciones negras, finas y medianas; bien
fuertemente icida; limited claro liso.
B22t-23 a 37 pulgadas, rojo amarillento (5YR 4/8) areno arcilloso
16mico; estructura bloque subangular fina; consistencia fria-
ble; levemente pegajosa, plastica; algunas raicillas; algunos
poros finos; peliculas de arcilla recubriendo los pianos de los
peds y las cavidades dejadas por las raices; algunas concre-
ciones finas y negras; bien fuertemente acido; limited claro
liso.
B23t-37 a 44 pulgadas, rojo (2.5YR 4/6) arcilloso, con mis de 5 por-
ciento de su volume de plintita no petrificada; estructura
bloque subangular d6bil fina; friable, levemente pegajoso,
levemente plfstico; algunas raicillas; presencia com6n de
poros finos; mosaicos revestidos de peliculas finas de arcilla;
algunas concreciones finas y negras; bien fuertemente acido;
limited claro liso.
B24t-44 a 60 pulgadas +, rojo (2.5YR 4/6) arcilloso, con mis de 10
porciento por volume de plintita no petrificada; manchas
comunes, medianas y precisas color pardo fuerte (7.5YR 5/
6); estructura bloque subangular d6bil gruesa; consistencia
friable, levemente pegajosa, levemente plistica; presencia
comtin de poros finos; mosaicos recubiertos de peliculas finas
de arcilla; algunas concreciones finas y negras; bien fuerte-
mente acido.
La profundidad al horizonte en el cual la plintita alcanza a mis del 5
porciento del material del suelo varia desde 30 hasta 54 pulgadas. Las
concreciones negras varian desde pocas hasta muchas en nimero, y
desde finas hasta medianas en tamaio. La reacci6n varia desde fuerte-
mente acida hasta bien fuertemente Acida. El horizonte Ap varia desde
6 hasta 12 pulgadas en espesor y tiene matices de 5YR y 7.5YR, va-
lores de 4 y 5, y cromas de 3 y mis altas. El horizonte B varia desde
areno-arcilloso 16mico hasta arcilloso en textura. El horizonte B2t
tiene matices de 5YR y 2.5YR, valor de 4 y 5, y cromas de 6 y mis al-
tas. Tiene estructura d6bil bloque subangular que varia desde fina has-
ta median en clase.
Guanajibo arenoso 16mico, 2 a 12 porciento de declive
(GnC).-Este suelo esti en pequefios valles entire los
montes calizos. Tiene un perfil similar al descrito como re-
presentativo de la series, pero la capa superficial es de tex-
tura mis gruesa. La capacidad de retenci6n de humedad es
baja en la capa superficial, y la fertilidad es pobre. La ero-
si6n es un peligro.
Se incluyen areas pequefias de Coto arcilloso y de Beju-
cos arenoso arcilloso, Tambi6n se incluyen pequefias areas
de afloraciones calizas. Todas estas areas alcanzan al 10
porciento o menos del cuerdaje total.
La mayor parte del cuerdaje esti en pastos natives y en
brefiales bajos. El suelo se cultiva ocasionalmente y se usa
para cosechas para el uso de la finca, pero las limitaciones
para el uso de este suelo para cosechas de cultivo limpio son
several. La capacidad de retenci6n de humedad, la fertili-
dad y el peligro de erosi6n son limitaciones muy several. La
selecci6n de plants es restrict, y se require un manejo
muy cuidadoso. Es dificil mantener los surcos a nivel, las
zanjas, y las zanjas de desviaci6n debido a la textura mode-
radamente gruesa de la capa superficial. (Unidad de capaci-
dad IVe-20; no esta en un grupo de bosques)






SOIL SURVEY


Guanajibo loam, 2 to 12 percent slopes (GoC).-This soil is
on side slopes and hilltops. It has the profile described as
representative of the series. The available water capacity is
low in the surface layer, and fertility is low. Erosion is a
hazard.
Included in mapping were small spots of Nipe clay and
Cabo Rojo clay. Also included were small areas of a finer
textured, somewhat poorly drained soil that has a dark-
brown surface layer and a slope range of 12 to 20 percent.
All these areas make up 15 percent or less of the acreage.

A large acreage is in sugarcane, but small areas are in pas-
ture and subsistence crops. The limitations to the use of this
soil for cultivated crops are very severe. Available water
capacity in the surface layer, fertility, and hazard of erosion
are limitations. The choice of crops is restricted and careful
management is needed. Water control practices are difficult
to maintain because texture of the surface layer is too
coarse. (Capability unit IVe-20; not in a woodland group)



Guerrero Series
The Guerrero series consists of deep, well-drained soils
that are underlain by mottled Coastal Plain clay at a depth of
20 to 40 inches. Permeability is rapid in the surface layer
and moderately slow in the subsoil. The slope ranges from 2
to 5 percent. The climate is subhumid. Rainfall amounts to
50 to 65 inches, and the annual temperature ranges from 76
to 780 F.

In a representative profile the surface layer consists of
dark-brown, medium acid sand about 22 inches thick, and
below this is yellowish-red loamy sand about 6 inches thick.
The upper part of the subsoil is yellowish-red, strongly acid,
firm, slightly sticky and plastic sandy clay that contains
common, fine, soft, black concretions. Below this layer, to
a depth of 50 inches, is strong-brown, strongly acid, firm,
slightly sticky and plastic clay that is mottled with dark
brown. Soft plinthite makes up 10 to 20 percent of this lay-
er. At a depth below 50 inches is yellowish-brown clay.



Nearly all the acreage is in coconuts and an undergrowth
of native pasture plants. The acreage is used for grazing.
Small areas are in pangolagrass or elephantgrass.

Representative profile of Guerrero sand, 2 to 5 percent
slopes, 1.6 kilometers west of the town of Isabela, 25 meters
north and 9 meters west of kilometer marker 1.7 on High-
way No. 459.
Ap-0 to 10 inches, sand that is grayish brown (10YR 5/2) dry and dark
brown (7.5YR 4/2) moist; single grained; loose, nonsticky and
nonplastic; many fine roots; medium acid; clear, smooth
boundary.
All-10 to 22 inches, dark-brown (7.5YR 4/4) sand; single grain; loose,
nonsticky and nonplastic; many fine roots; few, fine, soft,
black concretions; medium acid; clear, smooth boundary.
A12-22 to 28 inches, yellowish-red (5YR 4/6) loamy sand; single
grained; loose, nonsticky and nonplastic; few fine roots; few
black concretions; medium acid; clear, smooth boundary.


Guanajibo lomico, 2 a 12 porciento de declive (GoC).-
Este suelo esta en las laderas y en cumbres. Tiene un perfil
descrito como representative de la series. La capacidad de
retenci6n es baja en la capa superficial, y la fertilidad es
pobre. La erosion es un peligro.
Se incluyen areas pequefias de Nipe arcilloso y de Cabo
Rojo arcilloso. Tambi6n se incluyen areas pequenias de un
suelo que tiene textura mis fina, que tiene desagiie algo
pobre y que tiene una capa superficial de color pardo oscu-
ro, con un declive que varia desde 12 hasta 20 porciento.
Todas estas areas alcanzan al 15 porciento o menos del
cuerdaje total.
Un cuerdaje considerable esti en caila de azicar, pero
areas pequefias estin en pastos y cosechas para el uso de la
finca. Las limitaciones para el uso de este suelo para cose-
chas de cultivo limpio son muy several. La capacidad de
retenci6n de humedad en la capa superficial, la fertilidad, y
el peligro de erosi6n son limitaciones. La selecci6n de cose-
chas esta restrict y se require un manejo cuidadoso. Las
practices para el control de humedad son dificiles de mante-
ner debido a la textura de la capa superficial que es muy
gruesa. (Unidad de capacidad IVe-20; no esti en un grupo
de bosques)

Serie Guerrero
La series Guerrero consiste de suelos profundos de buen
desagiie y que tienen una profundidad de 20 hasta 40 pulga-
das a las arcillas manchadas de los llanos costaneros. La
permeabilidad es ripida en la capa superficial, y moderada-
mente lenta en el subsuelo. El declive varia desde 2 hasta 5
porciento. El clima es subhfimedo. La lluvia alcanzan a 50
hasta 65 pulgadas, y la temperature annual varia desde 76
hasta 780 F.
En un perfil representative la capa superficial es pardo
oscura, medianamente acida, de textura arenosa, y de alre-
dedor de 22 pulgadas de espesor. Bajo esta capa hay otra
color rojo amarillosa, de textura 16mica arenosa de alrede-
dor de 6 pulgadas de espesor. La parte superior del subsuelo
es rojo amarilloso, fuertemente Acida, firme, levemente
pegajosa y plistica, de textura areno-arcillosa que contiene
concreciones negras comunes, finas y blandas. Bajo esta
capa, y a una profundidad de 50 pulgadas, hay otra de color
pardo fuerte, fuertemente acida, firme, levemente pegajosa
y plistica, de textura arcillosa, que tiene manchas color
pardo oscuras. Plintita blanda alcanza hasta el 10 al 20 por-
ciento de esta capa. A una profundidad de mis de 50 pulga-
das hay una arcilla pardo amarillosa.
Casi todo el cuerdaje esti en cocos, con una vegetaci6n
subcreciente de pastos natives. Este cuerdaje se usa para
pastoreo. Pequefias areas estan en yerba pangola o en yerba
elefante.
Perfil representative de Guerrero arenoso, 2 a 5 porciento
de declive, 1.6 kil6metros al oeste del pueblo de Isabela, 25
metros al norte y 9 metros al oeste del marcador de kil6me-
tros 1.7 de la carretera no. 459.
Ap-0 a 10 pulgadas, pardo grisfceo (10YR 5/2) en seco, pardo oscuro
(7.5YR 4/2) en h6medo; arenoso; estructura arena incohe-
rente; consistencia suelta, no pegajosa, no plistica; abundan-
cia de raicillas; medianamente Acido, limited claro liso.
All--10 a 22 pugladas, pardo oscuro (7.5YR 4/4) arenoso; estructura
arena incoherente; consistencia suelta, no pegajosa, no
plistica; abundancia de raicillas; algunas concreciones finas,
negras y blandas; medianamente icido; limited claro liso.
A12-22 a 28 pulgadas, rojo amarillento (5YR 4/6) 16mico arenoso;
estructura arena incoherente; consistencia suelta; no pega-
josa; plfstica; algunas raicillas; algunas concreciones negras;
medianamente Acido; limited claro liso.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


B21t-28 to 36 inches, yellowish-red (5YR 4/6) sandy clay; weak,
coarse, subangular blocky structure; firm, slightly sticky and
plastic; very few roots; common, fine, soft, black concre-
tions; strongly acid; sand grains coated and bridged with red
clay; clear, wavy boundary.
B22t-36 to 44 inches, strong-brown (7.5YR 5/6) clay; common, fine,
prominent mottles of red (2.5YR 4/6) and common, fine, faint
mottles of dark brown (7.5YR 4/4); weak, coarse, subangular
blocky structure; firm, slightly sticky and plastic; few, fine,
black concretions; many fine quartz grains; strongly acid; 15
percent soft plinthite; clear, wavy boundary.

B23t-44 to 50 inches, strong-brown (7.5YR 5/8) clay; common, medi-
um, distinct mottles of yellowish brown (10YR 5/6), com-
mon, fine and medium, prominent mottles of dark red (2.5YR
3/6), and common, medium, prominent mottles of light gray
(10YR 6/1); weak, coarse, subangular blocky structure; firm,
slightly sticky and plastic; many fine quartz grains; very
strongly acid; 15 percent soft plinthite; clear, wavy bounda-
ry.
B24t-50 to 70 inches +, yellowish-brown (10YR 5/6) clay; common,
medium, prominent mottles of light gray (10YR 7/1) and few,
fine, prominent mottles of dark red (2.5YR 3/6); weak,
coarse, subangular blocky structure; firm, slightly sticky and
plastic; many fine quartz grains; very strongly acid; 8 percent
soft plinthite.

The A horizon ranges from sand to loamy sand in texture and from
20 to 40 inches in thickness. It has a hue of 5YR to 10YR, a value of 4
or more, and a chroma of 2 to 6. The B horizon is more than 50 inches
thick. The B2t horizon ranges from sandy clay to clay in texture and
has a hue of 10YR to 5YR, a value of 4 and 5, and a chroma of 6 and
higher. It has weak subangular blocky structure that ranges from medi-
um to coarse. Nonindurated plinthite nodules make up more than 5
percent of this horizon.

Guerrero sand, 2 to 5 percent slopes (GuB).-This soil is
on the Coastal Plains not far from the beach. The available
water capacity is low, permeability is rapid in the surface
layer, and fertility is low.

Included in mapping were areas of Jobos sandy loam and
Bejucos sandy loam. These areas make up 10 percent or less
of the acreage.
This soil is generally not suitable for cultivation. Its use is
limited mainly to pasture or wildlife habitat. Most of the
acreage is in coconuts and an undergrowth of native pasture
or low brush. A few areas are in subsistence crops. Availa-
ble water capacity, permeability, and fertility are limita-
tions. (Capability unit VIs-23; not in a woodland group)



Humatas Series
The Humatas series consists of deep, well-drained soils
that are very strongly acid and moderately permeable.
These soils are on side slopes and narrow ridgetops of the
uplands. They formed in residual material weathered from
volcanic rock. The slope ranges from 12 to 60 percent. The
climate is humid. Rainfall amounts to 70 to 100 inches, and
annual temperature ranges from 72 to 790 F.


B21t-28 a 36 pulgadas, rojo amarillento (5YR 4/6) areno arcilloso;
estructura bloque subangular d6bil gruesa; consistencia
firme, levemente pegajosa, plistica; muy pocas raicillas;
concreciones comunes finas, negras y blandas; fuertemente
acido; grinulos de arena revestidos de arcilla roja que a la vez
los une entire si; limited claro ondulante.
B22t-36 a 44 pulgadas, pardo fuerte (7.5YR 5/6) arcilloso con man-
chas comunes finas y prominentes, color rojo (2.5YR 4/6) y
manchas comunes, finas, tenues, color pardo oscuras (7.5YR
4/4); estructura bloque subangular d6bil gruesa; consistencia
firme; levemente pegajosa, plitica; algunas concreciones
finas y negras; abundancia de granulos finos de cuarzo;
fuertemente Acido; 15 porciento por volume de plintita blan-
da; limited claro ondulante.
B23t-44 a 50 pulgadas, pardo fuerte (7.5YR 5/8) arcilloso con man-
chas comunes, medianas, precisas, pardo amarillentas (10YR
5/6), otras prominentes comunes, finas y medianas, color rojo
oscuro (2.5YR 3/6) y otras prominentes, comunes, medianas,
color gris claro (10YR 6/1); estructura bloque subangular
d6bil gruesa; consistencia firme, levemente pegajosa, plisti-
ca; abundancia de granulos de cuarzo; bien fuertemente Aci-
do; 15 porciento por volume de plintita; limited claro ondu-
lante.
B24t-50 a 70 pulgadas, pardo amarillento (10YR 5/6) arcilloso con
manchas comunes, medianas, prominentes, gris claras (10YR
7/1) y algunas finas, prominentes color rojo oscuras (2.5YR 3/
6); estructura bloque subangular d6bil gruesa; consistencia
firme, levemente pegajosa, plastica; abundancia de grAnulos
finos de cuarzo; bien fuertemente Acido; 8 porciento por volu-
men de plintita.
El horizonte A varia desde arenoso hasta 16mico arenoso en textura,
y desde 20 hasta 40 pulgadas en espesor. Tiene matices de 5YR a
10YR, valor de 4 o mis, y cromas desde 2 hasta 6. El horizonte B tiene
mis de 50 pulgadas de espesor. El horizonte B2t varia desde areno ar-
cilloso, hasta arcilloso en textura, y tiene matices de 10YR y 5YR, va-
lores de 4 y 5, y cromas de 6 y mas altos. Tiene estructura d6bil,
bloque subangular que varia desde median hasta gruesa. Los nodulos
de plintita no petrificada alcanzan hasta a mAs del 5 porciento de este
horizonte.
Guerrero arenoso, 2 a 5 porciento de declive (GuB).-Este
suelo esti en los llanos costaneros no muy lejos de la playa.
La capacidad de retenci6n de h6medad es baja, la permea-
bilidad es rApida en la capa superficial, y la fertilidad es
pobre.
Se incluyen areas de Jobos arenoso 16mico y de Bejucos
arenoso l6mico. Estas areas alcanzan al 10 porciento o
menos del cuerdaje total.
Este suelo, generalmente, no se presta para cultivo. Su
uso es limitado mayormente a pastos o habitat de vida sil-
vestre. La mayor parte del cuerdaje esti en cocos, con una
vegetaci6n subcreciente de pastos o brefiales bajos. Algu-
nas areas estin en cosechas para uso en la finca. La capaci-
dad de retenci6n de humedad, la permeabilidad, y la fertili-
dad son limitaciones. (Unidad de capacidad VIs-23; no esti
en un grupo de bosques).

Serie Humatas
La series Humatas consiste de suelos profundos, de buen
desagiie, que son muy fuertemente icidos y moderada-
mente permeables. Estos suelos estin en las laderas y
cumbres estrechas de las alturas. Se han formado en mate-
rial residual meteorizado de las rocas volcinicas. El declive
varia desde 12 hasta 60 porciento. El clima es h6medo. La
lluvia alcanza a 70 hasta 100 pulgadas, y la temperature an-
ual varia desde 72 hasta 790F.






SOIL SURVEY


In a representative profile the surface layer is dark-
brown, very strongly acid clay about 4 inches thick. The
upper part of the subsoil is yellowish-red, very strongly
acid, friable, slightly sticky and plastic clay. The lower part,
to a depth of about 32 inches, is red, very strongly acid, fria-
ble, slightly sticky and plastic clay and silty clay loam. The
substratum consists of thick, very strongly acid, very fria-
ble, nonsticky and slightly plastic silty clay loam variegated
with red, very pale brown, and yellowish brown.



Coffee, pasture, and many subsistence crops are grown.
These soils are more intensively cultivated than other soils
on uplands in the survey area.

Representative profile of Humatas clay, 20 to 40 percent
slopes, eroded, 10.4 kilometers north of the city of Maya-
guez, 200 meters on dirt road from kilometer marker 2.45 on
Highway No. 406 and 107 meters southwest of dirt road.

Ap-0 to 4 inches, dark-brown (7.5YR 4/4) clay; moderate, fine, gran-
ular structure; friable, slightly sticky and slightly plastic;
many fine roots; very strongly acid; clear, smooth boundary.
B21t-4 to 9 inches, yellowish-red (SYR 5/6) clay; moderate, fine,
subangular blocky structure; friable, slightly sticky and
plastic; many fine roots; few fine pores; thin patchy clay
films; few fine black specks; very strongly acid; clear, smooth
boundary.
B22t-9 to 15 inches, red (2.5YR 5/8) clay; moderate, medium and
fine, subangular blocky structure; friable, slightly sticky and
plastic; common fine roots; few fine pores; thin patchy clay
films; very strongly acid; clear, smooth boundary.
B23t-15 to 25 inches, red (2.5YR 5/6) clay; weak, fine, subangular
blocky structure; friable, nonsticky and slightly plastic; few
fine roots; common fine pores; very strongly acid; clear,
smooth boundary.
B3-25 to 32 inches, silty clay loam variegated with red, dark red, very
pale brown, and yellowish brown; red (2.5YR 5/6) rubbed;
saprolite makes up 30 percent of this material; weak, fine and
medium, subangular blocky structure; very friable, nonsticky
and slightly plastic; very fine roots; many fine pores; very
strongly acid; clear, smooth boundary.
C1-32 to 45 inches, silty clay loam (saprolite) variegated with red
(2.5YR 4/6), dark red (2.5YR 3/6), very pale brown (IOYR
7/4), and yellowish brown (IOYR 5/8); red (2.5YR 4/6)
rubbed; massive; very friable, nonsticky and slightly plastic;
many fine pores; very strongly acid; clear, smooth boundary.
C2-45 to 60 inches, silty clay loam (saprolite) variegated with
red (2.5YR 4/6), dark red (2.5YR 3/6), very pale brown (IOYR
7/4), and yellowish brown (IOYR 5/8); red (2.5YR 4/6)
rubbed; massive; very friable, nonsticky and slightly plastic;
very strongly acid; the highly weathered volcanic rock can be
crushed between fingers; original rock structure is visible.
C3-60 to 96 inches +, clay loam (saprolite) variegated with red
(2.5YR 4/6), dark red (2.5YR 3/6), very pale brown (10YR
7/4), and yellowish brown (IOYR 5/8); red (2.5YR 4/6)
rubbed; massive; very friable, nonsticky and slightly plastic;
very strongly acid (auger sample).

The solum ranges from clay to silty clay loam in texture. The A hori-
zon has a hue of 7.5YR and 5YR, a value of 3 to 5, and a chroma of 4 to
6. The B horizon ranges from 16 to 50 inches in thickness, and the B2
part of it from 12 to 24 inches. The B2 horizon has a hue of 5YR and
2.5YR, a value of 4 to 6, and a chroma of 6 to 8. It has weak, medium,
subangular blocky structure to moderate, fine and medium, subangular
blocky. The C horizon ranges from silty clay loam to clay loam in tex-
ture.


En un perfil representative la capa superficial es pardo
oscura, muy fuertemente acida, de textura arcillosa, y de
alrededor de 4 pulgadas de espesor. La parte superior del
subsuelo es rojo amarillosa, muy fuertemente acida, friable,
ligeramente pegajosa y plistica, de textura arcillosa. La
parte inferior, hasta una profundidad de 32 pulgadas, es
roja, muy fuertemente acida, friable, ligeramente pegajosa
y plastica, de textura arcillosa y limo arcilloso 16mica. El
substrato es grueso, muy fuertemente acido, muy friable,
no pegajoso y ligeramente plistico, de textura limo arcilloso
16mica, veteado con rojo, pardo muy pAlido, y pardo amari-
lloso.
Caf6, pastos y muchas cosechas para consume en la finca
estin sembrados en estos suelos. Estos suelos se cultivan
mis intensamente que cualquier otro en las alturas de esta
area.
Perfil representative de Humatas arcilloso, 20 a 40 por-
ciento de declive, erodado, 10.4 kil6metros al norte de la
ciudad de Mayagiiez, 200 metros en un camino de tierra
desde el marcador de kil6metros 2.45, en la carretera 406 y
107 metros al suroeste de dicho camino de tierra.
Ap-0 a 4 pulgadas, pardo oscuro (7.5YR 4/4) arcilloso; estructura
granular, moderada, fina; consistencia friable, levemente
pegajosa, levemente plastica; raicillas abundantes; bien
fuertemente acido; limited claro liso.
B21t-4 a 9 pulgadas, rojo amarillento (5YR 5/6) arcilloso; estructura
bloque subangular moderada fina; consistencia friable, leve-
mente pegajosa, plistica; raicillas abundantes; algunos poros
finos; mosaicos revestidos de peliculas delgadas de arcilla;
algunas manchas negras y finas; bien fuertemente icido; li-
mite claro liso.
B22t-9 a 15 pulgadas, rojo (2.5YR 5/8) arcilloso; estructura bloque
subangular moderada, fina y median; consistencia friable,
levemente pegajosa, plastica; raicillas comunes; algunos po-
ros finos; mosaicos revestidos de peliculas delgadas de arcil-
la; bien fuertemente acido; limited claro liso.
B23t-15 a 25 pulgadas, rojo (2.5YR 5/6) arcilloso; estructura bloque
subangular, d6bil fina; consistencia friable, no pegajosa, leve-
mente plistica; algunas raicillas; presencia comun de poros
finos; bien fuertemente acido; limited claro liso.
B3-25 a 45 pulgadas veteado con colors rojo, rojo oscuro, pardo
bien tenue, pardo amarilloso, rojo (2.5YR 5/6) al frotarse;
limo arcilloso 16mico; el saprolito alcanza al 30 porciento de
este horizonte; estructura subangular en bloques debil, fina y
median; muy friable, no pegajosa, levemente plistica; raices
muy finas; muchos poros finos; muy fuertemente acida; limited
claro liso.
CI-32 a 45 pulgadas, (saprolito) veteado con colors tales como rojo
(2.5YR 4/6), rojo oscuro (2.5YR 3/6) pardo bien tenue (10YR
7/4), pardo amarillento (10YR 5/8), color al frotarse es rojo
(2.5YR 4/6); limo arcilloso 16mico; estructura macisa; consis-
tencia bien friable, no pegajosa, levemente plistica; abun-
dancia de poros; bien fuertemente icido; limited claro liso.
C2-45 a 60 pulgadas, (saprolito) veteado con rojo (2.5YR 4/6), rojo
oscuro (2.5YR 3/6), pardo bien tenue (10YR 7/4) y pardo
amarilloso (10YR 5/8), rojo (2.5YR 4/6) al frotarse; limo arcil-
loso 16mico; macisa; consistencia bien friable, no pegajosa,
levemente plastica; bien fuertemente icido; este horizonte
consists de roca bien meteorizada, ficil de quebrar entire los
dedos; se conserve la estructura de la roca original.
C3-60 a 96 pulgadas +; muestras sustraidas con barren; saprolito
veteado en rojo (2.5YR 4/6), rojo oscuro (2.5YR 3/6), pardo
bien tenue (10YR 7/4) y pardo amarilloso (10YR 5/8), rojo
(2.5YR 4/6) al frotarse; arcilloso 16mico; estructura macisa;
consistencia bien friable, no pegajosa, levemente plistica;
bien fuertemente Acido.
El solum varia en textura desde arcilloso hasta limo arcilloso 16mi-
co. El horizonte A tiene matices de 7.5YR y 5YR, valores de 3 hasta 5,
y cromas desde 4 hasta 6. El horizonte B varia desde 16 a 50 pulgadas
en espesor, y el horizonte B2 varia desde 12 hasta 24 pulgadas en espe-
sor. El horizonte B2 tiene matices de 5YR y 2.5YR, valores de 4 a 6, y
cromas de 6 hasta 8. La estructura es subangular en bloques y varia
desde d6bil-mediana hasta moderada fina y median. El horizonte C
varia en textura desde limo-arcilloso 16mica hasta arcillosa 16mica.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


Humatas clay, 12 to 20 percent slopes, eroded (HmD2).-
This soil is on side slopes, foot slopes, and rounded hilltops
throughout the volcanic uplands. It has a profile similar to
the one described as representative of the series, but the
surface layer is dark-brown or brown clay 6 to 10 inches
thick, and the subsoil is red slightly sticky and plastic clay
18 to 38 inches thick. This soil has less slope than the soil
described as representative and has been less affected by
erosion. Runoff is medium, and erosion is a hazard. The
available water capacity is high, and fertility is medium.

Included in mapping were areas of Daguey clay. These
areas make up 10 percent or less of the acreage.
This soil is suitable for clean cultivation. It has been used
mainly for subsistence crops, but some areas are in native
pasture and low brush. The choice of plants is restricted,
and special practices are needed. The soil is somewhat diffi-
cult to work. Slope, runoff, past erosion, and hazard of fur-
ther erosion are limitations. Careful management is needed
in cultivated areas. Crops respond well to heavy applica-
tions of lime and fertilizer. (Capability unit IIIe-1; woodland
groups 1ol, lo2, lo3, lo4)

Humatas clay, 20 to 40 percent slopes, eroded (HmE2).-
This soil is on side slopes and narrow ridgetops of the vol-
canic uplands. It has the profile described as representative
of the series. Runoff is rapid, and fertility is medium.
Included in mapping were areas of Daguey clay and Con-
sumo clay. These areas make up 10 percent or less of the
acreage.

This soil is suitable for occasional but not regular clean
cultivation. Some areas are in coffee and native pasture.
The soil is somewhat difficult to work. Slope, runoff, past
erosion, and the hazard of further erosion are limitations.
Careful management and special practices are needed to
prevent deterioration of the soil. Crops respond well to
heavy applications of lime and fertilizer. (Capability unit
IVe-1; woodland groups lol, lo2, lo3, lo4)
Humatas clay, 40 to 60 percent slopes, eroded (HmF2).-
This soil is on strongly dissected side slopes and narrow
ridgetops throughout the volcanic uplands. It has a profile
similar to the one described as representative of the series,
but the combined surface layer and subsoil are thinner. This
soil has been more affected by erosion than Humatas clay,
20 to 40 percent slopes. It has a dark-brown, clayey surface
layer 3 to 5 inches thick and a red subsoil 18 to 34 inches
thick. The surface layer consists chiefly of a mixture of the
material from the original surface layer and part of the sub-
soil as a result of erosion. Runoff is rapid, and the erosion
hazard is severe.

Included in mapping were small areas of Consumo clay.
These areas make up 10 percent or less of the acreage.


Humatas arcilloso, 12 a 20 porciento de declive, erodado
(HmD2).-Este suelo esti en laderas, faldas y cumbres re-
dondeadas a trav6s de las alturas volcinicas. Tiene un perfil
similar al descrito como representative de la series, pero la
capa superficial es pardo oscura o pardo, arcillosa, de 6 a 10
pulgadas de espesor, y el subsuelo es rojo, levemente pega-
joso, y plistico, arcilloso, de 18 hasta 38 pulgadas de espe-
sor. Este suelo tiene menos declive que el suelo descrito
como representative y ha sido menos afectado por la ero-
si6n. El escurrimiento es median y la erosion es un peligro.
La capacidad de retenci6n de humedad es alta, y la fertili-
dad es median.
Se incluyen areas de Daguey arcilloso. Estas areas alcan-
zan al 10 porciento o menos del cuerdaje total.
Este suelo se presta para cosechas de cultivo limpio. Se
ha usado mayormente para cosechas para el uso de la finca,
pero algunas areas estin en pastos nativos y en brefiales
bajos. La selecci6n de plants es restrict y se requieren
practices especiales. El suelo es de laboreo algo dificil. El
declive, el escurrimiento, la erosion pasada y el peligro de
erosi6n en el future son limitaciones. Se require un manejo
cuidadoso tuando se cultivan estas areas. Las cosechas
responded bien a las aplicaciones fuertes de cal y abono.
(Unidad de capacidad IIIe-1; grupos de bosques lol, lo2,
lo3, lo4)
Humatas arcilloso, 20 a 40 porciento de declive, erodado
(HmE2).-Este suelo esta en laderas y cumbres estrechas
en las alturas volcinicas. Tiene el perfil descrito como re-
presentativo de la series. El escurrimiento es ripido y la ero-
si6n es un peligro. La capacidad de retenci6n de humedad
es alta y la fertilidad es median.
Se incluyen areas de Daguey arcilloso y Consumo arcillo-
so. Estas areas alcanzan al 10 porciento o menos del cuer-
daje total.
Este suelo se presta rara cultivo limpio occasional pero no
continuado. Algunas areas estin en caf6 y pastos natives.
El suelo es de laboreo algo dificil. El declive, el escurrimien-
to, la erosi6n pasada y el peligro de erosi6n en el future son
limitaciones. Se require un manejo cuidadoso y practices
especiales para prevenir el deterioro de este suelo. Las co-
sechas responded bien a las aplicaciones fuertes de cal y de
abono. (Unidad de capacidad IVe-1; grupos de bosques lol,
lo2, lo3, lo4)
Humatas arcilloso, 40 a 60 porciento de declive, erodado
(HmF2).-Este suelo esta en laderas y cumbres estrechas
que estin fuertemente bisectadas a trav6s de todas las altu-
ras volcinicas. Tiene un perfil similar al descrito como repre-
sentativo de la series, pero el espesor combinado de la capa
superficial y del subsuelo es mis delgado. Este suelo ha sido
mis afectado por la erosion que Humatas arcilloso, 20 a 40
porciento de declive. Tiene una capa superficial pardo os-
cura, de textura arcillosa y de 3 a 5 pulgadas de espesor, un
subsuelo que es rojo de 18 a 34 pulgadas de espesor. La
capa superficial consiste mayormente de una mezcla del
suelo original y parte del subsuelo como un resultado de la
erosi6n. El escurrimiento es ripido, y la erosi6n es un peli-
gro severe.
Se incluyen area pequefias de Consumo arcilloso. Estas
area alcanzan al 10 porciento a menos del total.






SOIL SURVEY


This soil is generally not suitable for clean cultivation. Its
use is limited mainly to pasture, woodland, or wildlife habi-
tat. A large acreage is in abandoned coffee and brush. Some
areas have been used for subsistence crops occasionally,
and other areas are in native pasture. Slope, runoff, past
erosion, and hazard of further erosion are limitations. (Cap-
ability unit VIe-1; woodland groups lol, lo2, 1o3, lo4)

Humatas gravelly clay, 12 to 40 percent slopes (HuE).-
This soil is on foot slopes and side slopes throughout the
volcanic uplands. It has a profile similar to the one de-
scribed as representative of the series, but angular frag-
ments, ranging from 1/2 to 2 inches in diameter, make up 20
to 50 percent of the surface layer. Runoff is medium to rap-
id, and erosion is a hazard. The available water capacity is
moderate, and fertility is medium.

Included in mapping were small spots of Humatas clay
that is not gravelly, and areas, especially on the hilltops, of
Consumo clay. These included areas make up 5 percent or
less of the acreage.
This soil is suitable for occasional but not regular clean
cultivation. It has been used mainly for native pasture, but
some areas were planted to sugarcane. The soil is somewhat
difficult to work. Careful management is needed to prevent
deterioration of the soil. Slope, runoff, and hazard of ero-
sion are limitations. Crops respond well to heavy applica-
tions of lime and fertilizer. (Capability unit IVe-1; woodland
groups lol, lo2, lo3, lo4)


Igualdad Series
The Igualdad series consists of poorly drained soils that
are slowly permeable. These soils are underlain by gray
sand at a depth of 24 to 40 inches. They are on the flood
plains of rivers. They formed in recent alluvial deposits of
silt and clay washed from the volcanic and limestone up-
lands. The depth of a water table is 4 to 30 inches. The cli-
mate is humid. Rainfall amounts to 70 to 90 inches, and the
annual temperature ranges from 77 to 790 F.

In a representative profile the surface layer is very dark
grayish-brown, strongly acid clay about 4 inches thick. The
upper part of the subsoil is very dark gray, medium acid,
firm, sticky and plastic clay that has reddish-brown and gray
mottles. The lower part, to a depth of about 24 inches, is
dark-gray, slightly acid, firm, sticky and plastic clay. The
substratum is dark greenish-gray sandy clay underlain by
dark greenish-gray sand that has many calcareous shell frag-
ments.

Most of the acreage has been in sugarcane for a long time.

Representative profile of Igualdad clay, 3.2 kilometers
west of the town of Anasco, 50 meters west of kilometer
marker 2.2 on Highway No. 115.
Ap-0 to 4 inches, very dark grayish-brown (10YR 3/2) clay; moder-
ate, fine, granular structure; hard, firm, sticky and plastic;
many fine roots; common fine black concretions; strongly
acid; clear, smooth boundary.


Este suelo generalmente no se presta para cosechas de
cultivo limpio. Su uso esti limitado mayormente a pastos,
bosques, o habitat de vida silvestre. Un area considerable
esti en caf6 abandonado y en brefiales. Algunas areas han
sido usadas para cosechas para el uso de la finca, ocasional-
mente, y otras areas estin en pastos nativos. El declive, el
escurrimiento, la erosi6n pasada, y el peligro de erosion en
el future son limitaciones. (Unidad de capacidad VIe-1;
grupos de bosques lol, lo2, lo3, lo4)
Humatas cascajoso arcilloso, 12 a 40 porciento de decline
(HuE).-Este suelo esti en las faldas y en las laderas a
trav6s de las alturas volcinicas. Tiene un perfil similar al
descrito como representative de la series, pero tiene frag-
mentos angulares, que varian desde 1/2 pulgadas hasta 2
pulgadas en diametro, que comprenden del 20 al 50 porcien-
to de la capa superficial. El escurrimiento es de median a
ripido, y la erosi6n es un peligro. La capacidad de retenci6n
de humedad es moderada, y la fertilidad es median.
Se incluyen pequefias areas de Humatas arcilloso que no
es cascajoso, y areas, especialmente en las cumbres, de
Consumo arcilloso. Estas areas comprenden el 5 porciento
o menos del cuerdaje.
El suelo se presta para cultivo occasional pero no continua-
do. Se ha usado mayormente para pastos natives, pero
algunas areas han sido sembrada de caiia de azlicar. Este
suelo es de laboreo un tanto dificil. Se require un manejo
cuidadoso para prevenir el deterioro de este suelo. El de-
clive, el escurrimiento, y el peligro de erosi6n son limita-
ciones. Las cosechas responded bien a las aplicaciones
abundantes de cal y abono. (Unidad de capacidad IVe-1;
grupos de bosques lol, lo2, lo3, lo4)

Serie Igualdad
La series Igualdad consiste de suelos de desagiie pobre
que son lentamente permeables. Estos suelos tienen una
arena gris a una profundidad de 24 hasta 40 pulgadas. Estin
en los llanos inundables de los rios. Se han formado en de-
positos aluviales recientes de textura limosa y arcillosa que
han sido lavados desde las alturas volcinicas y calizas. La
profundidad al nivel freitico es de 4 hasta 30 pulgadas. El
clima es h6medo. La lluvia es de 70 hasta 90 pulgadas, y la
temperature annual varia desde 770 hasta 79 F.
En un perfil representative la capa superficial es pardo
grisicea muy oscura, fuertemente Acida, de textura arcillosa
y de alrededor de 4 pulgadas de espesor. La parte superior
del subsuelo es gris muy oscura, medianamente acida,
firme, pegajosa y pl6stica, de textura arcillosa que tiene
manchas color pardo rojizas y grises. La parte inferior, has-
ta una profundidad de 24 pulgadas, es gris oscura, leve-
mente acida, firme, pegajosa y plistica, de textura arcillosa.
El substrato es gris verdoso oscuro, de textura areno-arcil-
losa. Bajo esta capa hay arena de color gris verdoso oscura
que tiene muchos fragments calcireos de caracoles.
La mayor parte del cuerdaje ha estado en caila de azicar
por largo tiempo.
Perfil representative de Igualdad arcilloso, 3.2 kil6metros
al oeste del pueblo de Afiasco, 50 metros al oeste del marca-
dor de kil6metros 2.2 en la carretera no. 115.
Ap-0 a 4 pulgadas, pardo grisfceo bien oscuro (10YR 3/2) arcilloso:
estructura granular, moderada fina; consistencia dura, fire,
pegajosa, plistica; raicillas abundantes; presencia comun de
concreciones negras y finas; fuertemente acida; limited claro
liso.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


B2-4 to 10 inches, very dark gray (10YR 3/1) clay; common, medium,
distinct mottles of reddish brown (5YR 4/3) and gray (5Y 6/1);
weak, fine, subangular blocky structure: pressure faces; firm,
sticky and plastic; common fine roots; common, fine, black
concretions; medium acid; clear, smooth boundary.
B3-10 to 24 inches, dark-gray (N 4/0) clay; dark-brown (10YR 4/3)
coatings on ped faces and in root channels; massive, firm,
sticky and plastic; few fine roots; slightly acid; pressure
faces; gradual, smooth boundary.
IIClg-24 to 30 inches, dark greenish-gray (5G 4/1) sandy clay; com-
mon, fine, distinct mottles of brown (7.5YR 4/4); massive;
firm, sticky and plastic; few fine roots; mildly alkaline; pres-
sure faces; gradual, smooth boundary.
IIC2g-30 to 60 inches +, dark greenish-gray (5G 4/1) sand and calcar-
eous shell fragments.
The solum ranges from 20 to 32 inches in thickness, and the depth to
calcareous sand ranges from 24 to 40 inches. The A horizon has a hue
of 2.5Y to 10YR, a value of 3, and a chroma of 1 to 3. The dominant
chromas in the B and C horizons are low. The Clg horizon ranges from
sandy clay to sandy clay loam in texture.


Igualdad clay (Ig).-This soil is nearly level. It is on the
flood plains of rivers, generally in the lowest areas away
from the riverbanks. It is subject to frequent flooding that
causes damage to crops. It is fertile. The water table is sea-
sonally high. The available water capacity is high.

Included in mapping were areas of Bajura clay and Colo-
so clay. These areas make up 5 percent or less of the
acreage.
This soil is suited to cultivated crops, and where properly
drained and managed, it is used for sugarcane. It is not easi-
ly worked. Flooding that causes crop damage, seasonal
water table, and waterlogging that continues after the soil
has been drained are severe limitations. The choice of
plants and the timing of tillage, planting, and harvesting are
restricted. Complex management practices are needed.
(Capability unit IIIw-2; not in a woodland group)



Jacana Series
The Jacana series consists of moderately deep, moderate-
ly well drained soils that are moderately slowly permeable.
These soils are on foot slopes and low hills. They formed in
fine-textured material weathered from basic volcanic rock.
The slope ranges from 5 to 12 percent. The climate is sem-
iarid. Rainfall amounts to 30 to 40 inches, and the annual
temperature ranges from 780 to 810 F.

In a representative profile the surface layer is dark-
brown, medium acid clay that contains a few fine rock frag-
ments and is about 10 inches thick. The subsoil, to a depth
of about 24 inches, is dark-brown, light yellowish-brown
and yellowish-brown, medium acid, firm, sticky and plastic
clay that contains a few fine rock fragments. The substra-
tum is yellowish-brown and light yellowish-brown, mildly
alkaline, firm, slightly sticky and plastic clay and clay loam
that contains a few fine pebbles. The depth to semiconsoli-
dated volcanic rock is 34 inches.


These soils have been planted to sugarcane for a long
time.


B2-4 a 10 pulgadas, gris bien oscuro (10YR 3/1) arcilloso; con man-
chas comunes, medianas, precisas, pardo rojizas (5YR 4/3);
consistencia firme, pegajosa, plastica; raicillas comunes; pre-
sencia comfin de concreciones negras y finas; medianamente
acido; limited claro liso.
B3-10 a 24 pulgadas, gris oscuro (N 4/0) arcilloso revestimiento pardo
oscuro (10YR 4/3) en los pianos de los peds y en las cavidades
de raices; estructura macisa; consistencia firme, pegajosa,
plastica; algunas raicillas; ligeramente Acido; pianos de pre-
si6n; limited gradual liso.
IIClg-24 a 30 pulgadas, gris verdoso oscuro (5G 4/1) areno-arcilloso
con manchas comunes, finas, precisas, pardas (7.5YR 4/6);
estructura macisa; consistencia firme, pegajosa, plastica;
algunas raicillas; suavement alcalino; pianos de presi6n; lim-
ite gradual liso.
IIC2g-30 a 60 pulgadas +, gris verdoso oscuro (5G 4/1) arenoso con
fragments de conchas calcAreas de caracoles.
El solum varia desde 20 hasta 32 pulgadas en espesor, y la profundi-
dad a la arena calcArea varia desde 24 hasta 40 pulgadas. El horizonte
A tiene matices de 2.5Y y 10YR, valor de 3, y cromas desde 1 hasta 3.
Las cromas dominantes en el horizonte B y C son bajas. El horizonte
Clg varia desde areno-arcilloso hasta areno-arcilloso 16mico en tex-
tura.

Igualdad arcilloso (Ig).-Este suelo es casi Ilano. Esta en
los llanos inundables de los rios, por lo general en las areas
mis bajas y lejanas del rio en si. Esta sujeto a inundaciones
frecuentes que causan perjuicios a las cosechas. Es f6rtil.
El nivel freatico esti peri6dicamente alto. La capacidad de
retenci6n de humedad es alta.
Se incluyen areas de Bajura arcilloso y de Coloso arcillo-
so. Estas areas alcanzan al 5 porciento o menos del cuerdaje
total.
Este suelo se presta para cosechas de cultivo limpio, y
cuando esta debidamente desaguado y manejado se usa para
la siembra de cania de az6car. No es de ficil laboreo. Inun-
daciones que causan perjuicios a las cosechas, el nivel frea-
tico peri6dicamente alto, y el encharcamiento que continia
adn despues de haber desaguado el suelo son limitaciones
several. La selecci6n de plants y el tiempo en que se puede
cultivar, sembrar, y cosechar son restrictos. Se requieren
prActicas complejas de manejo. (Unidad de capacidad IIIw-
2; no esti en un grupo de bosques)

Serie Jacana
La series JAcana consiste de suelos moderadamente pro-
fundos, moderadamente bien desaguados, y de permeabili-
dad moderadamente lenta. Estos suelos estin en faldas y en
montes bajos. Se han formado en materials de textura fina,
meteorizados de las rocas volcinicas bisicas. El declive
varia desde 5 hasta 12 porciento. El clima es semi-irido. La
Iluvia es de 30 hasta 40 pulgadas, y la temperature annual va-
ria desde 78 hasta 81 F.
En un perfil representative la capa superficial es pardo
oscura, medianamente Acida, de textura arcillosa, que con-
tiene algunos fragments finos de roca y que es de alrededor
de 10 pulgadas de espesor. El subsuelo, hasta una profundi-
dad de 24 pulgadas, es pardo oscuro, pardo amarilloso te-
nue, y pardo amarilloso, medianamente icido, firme, pegajo-
so, y plistico, de textura arcillosa, que contiene algunos
fragments finos de roca. El substrato es pardo amarilloso y
pardo amarilloso tenue, levemente alcalino, firme, leve-
mente pegajoso y plistico, de textura arcillosa y arcillosa
16mica, que contiene algunos fragments finos. La profun-
didad a la roca volcinica semi-consolidada es de 34 pulga-
das.
Estos suelos han sido sembrados de caria de azicar por
largo tiempo.







SOIL SURVEY


Representative profile of Jacana clay, 5 to 12 percent
slopes, 320 meters northwest of the town of Lajas.
Ap-0 to 10 inches, dark-brown (10YR 3/3) clay; weak, medium, gran-
ular structure; very firm, sticky and plastic; many fine roots;
few fine pebbles; few fine quartz grains; medium acid; clear,
wavy boundary.
B2-10 to 18 inches, mixed dark-brown (10YR 4/3) and light yellowish-
brown (10YR 6/4) clay; dark yellowish brown (10YR 4/4)
crushed; weak, medium, subangular blocky structure; firm,
sticky and plastic; few fine roots; few slickensides and
pressure faces; few fine pebbles; few fine quartz grains;
medium acid; clear, smooth boundary.
B3-18 to 24 inches, yellowish-brown (10YR 5/6) clay; weak, fine, sub-
angular blocky structure; firm, slightly sticky and plastic;
few fine roots; many fine pores; very few pressure faces and
slickensides; few fine pebbles; 10 percent of the material is
saprolite; few fine quartz grains; slightly acid; clear, smooth
boundary.
Cl-24 to 29 inches, yellowish-brown (10YR 5/6) clay; massive; firm,
slightly sticky and plastic; few fine roots; many fine pores;
few fine pebbles; 30 percent of this material is saprolite; few,
fine, black concretions; few fine quartz grains; mildly alka-
line; clear, smooth boundary.

C2-29 to 34 inches, light yellowish-brown (10YR 6/4) clay loam;
many, fine, distinct mottles of light reddish brown (5YR 6/4)
and pink (5YR 7/4); massive; very friable, slightly sticky and
slightly plastic; few fine roots; many fine pores; 50 percent of
the material is saprolite; moderately alkaline.
R-34 inches +, semiconsolidated volcanic rock.
The depth to semiconsolidated rock ranges from 24 to 36 inches.
The solum ranges from 20 to 30 inches in thickness. The Ap horizon
has a hue of 10YR to 5YR and a value and a chroma of 2 and 3. Reac-
tion in the A and B horizons ranges from slightly acid to medium acid.
The B horizon has a hue of 10YR, a value of 4 to 6, and a chroma of 3
to 6. It has weak subangular blocky structure that ranges from medium
to coarse in class. In places it has a few to very few slickensides.

Jacana clay, 5 to 12 percent slopes (JaC).-This soil is on
foot slopes and low hills. It is fertile and has high available
water capacity. Erosion is a hazard.

Included in mapping were spots of Descalabrado clay
loam. These spots make up 5 percent or less of the acreage.

Most of the acreage is in native pasture, but small areas
are occasionally planted to corn and tobacco. The crops
grow well in years when rainfall is above average but fail in
years when rainfall is below average. The choice of crops is
restricted, and very careful management is needed in clean-
cultivated areas. The soil is difficult to work. Slope and ero-
sion hazard are limitations, and the low rainfall is also unfa-
vorable. (Capability unit IVe-14; not in a woodland group)



Jaucas Series
The Jaucas series consists of deep, excessively drained
soils that are calcareous and rapidly permeable. These soils
occupy hummocky areas, above high tide, along the coast.
They formed in marine deposits of sand-sized material de-
rived from coral and seashells. The climate is semiarid.
Rainfall amounts to 20 to 30 inches, and the annual tempera-
ture ranges from 780 to 81 F.


Perfil representative de Jacana arcilloso, 5 a 12 porciento
de declive, 320 metros al noroeste del pueblo de Lajas.
Ap-0 a 10 pulgadas, pardo oscuro (10YR 3/3) arcilloso; estructura
granular d6bil median; consistencia bien firme, pegajosa y
plistica; abundancia de raicillas; algun cascajo fino; algunos
granules finos de cuarzo; medianamente acido, limited claro
ondulante.
B2-10 a 18 pulgadas, colors mixtos, pardo oscuro (10YR 4/3) y par-
do amarillento claro (10YR 6/4), arcilloso, color pardo amari-
llento oscuro (10YR 4/4) al frotarse; estructura bloque suban-
gular d6bil median; firme, pegajoso y plistico; algunas raici-
las; algunos pianos de resbalamiento y pianos de presi6n;
algun cascajo fino; algunos grfnulos finos de cuarzo; media-
namente Acido; limited claro liso.
B3-18 a 24 pulgadas, pardo amarillento (10YR 5/6) arcilloso; estruc-
tura bloque subangular debil fina; firme, levemente pegajosa
y plastica; algunas raicillas; abundantes poros finos y muy
pocos pianos de presi6n y pianos de resbalamiento; algun
cascajo fino; el 10 porciento por volume es saprolito; algu-
nos grinulos finos de cuarzo; ligeramente acido; limited claro
liso.
Cl-24 a 29 pulgadas, pardo amarillento (10YR 5/6) arcilloso; estruc-
tura macisa; consistencia firme, levemente pegajosa y plisti-
ca; algunas raicillas; abundante poros finos; algun cascajo
fino; el saprolito constitute el 30 porciento del volume de
este horizonte; pocas concreciones finas y negras; algunos
granulos finos de cuarzo; suavemente alcalino; limited claro
liso.
C2-29 a 34 pulgadas, pardo amarillento claro (10YR 6/4) arcilloso
16mico, abundantes manchas precisas, pardo rojizas tenues
(5YR 6/4) y rojas claras (5YR 7/4); macisa; consistencia bien
friable, levemente pegajoso y levemente plistico; algunas
raicillas; abundantes poros finos; el saprolito constitute el 50
porciento del horizonte; moderadamente alcalino.
R-34 pulgadas +, roca volcinica semi-consolidada.
La profundidad a la roca semi-consolidada varia desde 24 hasta 36
pulgadas. El solum varia desde 20 hasta 30 pulgadas en espesor. El
horizonte Ap tiene matices de 10YR a 5YR, valores y cromas de 2 y 3.
La reacci6n de los horizontes A y B varia desde levemente icida hasta
medianamente Acida. El horizonte B tiene matiz de 10YR, valores de 4
a 6, y cromas de 3 hasta 6. Tiene estructura subangular en bloques que
varia desde median hasta gruesa en clase. En algunos sitios tiene
pianos de resbalamiento que varian desde pocos hasta muy pocos.
Jacana arcilloso, 5 a 12 porciento de declive (JaC).-Este
suelo esti en las faldas y en montes bajos. Es f6rtil y tiene
una capacidad de retenci6n de humedad alta. La erosion es
un peligro.
Se incluyen areas pequefias de Descalabrado arcilloso
16mico. Estas areas alcanzan el 5 porciento o menos del
cuerdaje.
La mayor parte del cuerdaje esta en pastos natives, pero
pequefias areas se siembran ocasionalmente de maiz y taba-
co. Las cosechas crecen bien en aiios cuando la lluvia es
sobre el promedio, pero no prosperan cuando la lluvia es
bajo el promedio. La selecci6n de plants esti restrict, y se
require un manejo muy cuidadoso cuando se siembran de
cosechas de cultivo limpio. El suelo es de dificil laboreo. El
declive y el peligro de erosion son limitaciones, y la poca
luvia es tambi6n desfavorable. (Unidad de capacidad Ie-
14; no esti en un grupo de bosques)

Serie Jaucas
La series Jaucas consiste de suelos profundos, de desagiie
excesivo, que son calcireos y ripidamente permeables.
Estos suelos estin en areas monticuladas, a una elevaci6n
mis alta que la marea alta, a lo largo de la costa. Se han for-
mado en deposits marines de material arenoso derivado de
corales y conchas. El clima es semi-arido. La lluvia es de 20
hasta 30 pulgadas, y la temperature annual varia desde 78*
hasta 81 F.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


In a representative profile the surface layer is dark gray-
ish-brown, calcareous sand about 11 inches thick. The up-
per part of the substratum, to a depth of about 17 inches, is
very pale-brown, calcareous, loose sand. The lower part is
pinkish-white, calcareous, loose sand more than 60 inches
thick.
These soils are used for coconuts and Australian pine
trees.
Representative profile of Jaucas sand, on Mona Island,
150 meters south of police headquarters, 50 meters west of
Pozo del Portuguez (Portuguese's Well).
AI-0 to 11 inches, dark grayish-brown (IOYR 4/2) sand (shell frag-
ments); single grained; loose; many fine and medium roots;
strong effervescence; clear, smooth boundary.
CI-ll to 17 inches, very pale brown (IOYR 7/3) sand (shell frag-
ments); single grained; loose; few fine roots; strong efferves-
cence; clear, wavy boundary.
C2-17 to 60 inches +, pinkish-white (7.5YR 8/2) sand (shell frag-
ments); single grained; loose; strong effervescence.

In places the surface layer contains fine sand. The A horizon has a
hue of IOYR, a value of 4 and 5, and a chroma of 2. The C horizon has
a hue of IOYR and 7.5YR, a value of 6 to 8, and a chroma of 2 and 3.

Jaucas sand (Jd).-This soil is nearly level. It is close to
the beach at elevations above high tide. Permeability is rap-
id, the available water capacity is very low, and fertility is
very low.
Included in mapping were small spots of Coastal beach.
This soil is not suitable for cultivation. Its use is restricted
mainly to grazing and wildlife habitat. This soil is in coco-
nuts and an undergrowth of native pasture, low brush, and
some scattered Australian pine trees. Improvement of pas-
ture or range by such practices as fertilizing, seeding, and
controlling water is not practical because of the available
water capacity, the permeability, the fertility, and the low
rainfall. (Capability unit VIIs-2; not in a woodland group)



Jobos Series
The Jobos series consists of well-drained soils that are
strongly acid and moderately slowly permeable. These soils
have shallow root zone. They are underlain by compact,
reticulately mottled clay. The slope ranges from 2 to 5 per-
cent. The climate is subhumid. Rainfall amounts to 50 to 65
inches, and the annual temperature ranges from 760 to 780 F.


In a representative profile the surface layer is dark gray-
ish-brown, strongly acid sandy loam and contains a few,
fine, subrounded black concretions. This layer is about 10
inches thick. The subsoil, which is more than 50 inches
thick, is red and strong brown, strongly acid, very firm,
slightly sticky and plastic, compact clay that is mottled with
light gray. Nonindurated plinthite makes up 10 percent of
the soil material in this layer.


Most of the acreage is in coconuts and an undergrowth of
brushy pasture plants. A few areas are planted to subsist-
ence crops.


En un perfil representative la capa superficial es pardo
grisicea oscura, y la arena es calcarea, de alrededor de 11
pulgadas de espesor. La parte superior del substrato, hasta
una profundidad de alrededor de 17 pulgadas, es pardo bien
tenue, calcarea, de arena suelta. La parte inferior es blanca
rosada, calcarea, de arena suelta, que tiene mas de 60 pulga-
das de espesor.
Estos suelos se usan para cocos y para pino australiano.
Perfil representative de Jaucas arenoso, en la Isla de
Mona, 150 metros, al sur de los cuarteles de la policia, 50
metros al oeste del pozo del Portuguez.
A1--0 a 11 pulgadas, pardo grisiceo oscuro (10YR 4/2) compuesto de
fragments de conchas de caracoles tamafio arena; estructura
arena incoherente; consistencia suelta; abundancia de raices
y raicillas; efervescencia fuerte; limited claro liso.
Cl-1 a 17 pulgadas, pardo bien tenue (IOYR 7/3) compuesto de frag-
mentos de conchas de caracoles tamaho arena; estructura
arena incoherente; consistencia suelta; algunas raicillas; efer-
vescencia intense; limited claro ondulante.
C2-17 a 60 pulgadas +, blanco rosado (7.5YR 8/2); compuesto de
conchas, fragments de caracoles tamafo arena; estructura
arena incoherente; consistencia suelta; efervescencia inten-
sa.
En algunos sitios la capa superficial contiene arena fina. El horizonte
A tiene matiz de IOYR, valores de 4 y 5, y cromas de 2. El horizonte C
tiene matices de IOYR y 7.5YR, valores de 6 hasta 8, y cromas de 2 y
3.
Jaucas arenoso (Jd).-Este suelo es casi Ilano. Esti cerca
de la playa a elevaciones sobre la marea alta. La permeabili-
dad es rapida, la capacidad de retenci6n de agua es muy
baja, y la fertilidad es muy pobre.
Se incluyen areas pequefias de Playa Costanera.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esta restrict mayormente a pastoreo y habitat de
vida silvestre. Este suelo esti sembrado de palmas de cocos
con una vegetaci6n subcreciente de pastos nativos, brefiales
bajos y algunos pinos Australianos. El mejoramiento de
pastos y pastizales por practices tales como abonamiento,
siembra y el control del agua no es practice debido a la capa-
cidad de retenci6n de humedad, a la permeabilidad, a la fer-
tilidad, y a la poca lluvia. (Unidad de capacidad VIIs-2; no
esta en un grupo de bosques)

Serie Jobos
La series Jobos consiste de suelos de buen desagiie, que
son fuertemente acidos y con una permeabilidad moderada-
mente lenta. Estos suelos tienen una zona de raices poco
profundas. Bajo esta capa hay arcillas compactas, que tie-
nen manchas reticuladas. El declive varia desde 2 hasta 5
porciento. El clima es subh6medo. La lluvia es de 50 hasta
65 pulgadas, y la temperature annual varia desde 760 hasta 780
F.
En un perfil representative la capa superficial es pardo
grisacea oscura, fuertemente icida, de textura arenosa
16mica, y que contiene algunas concreciones finas negras
redondeadas. Esta capa es de alrededor de 10 pulgadas de
espesor. El subsuelo, que es de mas de 50 pulgadas de espe-
sor, es rojo y pardo fuerte, fuertemente icido, muy firme,
levemente pegajoso y plistico, de textura arcillosa y com-
pacta que tiene manchas color gris claro. Plintita no petrifi-
cada alcanza al 10 porciento del material de suelo en esta
capa.
La mayor parte del cuerdaje esti en cocos, con una vege-
taci6n sub-creciente de pastos y brefiales. Algunas areas
estin sembradas de cosechas para el uso de la finca.







SOIL SURVEY


Representative profile of Jobos sandy loam, 2 to 5 percent
slopes, 8 kilometers west of the town of Isabela, 15 meters
south of kilometer marker 9.1 Highway No. 459.

Ap-0 to 10 inches, sandy loam that is dark grayish brown (10YR 4/2)
moist and light brownish gray (10YR 6/2) dry; weak, medium,
subangular blocky structure parting to single grained; loose,
nonsticky and nonplastic; few fine roots; few, fine, subround-
ed, black concretions; strongly acid; abrupt, smooth bounda-
ry.
B21t-10 to 16 inches, red (10R 4/6) and strong-brown (7.5YR 5/6)
clay; strong, coarse, subangular blocky structure; very hard,
very firm, slightly sticky and plastic; few fine roots along
cleavage planes; thick, continuous, dark-brown clay films on
ped surfaces; strongly acid; 10 percent, by volume, is nonin-
durated plinthite; gradual, smooth boundary.
B22t-16 to 29 inches, red (10R 4/6) and strong-brown (7.5YR 5/6)
clay; few, fine, distinct mottles of light gray (10YR 7/1); mod-
erate, medium and coarse, subangular blocky structure; very
hard, very firm, slightly sticky and plastic; few fine roots;
continuous brown clay films on vertical cleavage planes and
patchy clay films on horizontal planes; few, fine, black con-
cretions; strongly acid; 10 percent, by volume is nodules of
nonindurated plinthite; gradual, wavy boundary.

B23t-29 to 34 inches, red (10YR 4/6), yellowish-brown (10YR 5/6), and
light-gray (10YR 7/2) clay; weak, coarse, subangular blocky
structure; very hard, very firm, slightly sticky and plastic;
very few roots; thin patchy clay films; strongly acid; less than
10 percent, by volume, is nonindurated plinthite; gradual,
smooth boundary.
B24t-34 to 64 inches +, red (10R 4/6), yellowish-brown (10YR 5/6),
and light-gray (10YR 7/2) clay; weak, coarse, subangular
blocky structure; very hard, very firm, slightly sticky and
plastic; very thin patchy clay films on ped faces; strongly
acid; less than 10 percent, by volume, is nonindurated plin-
thite.
The low-chroma mottles are inherited from the parent material and
are not the result of impeded drainage. Reaction ranges from strongly
acid to very strongly acid throughout the profile. Nodules of nonindur-
ated plinthite make up 5 percent, by volume, of the soil material within
20 inches of the surface. The A horizon ranges from 6 to 20 inches in
thickness. It has a hue oflOYR, a value of 4, and a chroma of 2 and 3.
The B2t horizon has varying proportions of red, strong brown, yellow-
ish brown, and light gray in a reticulate pattern. It has subangular
blocky structure that ranges from moderate to strong in grade and clay
films that range from thick and continuous to thin and patchy.

Jobos sandy loam, 2 to 5 percent slopes (JoB).-This soil is
on the northern Coastal Plains. It has a compact slowly
permeable subsoil. The available water capacity is low in
the surface layer, and fertility is low.

Included in mapping were small areas of Guerrero sand
and Bejucos sandy loam. These areas make up 10 percent or
less of the acreage.
This soil is not suitable for clean cultivation. Its use is re-
stricted mainly to pasture, coconuts, and wildlife habitat. It
has been mainly in coconuts and an undergrowth of native
pasture plants and low brush. The available water capacity
in the surface layer, the fertility, and the compact slowly
permeable subsoil are severe limitations that cannot be cor-
rected. (Capability unit VIs-25; not in a woodland group)


Perfil representative de Jobos arenoso 16mico, 2 a 5 por-
ciento de declive, 8 kil6metros al oeste del pueblo de Isabe-
la, 15 metros al sur del marcador de kil6metros 9.1 en la ca-
rretera no. 459.
Ap-0 a 10 pulgadas, pardo grisiceo oscuro (10YR 4/2) cuando hime-
do y gris pardo claro (10YR 6/2) cuando seco; arenoso 16mi-
co; estructura bloque subangular debil median, rompi6ndose
en arena incoherente; consistencia suelta, no pegajosa, no
plastica; algunas raicillas; algunas concreciones finas negras
y redondeadas; fuertemente acido; limited abrupto liso.
B21t-10 a 16 pulgadas, rojo (10R 4/6) y pardo fuerte (7.5YR 5/6) ar-
cilloso; estructura bloque subangular fuerte gruesa; consis-
tencia bien dura, bien firme, levemente pegajosa, plastic;
algunas raicillas en los pianos de rotura; peliculas gruesas,
continues y pardo oscuras de arcilla recubriendo la superficie
de los peds; fuertemente Acido; 10 porciento por volume de
plintita no petrificada; limited gradual liso.
B22t-16 a 29 pulgadas, rojo (10R 4/6) y pardo fuerte (7.5YR 5/6) ar-
cilloso con algunas manchas finas y precisas color gris claro
(10YR 7/1); estructura bloque subangular moderada median
y gruesa; consistencia bien dura, bien fire, levemente pega-
josa y plistica; algunas raicillas; presencia de peliculas con-
tinuas de arcilla color pardo en las grietas verticales y descon-
tinuas en las grietas horizontales; algunas concreciones finas,
negras; fuertemente Acido; 10 porciento por volume de
n6dulos de plintita no petrificada; limited gradual ondulante.
B23t-29 a 34 pulgadas, rojo (10R 4/6) pardo amarillento (10YR 5/6) y
gris claro (10YR 7/2) arcilloso; estructura bloque subangular
d6bil gruesa; consistencia bien dura y bien firme, levemente
pegajosa y plistica; muy pocas raicillas; mosaicos recubier-
tos de peliculas de arcilla finas y descontinuas; fuertemente
Acido; menos de 10 porciento por volume es plintita no petri-
ficada; limited gradual liso.
B24t-34 a 64 pulgadas +, rojo (10R 4/6) pardo amarillento (10YR 5/6)
y gris claro (10YR 7/2) arcilloso; estructura bloque subangu-
lar d6bil gruesa; consistencia bien dura, bien firme, leve-
mente pegajosa y plistica; mosaicos de peliculas de arcilla
bien finos recubriendo los pianos de los peds; menos de 10
porciento volume de plintita no petrificada.
Las manchas de cromas bajas son inherentes del material padre y no
el resultado de desagiie impedido. La reacci6n varia desde fuerte-
mente Acido hasta muy fuertemente Acido a trav6s de todo el perfil.
Nodulos de plintita no petrificada alcanzan al 5 porciento por volume
del material del suelo en las primeras 20 pulgadas desde la superficie.
El horizonte A varia desde 6 hasta 20 pulgadas en espesor. Tiene matiz
de 10YR, valor de 4, y cromas de 2 y 3. El horizonte B2t tiene propor-
ciones variables de colors rojos, pardo fuerte, pardo amarilloso, y
gris claro, en un patron reticulado. Tiene una estructura bloque suban-
gular que varia desde moderada hasta fuerte en grado, y las peliculas
de arcillas varian desde gruesas y continues hasta finas y descontinuas.
Jobos arenoso lomico, 2 a 5 porciento de declive (JoB).-
Este suelo esti en los llanos costaneros del norte. Tiene un
subsuelo compact y de permeabilidad lenta. La capacidad
de retenci6n de agua es baja en las capas superficial, y la
pertilidad es pobre.
Se incluyen areas pequefias de Guerrero arenoso y de
Bejucos arenoso 16mico. Estas areas alcanzan al 10 porcien-
to o menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esta restrict mayormente a pastos, cocos, y habitat
de vida silvestre. Se ha usado mayormente en cocos con una
vegetaci6n sub-creciente de pastos nativos y de brefiales
bajos. La capacidad de retenci6n de humedad en la capa
superficial, la fertilidad, y el subsuelo compact de permea-
bilidad lenta son limitaciones several que no pueden corre-
girse. (Unidad de capacidad VIs-25; no estf en un grupo de
bosques)







MAYAGUEZ AREA OF WESTERN PUERTO RICO


Juncal Series
The Juncal series consists of deep, moderately well
drained soils that are moderately permeable. These soils are
on foot slopes. They formed in sediments washed from the
adjacent limestone hills. The slope ranges from 12 to 20 per-
cent. The climate is humid. Rainfall amounts to 80 to 90
inches, and the annual temperature ranges from 760 to 790 F.

In a representative profile the surface layer is dark gray-
ish-brown, medium acid clay about 8 inches thick. The up-
per part of the subsoil is dark yellowish-brown and yellow-
ish-brown, mildly alkaline, firm, slightly sticky and plastic
clay. The lower part, to a depth of about 49 inches, is
brownish-yellow and yellowish-brown, moderately alkaline,
firm, slightly sticky and plastic clay that has a few mottles of
light greenish gray and red. The substratum is thick, brown-
ish-yellow, calcareous, friable, slightly sticky and plastic
silty clay loam that has many fine mottles of light gray.



Sugarcane is the principal crop grown, but small areas are
in pasture, brush, and subsistence crops.

Representative profile of Juncal clay, 12 to 20 percent
slopes, eroded, 4.8 kilometers north of the town of San
Sebastian, 2.4 kilometers on Highway No. 447 from the
junction of Highway No. 447 and Highway No. 119, 220
meters south on paved road.
Ap-0 to 8 inches, dark grayish-brown (10YR 4/2) clay; weak, coarse,
subangular blocky structure; firm, slightly sticky and plastic;
many fine roots; medium acid; clear, wavy boundary.
B21t-8 to 14 inches, dark yellowish-brown (10YR 4/4) clay; moder-
ate, medium, subangular blocky structure; firm, slightly
sticky and plastic; common fine roots; thin patchy clay films;
mildly alkaline; clear, wavy boundary.
B22t-14 to 20 inches, yellowish-brown (10YR 5/6) clay; moderate,
medium, subangular blocky structure; firm, slightly sticky
and plastic; few fine roots; thin discontinuous clay films;
mildly alkaline; clear, wavy boundary.
B23t-20 to 33 inches, brownish-yellow (10YR 6/6) clay; common,
fine, distinct mottles of yellowish red (5YR 5/8); moderate,
medium and fine, subangular blocky structure; firm, slightly
sticky and plastic; few fine roots; thin patchy clay films; few
black stains; mildly alkaline; clear, wavy boundary.

B24t-33 to 43 inches, brownish-yellow (10YR 6/6) clay; common,
fine, prominent mottles of light greenish gray (5G7/1) and
few, fine, prominent mottles of red (2.5YR 5/6); moderate,
medium and fine, subangular blocky structure; firm, slightly
sticky and plastic; few fine roots; thin patchy clay films; few
black concretions; few black stains; neutral; clear, wavy
boundary.

B25t-43 to 49 inches, yellowish-brown (10YR 5/6) clay; few, fine,
prominent mottles of light greenish gray (5G 7/1) and red
(2.5YR 5/6); moderate, fine, subangular blocky structure;
firm, slightly sticky; very few roots; thin patchy clay films;
few black stains; moderately alkaline; clear, wavy boundary.


C-49 to 66 inches +, brownish-yellow (10YR 6/8) silty clay loam;
many, fine, faint mottles of light gray (10YR 7/2); yellow
(10YR 7/8) crushed; massive; friable, slightly sticky and plas-
tic; fine lime makes up 25 to 35 percent of the material; strong
effervescence.


Serie Juncal
La series Juncal consiste de suelos profundos de desagiie
moderadamente bueno, que son moderadamente permea-
bles. Estos suelos estan en las faldas. Se han formado en
sedimentos lavados de los montes calizos adyacentes. El
declive varia desde 12 hasta 20 porciento. El clima es h6me-
do. La lluvia es de 80 a 90 pulgadas, y la temperature annual
varia desde 76 hasta 790 F.
En un perfil representative la capa superficial es pardo
grisicea oscura, medianamente acida, de textura arcillosa, y
de alrededor de 8 pulgadas de espesor. La parte superior del
subsuelo es pardo amarillosa oscura y pardo amarillosa,
suavemente alcalina, firme, levemente pegajosa y plistica,
de textura arcillosa. La parte inferior hasta una profundidad
de 49 pulgadas, es amarillo parda y parda amarillosa, mode-
radamente alcalina, firme, ligeramente pegajosa y plistica
de textura arcillosa, que tiene algunas manchas gris verdo-
sas claras y rojas. El substrato es grueso, amarillo pardo,
calcireo, friable, levemente pegajoso y plistico, de textura
limo-arcilloso 16mica y que tiene muchas manchas de color
gris claro.
La principal cosecha es cafia de azucar, pero areas pe-
quefias estan en pastos, brefiales, y cosechas para el uso en
la finca.
Perfil representative de Juncal arcilloso, 12 a 20 porciento
de declive, erodado, 4.8 kil6metros al norte del pueblo de
San Sebastian, 2.4 kil6metros en la carretera 447, desde la
union de las carreteras nos. 447 y 119, 220 metros al sur en
un camino pavimentado.
Ap-0 a 8 pulgadas, pardo-grisAceo oscuro (10YR 4/2) arcilloso; es-
tructura bloque subangular d6bil gruesa; consistencia firme,
levemente pegajosa, plastica; raicillas abundantes; mediana-
mente acido; limited claro ondulante.
B21t-8 a 14 pulgadas, pardo-amarillento oscuro (10YR 4/4) arcilloso;
estructura bloque subangular moderada median; consisten-
cia firme, levemente pegajosa, plastica; raicillas comunes;
mosaicos recubiertos de peliculas delgadas de arcilla; suave-
mente alcalino; limited claro ondulante.
B22t-14 a 20 pulgadas, pardo-amarillento (10YR 5/6) arcilloso; es-
tructura bloque subangular moderada median; consistencia
firme, levemente pegajosa, plastica; algunas raicillas; pelicu-
las delgadas descontinuas de arcilla; suavemente alcalino;
limited claro ondulante.
B23t-20 a 33 pulgadas, amarillo pardo (10YR 6/6) arcilloso, con
manchas comunes, finas y precisas color rojas amarillentas
(5YR 5/8); estructura bloque subangular moderada median y
fina; consistencia firme, levemente pegajosa, plistica; algu-
nas raicillas; mosaicos revestidos de peliculas delgadas des-
continuas de arcilla; algunas manchas negras; suavemente
alcalino; limited claro ondulante.
B24t-33 a 43 pulgadas, amarillo-pardo (10YR 6/6) con algunas man-
chas finas y conspicuas color gris verdosas claras, (5G 7/1) y
algunas finas y conspicuas color rojas (2.5YR 5/6); estructura
bloque subangular moderada median y fina; consistencia
firme, levemente pegajosa, plistica; algunas raicillas; mosai-
cos recubiertos de peliculas delgadas descontinuas de arcilla;
algunas concreciones negras; algunas manchas negras; limited
claro ondulante.
B25t-43 a 49 pulgadas, pardo amarillento (10YR 5/6) arcilloso, con
algunas manchas finas y conspicyas color gris verdoso claras
(5G 7/1) y algunas finas y conspicuas color rojas (2.5YR 5/6);
estructura bloque subangular moderada fina; consistencia
firme, levemente pegajosa; muy pocas raicillas; mosaicos re-
cubiertos de peliculas delgadas descontinuas de arcilla; al-
gunas manchas negras; moderadamente alcalino; limited claro
ondulante.
C--49 a 66 pulgadas +, amarillo pardo (10YR 6/8) limo arcilloso 16mi-
co, con muchas manchas finas y tenues color gris claro (10YR
7/2), color al frotarse amarillo (10YR 7/8); macisa; consisten-
cia friable, levemente pegajosa, plastica; contiene 25 a 35
porciento de cal fina; efervescencia fuerte.






SOIL SURVEY


The solum ranges from 36 to 60 inches in thickness and from medi-
um acid to moderately alkaline. The A horizon ranges from medium
acid to slightly acid. It has a hue of 7.5YR to 10YR, a value of 4, and a
chroma of 2 to 3. The B2t horizon has moderate subangular blocky
structure that ranges from fine to medium in class. The C horizon is
calcareous and has effervescence that ranges from slight to strong.

Juncal clay, 12 to 20 percent slopes, eroded (JuD2).-This
soil is on foot slopes in the limestone area. It is fertile and
has high available water capacity. Runoff is medium, and
erosion is a hazard.
Included in mapping were areas of Colinas clay loam and
Cidral clay and small areas where the slope range is 5 to 12
percent. These areas make up 10 percent or less of the
acreage.
This soil has been used mainly for sugarcane, but some
areas are in native pasture and brush, and other small areas
have been used for subsistence crops. This soil is suited to
only restricted amounts of clean cultivation. Slope, runoff,
past erosion, and hazard of further erosion are imitations.
Special management practices are needed in cultivated
areas. This soil is somewhat difficult to work. (Capability
unit IIIe-19; woodland group 1o5)


Lares Series
The Lares series consists of deep, moderately well
drained soils that are very strongly acid and moderately
permeable. These soils are on old terraces. They formed in
material washed from the volcanic hills. The slope ranges
from 0 to 20 percent. The climate is humid. Rainfall
amounts to 70 to 90 inches, and the annual temperature
ranges from 72 to 790 F.
In a representative profile the surface layer is dark-
brown, very strongly acid silty clay about 9 inches thick.
The subsoil, to a depth of about 29 inches, is light yellowish-
brown and yellowish-brown, strongly acid, firm, slightly
sticky and plastic clay. This layer has a few fine mottles of
red and yellowish brown and common fine mottles of very
pale brown. The lower part of the subsoil is dark-red, very
strongly acid, slightly sticky and plastic clay mottled with
yellowish brown. The substratum, to a depth of more than
71 inches, consists of very strongly acid, friable, weathered
rock fragments variegated with yellowish brown, red, and
greenish gray.

These soils have been in sugarcane for many years, but
some small areas are in pasture and subsistence crops.

Representative profile of Lares clay, 0 to 5 percent
slopes, eroded, 1.6 kilometers northwest of the town of
Anasco, 90 meters southeast of kilometer marker 143.6 on
Highway No. 2.
Ap-0 to 9 inches, dark-brown (10YR 4/3) clay; weak, fine, granular
structure; slightly hard, friable, slightly sticky and slightly
plastic; common fine roots; very strongly acid; clear, smooth
boundary.
Bl-9 to 14 inches, light yellowish-brown(10YR 6/4) and grayish-
brown (10YR 5/2) clay; weak, medium, subangular blocky
structure; friable, slightly sticky and plastic; common fine
roots; thin patchy clay films; few fine concretions; very
strongly acid; clear, smooth boundary.


El solum varia desde 36 hasta 60 pulgadas en espesor, y desde medi-
anamente Acido hasta moderadamente alcalino. El horizonte A varia
desde medianamente acido hasta levemente acido. Tiene matices de
7.5YR a 10YR, valor de 4, y cromas de 2 y 3. El horizonte B2t tiene
estructura subangular en bloque moderada que varia desde fina hasta
median en clase. El horizonte C es calcareo y tiene efervescencia que
varia desde ligera hasta fuerte.
Juncal arcilloso, 12 a 20 porciento de declive, erodado
(JuD2).-Este suelo esti en las faldas en el area caliza. Es
f6rtil y tiene una capcidad de retenci6n de humedad alta. El
escurrimiento es median, y la erosi6n es un peligro.
Se incluyen areas de Colinas arcilloso 16mico y de Cidral
arcilloso, y pequefias areas donde el declive es de 5 a 12
porciento. Estas areas alcanzan al 10 porciento o menos del
cuerdaje total.
Este suelo ha sido usado mayormente para caria de azu-
car, pero algunas areas estin en pastos nativos y en bre-
fiales, y otras areas pequefias se han usado para cosechas
para el uso de la finca. El cultivo limpio en este suelo debe
ser restringido. El declive, el escurrimiento, la erosion pasa-
da, y el peligro de erosi6n en el future son limitaciones.
Pricticas de manejo especiales se requieren cuando se culti-
van estas areas. El suelo es de laboreo un tanto dificil. (Uni-
dad de capacidad IIIe-19; grupo de bosques lo5)

Serie Lares
La series Lares consiste de suelos profundos, de modera-
damente buen desagiie, que son muy fuertemente Acidos y
moderadamente permeables. Estos suelos estan en terrazas
viejas. Se han formado en materials lavados desde los
montes volcAnicos. El declive varia desde 0 hasta 20 por-
ciento. El clima es htmedo. La lluvia es de 70 hasta 90 pul-
gadas, y la temperature annual varia desde 720 hasta 79 F.
En un perfil representative la capa superficial es pardo
oscura, muy fuertemente Acida, de texture limo-arcillosa y
de alrededor de 9 pulgadas de espesor. El subsuelo, hasta
una profundidad de 29 pulgadas, es pardo amarilloso tenue,
fuertemente Acido, firme, levemente pegajoso y plastico, de
textura arcillosa. Esta capa tiene algunas manchas finas co-
lor rojo y pardo amarilloso, y manchas comunes finas de
color pardo muy tenue. La parte inferior del subsuelo es
color rojo oscuro, muy fuertemente Acida, levemente pega-
josa y plastica, de textura arcillosa que tiene manchas pardo
amarillosas. El substrato, hasta una profundidad de mis de
6 pies, consiste de fragments de rocas meteorizados, muy
fuertemente Acido, friable, veteados con colors pardo-
amarillosos, rojos, y gris verdoso.
Estos suelos han estado en cafia de az6car por muchos
afios, pero areas pequefias estin en pastos y en cosechas
para el uso de la finca.
Perfil representative de Lares arcilloso, 0 a 5 porciento de
declive, erodado, 1.6 kil6metros al noroeste del pueblo de
Afiasco, 90 metros al sureste del marcador de kil6metros
143.6, en la carretera no. 2.
Ap-0 a 9 pulgadas, pardo oscuro (10YR 4/3) arcilloso; estructura
granular d6bil fina; consistencia levemente dura, friable,
levemente pegajosa, levemente plastic; raicillas comunes;
bien fuertemente icido; limited claro liso.
Bl-9 a 14 pulgadas, pardo amarillento claro (10YR 6/4) y pardo
grisfceo (10YR 5/2) arcilloso; estructura bloque subangular
d6bil median; consistencia friable, levemente pegajosa.
plastica; raicillas comunes; mosaicos revestidos de peliculas
finas de arcilla; algunas concreciones finas; bien fuertemente
Acido; limited claro ondulante.








MAYAGUEZ AREA OF WESTERN PUERTO RICO


B2t-14 to 20 inches, light yellowish-brown (10YR 6/4) clay; few, fine,
prominent mottles of dark red (10R 3/6), common, fine, faint
mottles of very pale brown (10YR 7/3), and few, fine, faint
mottles of yellowish brown (10YR 5/6); moderate, medium,
subangular blocky structure; firm, slightly sticky and plastic;
few fine roots; thin continuous clay films; common, fine and
medium, partly weathered angular rock fragments; strongly
acid; clear, smooth boundary.
B31-20 to 29 inches, yellowish-brown (10YR 5/6) clay; few, fine,
prominent mottles of dark red (IOR 3/6) and red (10R 4/8) and
few, fine, faint mottles of light gray (10YR 7/2); weak, fine
and medium, subangular blocky structure; firm, slightly
sticky and plastic; few fine roots; many weathered rock frag-
ments; few hard, slightly weathered, angular rock fragments;
very strongly acid; gradual, smooth boundary.
B32-29 to 45 inches, dark-red (10R 3/6) clay; few fine, prominent
mottles of greenish gray (5GY 6/1) and common, medium,
distinct mottles of yellowish brown (10YR 5/6); red (10R 5/6)
crushed; weak, coarse, subangular blocky structure; firm.
slightly sticky and plastic; very strongly acid; gradual,
smooth boundary.
C-45 to 71 inches +, clay and weathered rock fragments that are var-
iegated with yellowish brown (10YR 5/6), red (10R 4/6), and
greenish gray (5GY 6/1); massive; friable, slightly sticky and
slightly plastic; common, fine, hard rock fragments; very
strongly acid.

The solum ranges from 34 to 53 inches in thickness. The horizon of
clay accumulation is more than 10 inches but less than 50 inches thick.
The depth to mottles that have a chroma of 2 or less ranges from 18 to
30 inches. Reaction ranges from strongly acid to very strongly acid.
The A horizon has a hue of 7.5YR and 10YR, a value of 4, and a chro-
ma of 3 and 4. The B horizon has dominantly red, yellow, and brown
mottles. The B2t horizon is dominantly clay and silty clay and has a
hue of 10YR, 7.5YR, and 5YR, a value of 4 to 6, and a chroma of 4 and
higher. It has thin clay films that range from continuous to patchy. Its
structure ranges from fine to medium in class and from moderate to
strong in grade.

Lares clay, 0 to 5 percent slopes, eroded (LaB2).-This soil
is on terraces of the volcanic uplands. It has the profile de-
scribed as representative of the series. The available water
capacity is high, and fertility is medium. Erosion is a moder-
ate hazard.
Included in mapping were small spots of Mani clay.
This soil is suitable for clean cultivation. A large acreage
has been planted to sugarcane for a long time, but some
areas are in pasture and subsistence crops. The choice of
plants is restricted, and moderate management practices are
needed. The slope, hazard of further erosion, and unfavora-
ble workability are limitations. The soil is somewhat difficult
to work. Careful management is needed to prevent deterio-
ration of the soil. Crops respond well to heavy applications
of lime and fertilizer. (Capability unit IIe-10; not in a wood-
land group)

Lares clay, 5 to 20 percent slopes, eroded (LaD2).-This
soil is on the tops and sides of terraces in the volcanic up-
lands. It has a profile similar to the one described as repre-
sentative of the series, but the combined surface layer and
subsoil are slightly thinner as a result of sheet erosion. The
surface layer consists of 4 to 6 inches of brown clayey mate-
rial. The subsoil has variegated colors and is 15 to 25 inches
thick. As a result of erosion, the surface layer consists of a
mixture of materials from the original surface layer and part
of the subsoil. The available water capacity is high, and fer-
tility is medium. Erosion is a hazard.


B2t-14 a 20 pulgadas, pardo amarillento claro (10YR 6/4) arcilloso;
con algunas manchas finas, conspicuas rojas oscuras (10R 3/
6) manchas comunes finas y tenues color pardo muy pilido
(10YR 7/3) y algunas manchas finas y tenues color pardo-
amarillentas; consistencia firme, levemente pegajosa, plAsti-
ca; algunas raicillas; peliculas finas continues de arcilla; frag-
mentos comunes y finos de roca parcialmente meteorizada;
fuertemente fcido; limited claro liso.
B31-20 a 29 pulgadas, pardo amarillento (10YR 5/6) arcilloso; con
algunas manchas finas y prominentes rojas oscuras (10R 3/6)
y rojas (10R 4/8); algunas otras finas y tenues color gris claras
(10YR 7/2); estructura bloque subangular d6bil fina y medi-
ana; consistencia firme, levemente pegajosa, plistica; algun-
as raicillas; abundantes fragments meteorizados de roca;
algunos fragments angulares de roca dura levemente meteo-
rizada; muy fuertemente Acido; limited gradual liso.
B32-29 a 45 pulgadas, rojo oscuro (10R 3/6) arcilloso; con algunas
manchas comunes medianas y precisas color pardo-amari-
lentas (10YR 5/6), color al frotarse rojo (10R 5/6) estruc-
tura bloque subangular, d6bil gruesa; consistencia firme,
levemente pegajosa, plastica; bien fuertemente Acido; limited
,gradual liso.
C-45 a 71 pulgadas +, fragments de roca meteorizada, veteados en
diversos colors como pardo amarillento (10YR 5/6), rojo
(10R 4/6) y gris verdoso (5GY 6/1); arcilloso; estructura ma-
cisa; consistencia friable, levemente pegajosa, levemente
plfstica; fragments comunes y finos de roca dura; bien
fuertemente Acido.
El solum varia desde 34 hasta 53 pulgadas en espesor. El horizonte
de acumulaci6n de arcillas tiene mAs de 10 pulgadas, pero menos de 50
pulgadas en espesor. La profundidad a las manchas que tienen cromas
de 2 o menos varia desde 18 hasta 30 pulgadas. La reacci6n varia desde
fuertemente icida hasta bien fuertemente Acida. El horizonte A tiene
matices de 7.5YR y 10YR, valores de 4, y cromas de 3 y 4. El hori-
zonte B tiene manchas que son dominantemente rojas, amarillas, y
pardas. El horizonte B2t es de textura dominantemente arcillosa y
limo-arcillosa, y tiene matices de 10YR, 7.5YR, y 5YR, valores de 4 a
6, y cromas de 4 y mas altas. Tiene peliculas de arcilla finas que varian
desde continues a descontinuas. La estructura varia desde fina hasta
median en clase, y desde moderada hasta fuerte en grado.
Lares arcilloso, 0 a 5 porciento de declive, erodado (LaB2).
-Este suelo esti en terrazas en las alturas volcinicas.
Tiene el perfil descrito como representative de la series. La
capacidad de retenci6n de agua es alta, y la fertilidad es
median. La erosion es un peligro moderado.
Se incluyen pequefias areas de Mani arcilloso.
Este suelo se presta para cosechas de cultivo limpio. Un
cuerdaje considerable se ha sembrado de caiia de azlicar por
un largo tiempo, pero algunas areas estin en pastos y en
cosechas para el uso de la finca. La selecci6n de plants es
restrict, y se requieren practices de manejo moderadas. El
declive, el peligro de erosi6n future, y el laboreo desfavora-
ble son limitaciones. Este suelo es de laboreo un tanto difi-
cil. Se require un manejo cuidadoso para prevenir el dete-
rioro del suelo. Las cosechas responded bien a aplicaciones
abundantes de cal y de abonos. (Unidad de capacidad lie-
10; no esti en un grupo de bosques)
Lares arcilloso, 5 a 20 porciento de declive, erodado (La-
D2).-Este suelo esti en la parte alta y en los lados de las
terrazas en las alturas volcinicas. Tiene un perfil similar al
descrito como representative de la series, pero el espesor
combinado de la capa superficial y del subsuelo es leve-
mente mis delgado como un resultado de la erosi6n laminar.
La capa superficial consiste de cuatro a seis pulgadas de
material arcilloso color pardo. El subsuelo tiene colors
veteados y es desde 15 hasta 25 pulgadas en espesor. Como
un resultado de la erosi6n, la capa superficial consiste de
una mezcla de materials procedentes de la capa superficial
original y de parte del subsuelo. La capacidad de retenci6n
de humedad es alta, y la fertilidad es median. La erosi6n es
un peligro.







SOIL SURVEY


Included in mapping were spots of Lares clay, 2 to 5 per-
cent slopes.
The limitations to the use of this soil for clean cultivation
are severe. This soil has been used for sugarcane for a long
time, but small areas are now in native pasture or low brush
and some areas are in subsistence crops. The soil is some-
what difficult to work. Slope, past erosion, and hazard of
further erosion are limitations. Crops respond well to heavy
applications of lime and fertilizer. (Capability unit IIIe-1;
not in a woodland group)



Levelled Clayey Land
Levelled clayey land (Lc) is in areas that have been so
disturbed by earthmoving equipment that it is not possible
to recognize the original soil. The profile of the original soil
has been changed by cutting, filling, and leveling. The origi-
nal slope ranged from 4 to 40 percent.
The present soil material consists mainly of well-drained,
strongly acid, moderately permeable, slightly sticky and
plastic clay. The underlying material is highly weathered
and is easily worked with earthmoving equipment. The
depth to hard rock is more than 6 feet.
In most places the sites provided by cut and fill operations
are used for residences and light industry. Special care
should be taken on sites used for residences because the soil
material has poor compactibility. (Capability unit VIIIs-2;
not in a woodland group)


Levelled Clayey Land, Shallow
Levelled clayey land, shallow (Le) is made up of materi-
als that have been so reworked by earthmoving equipment
that it is not possible to recognize the original soil. The pro-
file of the original soil has been changed by cutting, filling,
and leveling. The original slope ranged from 12 to 60 per-
cent.
The present soil material consists of red, well-drained,
moderately permeable, granular, very strongly acid, nonex-
panding clay. It is shallow to underlying, semiconsolidated
serpentinite rock.
Building sites for residences and trafficways have been
provided by cut and fill operations, which are costly. (Capa-
bility unit VIIIs-2; not in a woodland group)


Levelled Land, Frequently Flooded
Levelled land, frequently flooded (Lf) is on flood plains
along rivers. It consists of materials that have been so dis-
turbed by earthmoving equipment that the original soil can-
not be recognized.


Se incluyen areas pequefias de Lares arcilloso, 2 a 5 por-
ciento de declive.
Las limitaciones de este suelo para cosechas de cultivo
limpio son several. El suelo ha sido usado para la siembra
de cafia de azucar por un largo tiempo, pero areas pequeiias
estin ahora en pastos nativos y en brefiales bajos y algunas
areas estan en cosechas para el uso de la finca. Este suelo es
de laboreo un tanto dificil. El declive, la erosi6n pasada, y el
peligro de erosi6n en el future son limitaciones. Las cose-
chas responded bien a aplicaciones fuerte de cal y de abo-
nos. (Unidad de capacidad IIIe-1; no esti en un grupo de
bosques)

Tierra Nivelada Arcillosa
Tierra nivelada arcillosa (Lc) esti en areas que ban sido
tan perturbadas por maquinarias movedoras de tierra que es
impossible reconocer el suelo original. El perfil del suelo
original ha sido muy cambiado por cortes, rellenos, y nivela-
ci6n. Las pendientes originales fluctuaban envre 4 y 40 por-
ciento.
El material del suelo existente es mayormente de buen
desague, fuertemente Acido, moderadamente permeable,
levemente pegajoso y plistico, de textura arcillosa. El mate-
rial subyacente esta altamente meteorizadlo y es de ficil
laboreo por la maquinaria movedora de vierra. La profundi-
dad a la roca dura es de mis de 6 pies.
En la mayoria de los sitios donde se han efectuado opera-
ciones de corte y relleno estos sitios se usan para residen-
cias y para industries livianas. Se require un cuidado espe-
cial en sitios que van a ser usados para residencias porque el
material del suelo tiene una compactaci6n muy pobre. (Uni-
dad de capacidad VIIIs-2; no esti en un grupo de bosques)

Tierra Nivelada Arcillosa, Poco Profunda
Tierra nivelada arcillosa, poco profunda (Le), se com-
pone de materials que han sido tan perturbados por maqui-
naria movedora de tierra que se hace impossible reconocer el
suelo original. El perfil del suelo original ha sido cambiado
por cortes, rellenos, y nivelaci6n. El decline original variaba
desde 12 hasta 60 porciento.
El material del suelo al present es rojo, de buen desague,
moderadamente permeable, granular, muy fuertemente ici-
do, de arcillas no expansivas. Es poco profundo, a la roca
serpentinita semi-concolidada subyacente;
Sitios para enclavar residencias y para establecer carre-
teras han sido provistos por operaciones de corte y relleno,
que son muy costosas. (Unidad de capacidad VIIs-2; no esta
en un grupo de bosques)

Tierra Nivelada, Inundable con Frecuencia
Tierra nivelada, inundable con frecuencia (Lf) esti en los
llanos inundables a lo largo de los rios. Consiste de material
que ha sido tan perturbado por maquinaria movedora de
tierra, al extreme que no es possible reconocer el suelo origi-
nal.







SOIL SURVEY


Included in mapping were spots of Lares clay, 2 to 5 per-
cent slopes.
The limitations to the use of this soil for clean cultivation
are severe. This soil has been used for sugarcane for a long
time, but small areas are now in native pasture or low brush
and some areas are in subsistence crops. The soil is some-
what difficult to work. Slope, past erosion, and hazard of
further erosion are limitations. Crops respond well to heavy
applications of lime and fertilizer. (Capability unit IIIe-1;
not in a woodland group)



Levelled Clayey Land
Levelled clayey land (Lc) is in areas that have been so
disturbed by earthmoving equipment that it is not possible
to recognize the original soil. The profile of the original soil
has been changed by cutting, filling, and leveling. The origi-
nal slope ranged from 4 to 40 percent.
The present soil material consists mainly of well-drained,
strongly acid, moderately permeable, slightly sticky and
plastic clay. The underlying material is highly weathered
and is easily worked with earthmoving equipment. The
depth to hard rock is more than 6 feet.
In most places the sites provided by cut and fill operations
are used for residences and light industry. Special care
should be taken on sites used for residences because the soil
material has poor compactibility. (Capability unit VIIIs-2;
not in a woodland group)


Levelled Clayey Land, Shallow
Levelled clayey land, shallow (Le) is made up of materi-
als that have been so reworked by earthmoving equipment
that it is not possible to recognize the original soil. The pro-
file of the original soil has been changed by cutting, filling,
and leveling. The original slope ranged from 12 to 60 per-
cent.
The present soil material consists of red, well-drained,
moderately permeable, granular, very strongly acid, nonex-
panding clay. It is shallow to underlying, semiconsolidated
serpentinite rock.
Building sites for residences and trafficways have been
provided by cut and fill operations, which are costly. (Capa-
bility unit VIIIs-2; not in a woodland group)


Levelled Land, Frequently Flooded
Levelled land, frequently flooded (Lf) is on flood plains
along rivers. It consists of materials that have been so dis-
turbed by earthmoving equipment that the original soil can-
not be recognized.


Se incluyen areas pequefias de Lares arcilloso, 2 a 5 por-
ciento de declive.
Las limitaciones de este suelo para cosechas de cultivo
limpio son several. El suelo ha sido usado para la siembra
de cafia de azucar por un largo tiempo, pero areas pequeiias
estin ahora en pastos nativos y en brefiales bajos y algunas
areas estan en cosechas para el uso de la finca. Este suelo es
de laboreo un tanto dificil. El declive, la erosi6n pasada, y el
peligro de erosi6n en el future son limitaciones. Las cose-
chas responded bien a aplicaciones fuerte de cal y de abo-
nos. (Unidad de capacidad IIIe-1; no esti en un grupo de
bosques)

Tierra Nivelada Arcillosa
Tierra nivelada arcillosa (Lc) esti en areas que ban sido
tan perturbadas por maquinarias movedoras de tierra que es
impossible reconocer el suelo original. El perfil del suelo
original ha sido muy cambiado por cortes, rellenos, y nivela-
ci6n. Las pendientes originales fluctuaban envre 4 y 40 por-
ciento.
El material del suelo existente es mayormente de buen
desague, fuertemente Acido, moderadamente permeable,
levemente pegajoso y plistico, de textura arcillosa. El mate-
rial subyacente esta altamente meteorizadlo y es de ficil
laboreo por la maquinaria movedora de vierra. La profundi-
dad a la roca dura es de mis de 6 pies.
En la mayoria de los sitios donde se han efectuado opera-
ciones de corte y relleno estos sitios se usan para residen-
cias y para industries livianas. Se require un cuidado espe-
cial en sitios que van a ser usados para residencias porque el
material del suelo tiene una compactaci6n muy pobre. (Uni-
dad de capacidad VIIIs-2; no esti en un grupo de bosques)

Tierra Nivelada Arcillosa, Poco Profunda
Tierra nivelada arcillosa, poco profunda (Le), se com-
pone de materials que han sido tan perturbados por maqui-
naria movedora de tierra que se hace impossible reconocer el
suelo original. El perfil del suelo original ha sido cambiado
por cortes, rellenos, y nivelaci6n. El decline original variaba
desde 12 hasta 60 porciento.
El material del suelo al present es rojo, de buen desague,
moderadamente permeable, granular, muy fuertemente ici-
do, de arcillas no expansivas. Es poco profundo, a la roca
serpentinita semi-concolidada subyacente;
Sitios para enclavar residencias y para establecer carre-
teras han sido provistos por operaciones de corte y relleno,
que son muy costosas. (Unidad de capacidad VIIs-2; no esta
en un grupo de bosques)

Tierra Nivelada, Inundable con Frecuencia
Tierra nivelada, inundable con frecuencia (Lf) esti en los
llanos inundables a lo largo de los rios. Consiste de material
que ha sido tan perturbado por maquinaria movedora de
tierra, al extreme que no es possible reconocer el suelo origi-
nal.







SOIL SURVEY


Included in mapping were spots of Lares clay, 2 to 5 per-
cent slopes.
The limitations to the use of this soil for clean cultivation
are severe. This soil has been used for sugarcane for a long
time, but small areas are now in native pasture or low brush
and some areas are in subsistence crops. The soil is some-
what difficult to work. Slope, past erosion, and hazard of
further erosion are limitations. Crops respond well to heavy
applications of lime and fertilizer. (Capability unit IIIe-1;
not in a woodland group)



Levelled Clayey Land
Levelled clayey land (Lc) is in areas that have been so
disturbed by earthmoving equipment that it is not possible
to recognize the original soil. The profile of the original soil
has been changed by cutting, filling, and leveling. The origi-
nal slope ranged from 4 to 40 percent.
The present soil material consists mainly of well-drained,
strongly acid, moderately permeable, slightly sticky and
plastic clay. The underlying material is highly weathered
and is easily worked with earthmoving equipment. The
depth to hard rock is more than 6 feet.
In most places the sites provided by cut and fill operations
are used for residences and light industry. Special care
should be taken on sites used for residences because the soil
material has poor compactibility. (Capability unit VIIIs-2;
not in a woodland group)


Levelled Clayey Land, Shallow
Levelled clayey land, shallow (Le) is made up of materi-
als that have been so reworked by earthmoving equipment
that it is not possible to recognize the original soil. The pro-
file of the original soil has been changed by cutting, filling,
and leveling. The original slope ranged from 12 to 60 per-
cent.
The present soil material consists of red, well-drained,
moderately permeable, granular, very strongly acid, nonex-
panding clay. It is shallow to underlying, semiconsolidated
serpentinite rock.
Building sites for residences and trafficways have been
provided by cut and fill operations, which are costly. (Capa-
bility unit VIIIs-2; not in a woodland group)


Levelled Land, Frequently Flooded
Levelled land, frequently flooded (Lf) is on flood plains
along rivers. It consists of materials that have been so dis-
turbed by earthmoving equipment that the original soil can-
not be recognized.


Se incluyen areas pequefias de Lares arcilloso, 2 a 5 por-
ciento de declive.
Las limitaciones de este suelo para cosechas de cultivo
limpio son several. El suelo ha sido usado para la siembra
de cafia de azucar por un largo tiempo, pero areas pequeiias
estin ahora en pastos nativos y en brefiales bajos y algunas
areas estan en cosechas para el uso de la finca. Este suelo es
de laboreo un tanto dificil. El declive, la erosi6n pasada, y el
peligro de erosi6n en el future son limitaciones. Las cose-
chas responded bien a aplicaciones fuerte de cal y de abo-
nos. (Unidad de capacidad IIIe-1; no esti en un grupo de
bosques)

Tierra Nivelada Arcillosa
Tierra nivelada arcillosa (Lc) esti en areas que ban sido
tan perturbadas por maquinarias movedoras de tierra que es
impossible reconocer el suelo original. El perfil del suelo
original ha sido muy cambiado por cortes, rellenos, y nivela-
ci6n. Las pendientes originales fluctuaban envre 4 y 40 por-
ciento.
El material del suelo existente es mayormente de buen
desague, fuertemente Acido, moderadamente permeable,
levemente pegajoso y plistico, de textura arcillosa. El mate-
rial subyacente esta altamente meteorizadlo y es de ficil
laboreo por la maquinaria movedora de vierra. La profundi-
dad a la roca dura es de mis de 6 pies.
En la mayoria de los sitios donde se han efectuado opera-
ciones de corte y relleno estos sitios se usan para residen-
cias y para industries livianas. Se require un cuidado espe-
cial en sitios que van a ser usados para residencias porque el
material del suelo tiene una compactaci6n muy pobre. (Uni-
dad de capacidad VIIIs-2; no esti en un grupo de bosques)

Tierra Nivelada Arcillosa, Poco Profunda
Tierra nivelada arcillosa, poco profunda (Le), se com-
pone de materials que han sido tan perturbados por maqui-
naria movedora de tierra que se hace impossible reconocer el
suelo original. El perfil del suelo original ha sido cambiado
por cortes, rellenos, y nivelaci6n. El decline original variaba
desde 12 hasta 60 porciento.
El material del suelo al present es rojo, de buen desague,
moderadamente permeable, granular, muy fuertemente ici-
do, de arcillas no expansivas. Es poco profundo, a la roca
serpentinita semi-concolidada subyacente;
Sitios para enclavar residencias y para establecer carre-
teras han sido provistos por operaciones de corte y relleno,
que son muy costosas. (Unidad de capacidad VIIs-2; no esta
en un grupo de bosques)

Tierra Nivelada, Inundable con Frecuencia
Tierra nivelada, inundable con frecuencia (Lf) esti en los
llanos inundables a lo largo de los rios. Consiste de material
que ha sido tan perturbado por maquinaria movedora de
tierra, al extreme que no es possible reconocer el suelo origi-
nal.







MAYAGUEZ AREA OF WESTERN PUERTO RICO


The present soil materials consist of alluvial sediments
that are mainly clay, silty clay loam, and silt loam. These
sediments are generally more than 4 feet deep. The soil
material is neutral to slightly acid, somewhat poorly drained
to moderately well drained, and moderately permeable.
Because of the proximity to the river, flooding is a hazard
during heavy rainstorms.
In many places, sites have been provided for residences,
light industry, commercial buildings, and trafficways by fill
operations, which are costly. (Capability unit VIIIs-2; not in
a woodland group)


Levelled Sandy Land
Levelled sandy land (Lm) is in areas where the soil mate-
rial has been so disturbed by earthmoving equipment that it
is not possible to recognize the original soil. These areas are
close to the beach. The original slope was not more than 5
percent.
The present soil material consists of moderately alkaline
and calcareous sand and loamy sand and is generally more
than 5 feet deep. There are small low areas dissected by
drainageways where the water table is 20 to 30 inches from
the surface.

In most places these leveled sandy areas have been used
as sites for houses, light industry, commercial buildings,
trafficways, and intensive play areas. This has been done at
relatively low cost, but in places the sandy material used as
fill has been dredged from the bottom of the sea at high cost.
(Capability unit VIIIs-2; not in a woodland group)

Limestone Outcrop
Limestone outcrop (Lo) is in areas where hard, massive,
gray and pinkish-gray limestone crops out on 75 to 100 per-
cent of the surface. In areas not entirely covered by lime-
stone, there are irregularly shaped patches of gravelly soil
material that has varying colors and is 2 to 5 inches thick.
Loose fragments of limestone of varying sizes and shapes
are common. The slope ranges from 0 to 60 percent. Includ-
ed in mapping were small depressions in which there is soil
material of variable texture, color, and thickness.
The use of this land type is restricted to wildlife habitat or
water supply. The limitations to the use of this land type for
other purposes are very severe. In most areas the vegetation
consists of brushy forest or brushy pasture that has little
agricultural value, but in the semiarid areas it is chiefly cac-
tus and low brush. (Capability unit VIIIs-2; not in a wood-
land group)

Limestone Rock Land
Limestone rock land (Lr) is in areas where 25 to 75 per-
cent of the surface is covered with hard, massive, gray and
pinkish-gray limestone. Areas not covered by limestone
range from large patches to 1 acre in size. The soil material
has varying textures, colors, consistence, and thickness,
and loose fragments of varying sizes and shapes are com-
mon. The slope ranges from 0 to 60 percent. Included in
mapping were small areas of Aceitunas clay.


El material del suelo al present consiste de sedimentos
aluviales que son mayormente de textura arcillosa, limo-ar-
cillosa 16mica, y limosa-16mica Estos sedimentos por lo
general tienen mis de 4 pies de profundidad. El material de
,suelo es de neutral a levemente acido, de desague un tanto
pobre a moderadamente bien desaguado, y moderadamente
permeable. Su proximidad a los rios present un riesgo,
pues pueden sufrir inundaciones durantes aguaceros fuerte.
Se han desarrollado solares tanto para fines residenciales
como para fines industriales y comerciales y se han trazado
carreteras mediante operaciones costosas de relleno en es-
tos suelos. (Unidad de capacidad VIIIs-2; no esta en un gru-
po de bosques)

Tierra Nivelada Arenosa
Tierra nivelada arenosa (Lm) esti en areas donde el mate-
rial del suelo ha sido tan perturbado por maquinaria move-
dora de tierra que no es possible reconocer el suelo original.
Estas areas estin cercanas a las playas. El declive original
no excedia al 5 porciento.
El material de suelo actual es moderadamente alcalino y
calcareo, de textura arenosa y 16mico arenosa, y por lo gen-
eral tiene una profundidad de mis de 5 pies. Algunas areas
pequefias que estin afectadas por los cursos de desague,
tiene el nivel freitico a una profundidad entire 20 y 30 pulga-
das de la superficie.
Por lo regular estas areas arenosas se han desarrollado
para solares residenciales, industriales y comerciales, y han
servido para el trazado de carreteras y areas recreativas,
mediante operaciones a bajo costo. Algunas areas represen-
tan dep6sitos de arenas que han sido rellenados mediante
dragado de los fondos marines, a un costo alto. (Unidad de
capacidad VIIIs-2; no esta en un grupo de bosques)

Afloraciones Calizas
Afloraciones calizas (Lo) esti en areas donde la roca cali-
za dura, masiva, de color gris y gris rosado aflora en un 75 a
100 porciento de la superficie. Las areas donde la caliza no
es aflorante son pedazos irregulares de tierra cascajosa, de
colors variados y de 2 a 5 pulgadas de profundidad. Son
comunes los fragments calizos sueltos, de variadas formas
y tamafios. El declive varia desde O hasta 60 porciento. Se
incluyen depresiones pequefias en las cuales el material del
suelo es de textura. color, y profundidad variables.
El uso de este tipo de tierra esta restrict a habitat de vida
silvestre o a la provision de agua. Las limitaciones en el uso
de este tipo tierra para otros prop6sitos son muy several.
En la mayor parte de las areas la vegetaci6n consiste de
bosques enmalezados y pastos enmalezados que tienen muy
poco valor agricola, pero en las areas semi-aridas la vegeta-
ci6n es mayormente de cactus y de brefiales bajos. (Unidad
de capacidad VIIIs-2; no esti en un grupo de bosques)
Tierra Roca Caliza
Tierra roca caliza (Lr) esta en areas donde el 25 al 75 por-
ciento de la superficie esta cubierta por roca caliza dura,
macisa, de color gris y gris rosado. Las areas que no estin
cubiertas por roca caliza varian en tamaiio desde pedazos
grandes hasta un acre. El material del suelo tiene textura,
colors, consistencia y profundidad muy variables. Frag-
mentos sueltos de roca son comunes y varian en tamafio y
en forma. El declive varia desde 0 hasta 60 porciento. Se
incluyen areas pequefias de Aceitunas arcilloso.







MAYAGUEZ AREA OF WESTERN PUERTO RICO


The present soil materials consist of alluvial sediments
that are mainly clay, silty clay loam, and silt loam. These
sediments are generally more than 4 feet deep. The soil
material is neutral to slightly acid, somewhat poorly drained
to moderately well drained, and moderately permeable.
Because of the proximity to the river, flooding is a hazard
during heavy rainstorms.
In many places, sites have been provided for residences,
light industry, commercial buildings, and trafficways by fill
operations, which are costly. (Capability unit VIIIs-2; not in
a woodland group)


Levelled Sandy Land
Levelled sandy land (Lm) is in areas where the soil mate-
rial has been so disturbed by earthmoving equipment that it
is not possible to recognize the original soil. These areas are
close to the beach. The original slope was not more than 5
percent.
The present soil material consists of moderately alkaline
and calcareous sand and loamy sand and is generally more
than 5 feet deep. There are small low areas dissected by
drainageways where the water table is 20 to 30 inches from
the surface.

In most places these leveled sandy areas have been used
as sites for houses, light industry, commercial buildings,
trafficways, and intensive play areas. This has been done at
relatively low cost, but in places the sandy material used as
fill has been dredged from the bottom of the sea at high cost.
(Capability unit VIIIs-2; not in a woodland group)

Limestone Outcrop
Limestone outcrop (Lo) is in areas where hard, massive,
gray and pinkish-gray limestone crops out on 75 to 100 per-
cent of the surface. In areas not entirely covered by lime-
stone, there are irregularly shaped patches of gravelly soil
material that has varying colors and is 2 to 5 inches thick.
Loose fragments of limestone of varying sizes and shapes
are common. The slope ranges from 0 to 60 percent. Includ-
ed in mapping were small depressions in which there is soil
material of variable texture, color, and thickness.
The use of this land type is restricted to wildlife habitat or
water supply. The limitations to the use of this land type for
other purposes are very severe. In most areas the vegetation
consists of brushy forest or brushy pasture that has little
agricultural value, but in the semiarid areas it is chiefly cac-
tus and low brush. (Capability unit VIIIs-2; not in a wood-
land group)

Limestone Rock Land
Limestone rock land (Lr) is in areas where 25 to 75 per-
cent of the surface is covered with hard, massive, gray and
pinkish-gray limestone. Areas not covered by limestone
range from large patches to 1 acre in size. The soil material
has varying textures, colors, consistence, and thickness,
and loose fragments of varying sizes and shapes are com-
mon. The slope ranges from 0 to 60 percent. Included in
mapping were small areas of Aceitunas clay.


El material del suelo al present consiste de sedimentos
aluviales que son mayormente de textura arcillosa, limo-ar-
cillosa 16mica, y limosa-16mica Estos sedimentos por lo
general tienen mis de 4 pies de profundidad. El material de
,suelo es de neutral a levemente acido, de desague un tanto
pobre a moderadamente bien desaguado, y moderadamente
permeable. Su proximidad a los rios present un riesgo,
pues pueden sufrir inundaciones durantes aguaceros fuerte.
Se han desarrollado solares tanto para fines residenciales
como para fines industriales y comerciales y se han trazado
carreteras mediante operaciones costosas de relleno en es-
tos suelos. (Unidad de capacidad VIIIs-2; no esta en un gru-
po de bosques)

Tierra Nivelada Arenosa
Tierra nivelada arenosa (Lm) esti en areas donde el mate-
rial del suelo ha sido tan perturbado por maquinaria move-
dora de tierra que no es possible reconocer el suelo original.
Estas areas estin cercanas a las playas. El declive original
no excedia al 5 porciento.
El material de suelo actual es moderadamente alcalino y
calcareo, de textura arenosa y 16mico arenosa, y por lo gen-
eral tiene una profundidad de mis de 5 pies. Algunas areas
pequefias que estin afectadas por los cursos de desague,
tiene el nivel freitico a una profundidad entire 20 y 30 pulga-
das de la superficie.
Por lo regular estas areas arenosas se han desarrollado
para solares residenciales, industriales y comerciales, y han
servido para el trazado de carreteras y areas recreativas,
mediante operaciones a bajo costo. Algunas areas represen-
tan dep6sitos de arenas que han sido rellenados mediante
dragado de los fondos marines, a un costo alto. (Unidad de
capacidad VIIIs-2; no esta en un grupo de bosques)

Afloraciones Calizas
Afloraciones calizas (Lo) esti en areas donde la roca cali-
za dura, masiva, de color gris y gris rosado aflora en un 75 a
100 porciento de la superficie. Las areas donde la caliza no
es aflorante son pedazos irregulares de tierra cascajosa, de
colors variados y de 2 a 5 pulgadas de profundidad. Son
comunes los fragments calizos sueltos, de variadas formas
y tamafios. El declive varia desde O hasta 60 porciento. Se
incluyen depresiones pequefias en las cuales el material del
suelo es de textura. color, y profundidad variables.
El uso de este tipo de tierra esta restrict a habitat de vida
silvestre o a la provision de agua. Las limitaciones en el uso
de este tipo tierra para otros prop6sitos son muy several.
En la mayor parte de las areas la vegetaci6n consiste de
bosques enmalezados y pastos enmalezados que tienen muy
poco valor agricola, pero en las areas semi-aridas la vegeta-
ci6n es mayormente de cactus y de brefiales bajos. (Unidad
de capacidad VIIIs-2; no esti en un grupo de bosques)
Tierra Roca Caliza
Tierra roca caliza (Lr) esta en areas donde el 25 al 75 por-
ciento de la superficie esta cubierta por roca caliza dura,
macisa, de color gris y gris rosado. Las areas que no estin
cubiertas por roca caliza varian en tamaiio desde pedazos
grandes hasta un acre. El material del suelo tiene textura,
colors, consistencia y profundidad muy variables. Frag-
mentos sueltos de roca son comunes y varian en tamafio y
en forma. El declive varia desde 0 hasta 60 porciento. Se
incluyen areas pequefias de Aceitunas arcilloso.







SOIL SURVEY


This land type is not suitable for cultivation. Its use is re-
stricted to light grazing, woodland, and wildlife habitat.
Most of the acreage is in native pasture and brush. Some
areas on the lower slopes are planted occasionally to sub-
sistence crops and cultivated by hand. The limitations to the
use of this land type for cultivation are very severe. Im-
provement of pasture by such practices as fertilizing, seed-
ing, and controlling water is not practical. (Not in a capabi-
lity unit or woodland group)

Los Guineos Series
The Los Guineos series consists of deep, moderately well
drained soils that are extremely acid and very strongly acid
and moderately permeable. These soils formed in residual
material weathered from volcanic rock. The slope ranges
from 20 to 60 percent. The climate is humid. Rainfall
amounts to 90 to 110 inches, and the annual temperature
ranges from 72 to 77 F.

In a representative profile the surface layer is brown, ex-
tremely acid clay that has common, fine, yellowish-brown
mottles and is about 5 inches thick. The subsoil, to a depth
of about 48 inches, is yellowish-brown, reddish-yellow, red,
and strong-brown, extremely acid, friable and firm, slightly
sticky and plastic clay. The substratum, to a depth of more
than 5 feet, consists of friable, slightly sticky and plastic,
weathered rock variegated with red, brownish yellow, very
pale brown, and very dark brown.


A large acreage is in brushy forest and abandoned coffee,
but some areas are in coffee and in subsistence crops.

Representative profile of Los Guineos clay, 20 to 60 per-
cent slopes, eroded, 0.5 kilometer on dirt road from marker
28.9 on Highway No. 105, 100 meters south of dirt road.

Ap-0 to 5 inches, brown (10YR 4/3) clay; common, fine, distinct mot-
tles of yellowish brown (10YR 5/8); weak, fine, granular
structure; friable, slightly sticky and slightly plastic; few fine
roots; extremely acid; clear, smooth boundary.
B21t-5 to 15 inches, yellowish-brown (10YR 5/6) clay; few fine mot-
tles of yellowish red (5YR 5/8); moderate, coarse, subangular
blocky structure; friable, slightly sticky and slightly plastic;
few fine roots; numerous worm casts; common fine roots;
extremely acid; gradual, smooth boundary.
B22t-15 to 24 inches, reddish-yellow (7.5YR 6/8) clay; ped interiors
have common, medium, distinct mottles of red (2.5YR 4/6);
moderate coarse, subangular blocky structure; firm, slightly
sticky and plastic; thin continuous clay films on ped surfaces
and patchy films in root channels; very strongly acid; gradual
wavy boundary.
B31-24 to 34 inches, red (2.5YR 4/6) and strong-brown (7.5YR 5/8)
clay; weak, fine and medium, subangular blocky structure;
very firm, slightly sticky and plastic; very strongly acid; few
fine roots; patchy clay films on vertical cleavage planes and in
root channels; 20 percent of the material is saprolite; gradual
wavy boundary.

B32-34 to 48 inches, red (2.5YR 4/6) and reddish-yellow (7.5YR 6/6)
clay; weak, fine and medium, subangular blocky structure;
few firm, slightly sticky and plastic; patchy clay films on ver-
tical ped surfaces and in root channels; extremely acid; 40
percent of the material is saprolite; gradual, wavy boundary.


Este tipo tierra no se presta para cosechas de cultivo lim-
pio. Su uso esti restrict a pastoreo, bosques, y habitat de
vida silvestre. La mayor parte del cuerdaje esti en pastes
natives y en brefiales. Algunas areas en los declives mis Ile-
vaderos se siembran ocasionalmente de cosechas par el uso
de la finca, y su cultivo es a mano. Las limitaciones para el
uso de este tipo tierra para cultivo son muy several. El me-
joramiento de pastes por prActicas tales como abonamiento,
siembra y el control del agua no es prfctico. (No estf en una
unidad de capacidad o en un grupo de bosques)

Serie Los Guineos
La series Los Guineos consiste de suelos profundos, de
desagiie moderadamente bueno, que son extremadamente
acidos, y muy fuertemente Acidos, y moderadamente per-
meables. Estos suelos se han formado en material residual
meteorizado de rocas volcfnicas. El declive varia desde 20
hasta 60 porciento. El clima es h6medo. La lluvia es de 90
hasta 110 pulgadas, y la temperature annual varia desde 72*
hasta 77 F.
En un perfil representative la capa superficial es color
pardo, extremadamente Acida, de textura arcillosa, tiene
manchas comunes finas, color pardo amarillosas, y que
tiene un espesor de alrededor de 5 pulgadas. El subsuelo,
hasta una profundidad de 48 pulgadas, es pardo amarilloso,
amarillo rojizo, rojo y pardo fuerte, extremadamente acido,
friable, y firme, levemente pegajoso y plastic, de textura
arcillosa. El substrate, hasta una profundidad de mis de 5
pies, consiste de roca volcanica muy meteorizada, friable,
levemente pegajoso y plastico veteado con rojo, amarillo
pardo, pardo muy palido, y pardo muy oscuro.
Una Area considerable estA en bosques enmalezados y en
caf6 abandonado, pero algunas Areas estAn en cafe y en co-
sechas para el uso de la finca.
Perfil representative de Los Guineos arcilloso, 20 a 60
porciento de declive, erodado, 0.5 kil6metros en camino de
tierra desde el marcador de kil6metros 28.9 en la carretera
no. 105, 100 metros al sur del camino de tierra.
Ap-0 a 5 pulgadas, pardo (10YR 4/3) arcilloso, con manchas co-
munes, finas y precisas de color pardo amarilloso (10YR 5/8);
estructura granular d6bil fina; consistencia friable, levemente
pegajosa, levemente plistica algunas raicillas; extremada-
mente acido; limited claro liso.
B21t-5 a 15 pulgadas, pardo-amarillento (10YR 5/6) arcilloso, con
algunas manchas finas color rojo-amarillentas (SYR 5/8); es-
tructura bloque subangular, moderada, gruesa; consistencia
friable, levemente pegajosa, levemente plistico; algunas rai-
cillas; abundantes desperdicios de gusanos, raicillas co-
munes; extremadamente acido; limited gradual liso.
B22t-15 a 24 pulgadas, amarillo-rojizo (7.5YR 6/8) arcilloso; manchas
medianas, precisas, rojas (2.5YR 4/6) son comunes en el inte-
rior de los peds; estructura bloque subangular, moderada
gruesa; consistencia firme, levemente pegajosa, plistica; pe-
liculas delgadas y continues en la superficie de los peds y re-
cubriendo las cavidades de raices; bien fuertemente Acido:
limited gradual ondulante.
B31-24 a 34 pulgadas, rojo (2.5YR 4/6) y pardo fuerte (7.5YR 5/8)
arcilloso; estructura bloque subangular d6bil, entire fina y
median; consistencia muy fiume, levemente pegajosa. plisti-
ca; bien fue'temente icido; alguna raicillas; peliculas de arcil-
la descontinuas, recubriendo los pianos de rotura vertical de
los peds y las cavidades de las races; 20 porciento por volu-
men de este horizonte consiste de saprolito; limited gradual
ondulante.
B32-34 a 48 pulgadas, rojo (2.5YR 4/6) y amarillo rojizo (7.5YR 6/6)
arcilloso; estructura bloque subangular debil fina y median;
consistencia firme, levemente pegajosa, plastica; peliculas de
arcilla descontinuas recubriendo los pianos de rotura vertical
de los peds y las cavidades de raices; extremadamente acido;
40 porciento por volume del horizonte consiste de saproli-
to; limited gradual ondulante.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


C-48 to 60 inches +, clay (saprolite) that is mixed red (2.5YR 4/6),
brownish yellow (10YR 6/6), very pale brown (10YR 7/4), and
very dark brown (10YR 2/2); massive; friable, slightly sticky
and plastic; very strongly acid; structure of parent rock pre-
dominates.
The annual soil temperature ranges from 600 to 720 F., and the dif-
ference between the average summer temperature and average winter
temperature is less than 90. The solum ranges from 36 to 58 inches in
thickness. Reaction ranges from strongly acid to extremely acid. The
A horizon has a hue of 7.5YR and 10YR, a value of 4 and 5, and a chro-
ma of 3 and 5. The B2 horizon has structure that ranges from medium
to coarse in class and from moderate to strong in grade. Saprolite
makes up 20 to 60 percent of the B3 horizon.

Los Guineos clay, 12 to 20 percent slopes, eroded(LuD2).
-This soil is on foot slopes and broad hilltops in the cooler,
windier, and more humid areas of the volcanic uplands. It
has a profile similar to the one described as representative
of the series, but the surface layer is thicker. This soil has
been less affected by erosion than Los Guineos clay, 20 to
60 percent slopes, eroded. Runoff is medium, and erosion is
a severe hazard. The available water capacity is high, and
fertility is somewhat low.


Included in mapping were spots of Los Guineos clay, 20
to 40 percent slopes.
This soil can be used for occasional but not regular culti-
vation. Most of the acreage is in low brush and native pas-
ture that has low carrying capacity. A few areas are used for
but are poorly suited to coffee. Some areas are used for sub-
sistence crops. This soil is not easily worked. The choice of
plants is restricted, and careful management is needed in
clean-cultivated areas. Slope, runoff, past erosion, and haz-
ard of further erosion are limitations. The time of planting,
tillage, and harvesting is restricted because of the high rain-
fall. (Capability unit IVe-1; woodland groups lo3, lo4)


Los Guineos clay, 20 to 60 percent slopes, eroded (LuF2).
-This soil is on strongly dissected side slopes and hilltops,
generally in the cooler, more humid, and windier areas of
the volcanic uplands. These areas are at high altitudes and
have high rainfall. This soil has the profile described as rep-
resentative of the series. Runoff is rapid, and erosion is a
hazard.

Included in mapping were areas of Maricao clay and small
spots of Cuchillas silty clay loam. These areas make 10 per-
cent or less of the acreage.
This soil is not suitable for clean cultivation. Its use is re-
stricted mainly to pasture, woodland, and wildlife habitat.
Most of the acreage is now in abandoned coffee and brush.
Some areas are in native pasture that has low carrying ca-
pacity, and a few areas have been planted to subsistence
crops. Slope, runoff, past erosion,and hazard of further
erosion are severe limitations that cannot be corrected.
(Capability unit VIe-l; woodland groups 1o3, lo4)


C-48 a 60 pulgadas +, colors de saprolito son mezclados entire rojo
(2.5YR4/6), amarillo pardo (10YR 6/6), pardo bien tenue
(10YR 7/4), y pardo bien oscuro (10YR 2/2); arcilloso; estruc-
tura macisa; consistencia friable, levemente pegajosa; plisti-
ca; bien fuertemente icido; predomina la estructura de la
roca originaria.
La temperature annual del suelo varia entire 600 y 720 F, y la diferen-
cia entire la temperature promedio de verano y la temperature prome-
dio de invierno es menor de 9. El solum varia desde 36 hasta 58 pulga-
das en espesor. La reacci6n varia desde fuertemente acida hasta extre-
madamente acida. El horizonte A tiene matices de 7.5YR y 10YR, va-
lores de 4 y 5, y cromas de 3 hasta 5. El horizonte B2 tiene estructura
que varia desde median hasta gruesa en clase y desde moderada hasta
fuerte en grado. El saprolito en el horizonte B3 varia desde 20 hasta
60 porciento.
Los Guineos arcilloso, 12 a 20 porciento de declive, erodado
(LuD2). -Este suelo esta en las faldas y en las cumbres
amplias de las alturas volcinicas, donde 6stas son mis
htimedas,mis frias y mas afectadas por el viento. Tiene un
perfil similar al descrito como representative de la series,
pero la capa superficial es mas gruesa. El suelo ha sido
menos afectado por la erosi6n que Los Guineos arcilloso, 20
a 60 porciento de declive, erodado. El escurrimiento es
median, y la erosi6n es u pelgro severe. La capacidad de
retenci6n de humedad es alta, y la fertilidad es un tanto
pobre.
Se incluyen areas de Los Guineos arcilloso, 20 a 40 por-
ciento de declive.
Este suelo se puede usar ocasionalmente, pero no regular-
mente, para cosechas de cultivo limpio. La mayor parte del
cuerdaje esti en brefiales bajos y en pastes natives que ti-
enen una productividad baja. Algunas areas pequeiias se
usan, pero no se prestan, para cafe. Algunas areas, tambi6n
se usan para cosechas para el uso de la finca. Este suelo no
es de ficil laboreo. La selecci6n de plants esti restrict y
se require un manejo cuidadoso si se usa para cosechas de
cultivo limpio. El declive, el escurrimiento, la erosi6n pasa-
da, y el peligro de erosi6n en el future son limitaciones. La
epoca de siembra, de cultivo y de recolecci6n estin limita-
das debido a la alta precipitaci6n. (Unidad de capacidad
IVe-1; grupos de bosques lo3, lo4)
Los Guineos arcilloso, 20 a 60 porciento de declive, eroda-
do(LuF2).-Este suelo esti en laderas y en cumbres fuerte-
mente bisectadas, por lo general, en las alturas volcinicas
que son mis frias, mis humedas y mis afectadas por el
viento. Estas areas estan a mayor elevaci6n y tienen una
precipitaci6n alta. Este suelo tiene el perfil descrito como
representative para la series. El escurrimiento es ripido y la
erosion es un peligro.
Se incluyen areas de Maricao arcilloso, y areas pequefias
de Cuchillas limo arcilloso 16mico. Estas areas alcanzan al
10 porciento o menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esti restrict mayormente a pastes, bosques y habi-
tat de vida silvestre. La mayor parte del cuerdaje esta ahora
en caf6 abandonado y en brefiales. Algunas areas estan en
pastes natives de baja productividad, y areas pequefias se
han sembrado de cosechas para el uso de la finca. El de-
clive, el escurrimiento, la erosi6n pasada y el peligro de ero-
si6n en el future son limitaciones several que no pueden ser
corregidas. (Unidad de capacidad VIe-1; grupos de bosque
lo3, lo4)







SOIL SURVEY


Mabi Series
The Mabi series consists of deep, somewhat poorly
drained soils that are slowly permeable. These soils are on
stream terraces, long foot slopes, and alluvial fans. They
formed in sediments washed from the adjacent volcanic
hills. The slope ranges from 2 to 12 percent. The climate is
humid. Rainfall amounts to 70 to 80 inches, and the annual
temperature ranges from 770 to 790 F.

In a representative profile the surface layer is dark-
brown, medium acid clay that has common, fine, yellow
mottles and is about 9 inches thick. The next layer is dark-
brown, medium acid, very firm, sticky and plastic clay that
has common fine mottles of reddish brown and a few fine
mottles of yellowish brown. This layer is about 7 inches
thick. The upper part of the substratum consists of dark yel-
lowish-brown, medium acid, firm, sticky and plastic clay
that has common fine mottles of strong brown and a few fine
mottles of greenish gray. The lower part, to a depth of more
than 60 inches, is yellowish-brown, moderately alkaline,
firm, sticky and plastic clay that has many fine mottles of
yellowish brown and a few fine mottles of light greenish
gray.



Most of the acreage is in sugarcane and pasture.

Representative profile of Mabi clay, 2 to 5 percent slopes,
40 meters north of marker 211.9 on Highway No. 2.

Ap-0 to 9 inches, dark-brown (10YR 3/3) clay; common, fine, distinct
mottles of yellow (2.5YR 7/6), weak, coarse, subangular
blocky structure; very firm, sticky and plastic; many fine
roots; many fine pores; few fine angular pebbles; medium
acid; gradual, smooth boundary.
AC-9 to 16 inches, dark-brown (10YR 4/3) clay; common, fine, dis-
tinct mottles of reddish brown (5YR 4/4) and few, fine, faint
mottles of yellowish brown (10YR 5/6); medium and coarse,
irregular-shaped peds that have pressure faces and slicken-
sides; very firm, sticky and plastic; few fine pores; common
fine roots; many, fine, black concretions; medium acid; grad-
ual, smooth boundary.
Cl-16 to 24 inches, dark yellowish-brown (10YR 4/4) clay; common,
fine, distinct mottles of strong brown (7.5YR 5/6) and few,
fine, prominent mottles of light greenish gray (5GY 7/1); me-
dium irregular-shaped peds that have common pressure faces
and slickensides; firm, sticky and plastic; few fine roots;
many, fine, black concretions; medium acid; gradual, smooth
boundary.
C2-24 to 33 inches, dark-brown (10YR 4/3) clay; common, fine, faint
mottles of yellowish brown (10YR 5/6) and few, fine, promi-
nent mottles of light greenish gray (5GY 7/1); medium irregu-
lar-shaped peds that have a few pressure faces and slicken-
sides; firm, sticky and plastic; few fine roots; common, fine,
black concretions; slightly acid; gradual, smooth boundary.

C3 -33 to 45 inches, dark-brown (10YR 4/3) clay; medium irregular
shaped peds that have a few pressure faces and slickensides;
firm, sticky and plastic; few fine roots; many, fine, black
concretions; mildly alkaline; gradual, smooth boundary.


Serie Mabi
La series Mabi consiste de suelos profundos, de desagiie
un tanto pobre, y que son lentamente permeables. Estos
suelos estAn en las terrazas de los rios, en faldas, y en aban-
icos de aluvi6n. Se han formado en sedimentos lavados
desde los montes volcinicos adyacentes. El declive varia
desde 2 hasta 12 porciento. el clima es himedo. La lluvia es
de 70 hasta 80 pulgadas, y la temperature annual varia desde
77 hasta 790 F.
En un perfil represenvativo la capa superficial es pardo
oscura, medianamente icida, de textura arcillosa, que tiene
manchas comunes y finas de color amarillo y que tiene un
espesor de alrededor de 9 pulgadas. La proxima capa es
pardo oscura, medianamente acida, muy firme, pegajosa y
plistica, de textura arcillosa, que tiene manchas comunes y
finas, color pardo rojizo y algunas finas de color pardo
amarilloso. Esta capa es de alrededor de 7 pulgadas de es-
pessor. La parte superior fel substrato es pardo amarillosa
oscura, medianamente Acida, firme, pegajosa y plistica, de
textura arcillosa, que tiene maichas comunes finas color
pardo fuerte, y algunas finas color gris verdoso. La parte
inferior, hasta una profundidad de mis de 5 pies, es pardo
amarilloso, moderadamente alcalina, firme, pegajosa y
plfstica, de textura arcillosa, que tiene muchas manchas
finas de color pardo amarillosa, y algunas manchas finas de
color gris verdoso tenue.
La mayor parte del cuerdaje esti en cafiade azlcar y en
pastos.
Perfil representative de Mabi arcilloso, 2 a 5 porciento de
declive, 40 metros al norte del marcador de kilometros
211.9, en la carretera no. 2.
Ap-0 a 9 pulgadas, pardo oscuro (10YR 3/3) arcilloso; con manchas
comunes y finas, precisas, color amarillas (2.5Y 7/6); estruc-
tura bloque subangular, d6bil gruesa; consistencia bien
firme, pegajosa y plAstica; raicillas abundantes; poros finos,
abundantes; presencia de alguna grava final, angular; medi-
anamente Acido; limited gradual liso.
AC-9 a 16 pulgads, pardo oscuro (10YR 4/5) arcilloso; con manchas
comunes, finas, precisas, pardo-rojizas y algunas otras man-
chas finas tenues, pardo-amarillentas (10YR 5/6); peds de
tamafio medianos y gruesos, de forma irregular y con pianos
de presi6n y de resbalamiento; consistencia bien firme, pega-
josa, plastica; algunos poros finos; raicillas comunes; abun-
dancia de concreciones finas color negro: medianamente aci-
do; colindancia gradual lisa.
C1-16 a 24 pulgadas, pardo amarillento oscuro (10YR 4/4) arcilloso;
con manchas comunes y finau, precisas pardo fuerte (7.5YR
5/6) y algunas otras manchas finas, conspicuas, gris verdosas
claras (5GY 7/1); peds medianos, irregulares con pianos de
presi6n y pianos de resbalamiento; consistencia firme, pega-
josa y plastica; algunas raicillas; abundantes concreciones
finas, color negro; medianamente acido: limited gradual liso.
C2-24 at 33 pulgadas, pardo oscuro (10YR 4/3) arcilloso, con man-
chas comunes, finas, tenues, pardo amarillentas (10YR 5/6), y
algunas otras manchas finas, conspicuas, gris verdosas claras
(GY 7/1); peds medianos, de forma irregular con algunos
pianos de presi6n y pianos de resbalamiento; consistencia
firme, pegajosa, plAstica: algunas raicillas; abundante con-
creclones finas, color negras; ligeramente Acido; limited grad-
ual liso.
C3-33 a 45 pulgadas, pardo oscuro (10YR 4/3) arcilloso; peds medi-
anos de forma irregular, con pianos de presi6n y pianos de
resbalamiento; consistencia firme, pegajosa y plastic; algun-
as raicillas; abundantes concreciones, finas, color negras;
suavemente alcalino; limited gradual liso.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


C4-45 to 60 inches +, yellowish-brown (10YR 5/6) clay; many, weak,
fine, dark yellowish-brown (10YR 4/4) mottles and few, fine,
prominent, light greenish-gray (5GY 7/1) mottles; medium,
irregular-shaped peds that have a few pressure faces and
slickensides; firm, sticky and plastic; few fine roots; few fine
pores; common, fine, black concretions; moderately alkaline.

The depth to prominent gray and greenish-gray mottles ranges from
6 to 18 inches. In most places there is mixing of the horizons caused by
the churning action as the clay shrinks and swells. Slickensides range
from 1/2 to 8 inches in length. Black concretions range from few to
many throughout the profile. Reaction ranges from slightly acid to
medium acid in the A and AC horizons and from neutral to moderately
alkaline in the C horizon. The combined thickness of the A and AC
horizon ranges from 12 to 22 inches. The A horizon has a hue of 10YR,
a value of 3 and 4, and a chroma of 2 and 3. The C horizon has a hue of
10YR, a value of 4 and 5, and a chroma of 2 or more.

Mabi clay, 2 to 5 percent slopes (MaB).-This soil is on
alluvial fans, long foot slopes, and stream terraces below
the volcanic uplands. It has the profile described as repre-
sentative of the series. This soil is fertile and has high avail-
able water capacity.
Included in mapping were small areas of Montegrande
clay. These areas make up 5 percent or less of the acreage.

Most of the acreage has been in sugarcane for many
years. A few areas are in pasture or brush. The soil is not
easily worked. The choice of plants is restricted. Moderate
management practices are needed, but careful management
is needed in cultivated areas, because of the somewhat un-
favorable workability and wetness that can be corrected by
drainage. (Capability unit IIw-3; not in a woodland group)

Mabi clay, 5 to 12 percent slopes, eroded (MaC2).-This
soil is on long foot slopes of the volcanic uplands. It has a
profile similar to the one described as representative of the
series, but the surface layer is thinner. This soil has been
more affected by erosion than Mabi clay, 2 to 5 percent
slopes.
Included in mapping were areas of soil that have a darker
colored surface layer and calcareous substratum and small
areas of Montegrande clay. These areas make up 10 percent
or less of the acreage.
This soil is suitable for clean cultivation. A large acreage
has been planted to sugarcane, but other areas are in native
pasture, cutgrass, and subsistence crops. Slope, past ero-
sion, poor workability, and hazard of further erosion are
severe limitations. The amount of clean cultivation, the
choice of crops, and the timing of tilling and planting are
restricted. (Capability unit IIIe-16; not in a woodland group)



Malaya Series
The Malaya series consists of shallow, well-drained soils
that are moderately permeable. The soils formed in residual
material weathered from lime-enriched volcanic rock. The
slope ranges from 20 to 60 percent. The climate is humid.
Rainfall amounts to 70 to 80 inches, and the annual tempera-
ture ranges from 760 to 790 F.


C4-45 a 60 pulgadas +, pardo amarillento (10YR 5/6) arcilloso, con
muchas manchas finas, tenues, pardas-amarillentas oscuras
(10YR 4/4) y algunas otras finas, conspicuas, gris verdosas
claras (5GY 7/1); peds medianos, de forma irregular con pian-
os de presi6n y pianos de resbalamiento; consistencia firme,
pegajosa y plfstica; algunas raicillas; algunas cavidades finas;
concresiones finas, comunes, color negro; moderadamente
alcalino.
La profundidad a las manchas prominentes gris y gris verdosas varia
desde 6 hasta 18 pulgadas. La acci6n de las arcilla al contraerse y ex-
panderse causa que los horizontes se mezclen entire si. Los pianos de
resbalamiento varian desde 1/2 hasta 8 pulgadas en largo. Las concre-
ciones negras varian desde pocas hasta muchas a traves del perfil. La
reacci6n varia desde levemente acida hasta medianamente Acida en los
horizontes A y AC y desde neutral a moderadmente alcalina en el hori-
zonte C. El grosor combinado de los horizontes A y AC varia desde 12
hasta 22 pulgadas. El horizonte A tiene matiz de 10YR, valores de 3 y
4, y cromas de 2 y 3. El horizonte C tiene matiz de 10YR, valores de 4
y 5, y cromas de 2 o mis altas.
Mabi arcilloso, 2 a 5 porciento de declive (MaB).-Este
suelo esti en abanicos de aluvi6n, faldas y terrazas de rios
bajo las alturas volcinicas. Tiene el perfil descrito como
representative de la series. El suelo es fertil y tiene una
capacidad de retenci6n de humedad alta.
Se incluyen areas pequefias de Montegrande arcilloso.
Estas areas alcanzan el 15 porciento o menos del cuerdaje
total.
Una parte considerable del cuerdaje ha estado en cafia de
azucar por muchos afios. Algunas areas estin en pastos o en
brefiales. El suelo es de ficil laboreo. La selecci6n de plan-
tas es restrict. Se requieren pricticas moderadas de mane-
jo. El manejo debe ser cuidadoso cuando se usa para cose-
chas de cultivo limpio, para sobreponerse al laboreo que es
un tanto desfavorable y el encharcamiento que puede corre-
girse por desague. (Unidad de capacidad IIw-3; no esta en
un grupo de bosques)
Mabi arcilloso, 5 a 12 porciento de declive, erodado (Ma-
C2).-Este suelo esta en faldas de las alturas volcinicas.
Tiene un perfil similar al descrito como representative de la
series, pero la capa superficial es mis delgada. Este suelo ha
sido mas afectado por la erosi6n que Mabi arcilloso, 2 a 5
porciento de declive.
Se incluyen areas de un suelo que tiene una capa superfi-
cial mis oscura y un substrato calcireo, y tambi6n areas
pequefias de Montegrande arcilloso. Estas areas alcanzan al
10 porciento o menos del cuerdaje total.
Este suelo se presta para cosechas de cultivo limpio. Un
curdaje considerable se ha sembrado de cafia de az6car,
pero otras areas estin en pastos natives, yerba de corte y
cosechas para el uso de la finca. El declive, la erosi6n pasa-
da, el laboreo dificil, y el peligro de erosi6n en el future son
limitaciones several. La cantidad de cultivo limpio, la selec-
ci6n de plants y el tiempo en que se pueden efectuar opera-
ciones de cultivo y de siembra estan restrictos. (Unidad de
capacidad IIIe-16; no esta en un grupo de bosques)

Serie Malaya
La series Malaya consiste de suelos poco profundos, de
buen desagiie, que son moderadamente permeables. Los
suelos se han formado en material residual meteorizado de
rocas volcinicas enriquecidas con cal. El declive varia
desde 20 hasta 60 porciento. El clima es hfmedo. La lluvia
es de 70 hasta 80 pulgadas, la temperature annual varia desde
760 hasta 790 F.







SOIL SURVEY


In a representative profile the surface layer is dark yel-
lowish-brown, slightly acid clay that contains common fine
and medium rock fragments and is about 6 inches thick. The
subsoil is brown, mildly alkaline, firm, sticky and plastic
gravelly clay about 6 inches thick. Fine and medium rock
fragments make up 25 percent, by volume, of this layer, and
stringers of dark yellowish-brown soil material extend from
the surface layer down into this layer. The substratum is
dark yellowish-brown, moderately alkaline, firm, slightly
sticky and slightly plastic clay loam that is underlain by
semiconsolidated tuffaceous rock at a depth of about 16
inches.


These soils have been mainly in native pasture and brush
because of the slope.
Representative profile of Malaya clay, 20 to 60 percent
slopes, eroded, 3.2 kilometers north of the town of Hormi-
gueros, 46 meters east of kilometer marker 1.2 on Highway
No. 344.
Ap-0 to 6 inches, dark yellowish-brown (10YR 3/4) clay; weak, medi-
um, granular structure; friable, slightly sticky and slightly
plastic; many fine roots; few, fine, black concretions; com-
mon fine and medium rock fragments make up 15 percent, by
volume, of the material; slightly acid; clear, smooth bounda-
ry.
B-6 to 12 inches, brown (10YR 4/3) gravelly clay; stringers of dark
yellowish brown (10YR 3/4); dark grayish brown (10YR 4/2)
crushed; weak, medium, subangular blocky structure; firm,
sticky and plastic; common fine roots; common, fine, black
concretions; many fine and medium rock fragments make up
25 percent, by volume, of material; mildly alkaline; clear,
smooth boundary.
C-12 to 16 inches, dark yellowish-brown (10YR 4/4) clay loam; com-
mon, medium, faint mottles of brown (10YR 5/3); brown
(10YR 4/3) crushed; massive; firm, slightly sticky and slightly
plastic; black coatings on faces; many, medium, partly
weathered rock fragments that can be crushed between fin-
gers; moderately alkaline; gradual, wavy boundary.
R-16 to 20 inches +, semiconsolidated, calcareous, tuffaceous rock.

The solum ranges from 9 to 15 inches in thickness, and the depth to
hard, calcareous, tuffaceous rock ranges from 12 to 20 inches. Fine
and medium volcanic rock fragments make up 15 to 30 percent. by
volume, of each horizon. Reaction ranges from medium to slightly
acid in the A horizon and from neutral to moderately alkaline in the B
and C horizons. The A and B horizons have a hue of 5YR to 10YR and
a value and a chroma of 3 and 4. The B horizon has weak subangular
blocky structure that ranges from fine to medium in class. The C hori-
zon ranges from clay loam to silty clay loam in texture.

Malaya clay, 20 to 60 percent slopes, eroded (McF2).-This
soil is on strongly dissected side slopes and narrow ridge-
tops of volcanic uplands that have been somehow influ-
enced by limestone. Runoff is rapid, and erosion is a hazard.

Included in mapping were areas of Mucara clay, Caguabo
clay loam, Quebrada silty clay, and outcrops of volcanic
rock. These areas make up 15 percent or less of the acreage.


En un perfil representative la capa superficial es pardo
amarillosa oscura, levemente acida, de textura arcillosa,
que contiene fragments de roca comunes, finos y medianos
y que es de alrededor de 6 pulgadas de espesor. El subsuelo
es pardo, suavemente alcalino, firme, pegajoso y plistico,
de textura cascajo arcilloso, y de alrededor de 6 pulgadas de
espesor. Fragmentos de roca finos y medianos alcanzan has-
ta el 25 porciento de volume de esta capa y estrias de mate-
rial de suelo procedente de la capa superficial de color pardo
amarilloso oscuro se extienden dentro de esta capa. El sub-
strato es pardo amarilloso oscuro, moderadamente alcalino,
firme, levemente pegajoso y levemente plistico, de textura
arcillosa 16mica. Bajo esta capa hay roca tufacea semi-con-
solidada a una profundidad de alrededor de 16 pulgadas.
Estos suelos han estado mayormente en pastos nativos y
brefiales debido al declive.
Perfil representative de Malaya arcilloso, 20 a 60 porcien-
to de declive, erodado, 2.3 kil6metros al norte del pueblo de
Hormigueros, 46 metros al este del marcador de kil6metros
1.2, en la carretera no. 344.
Ap-0 a 6 pulgadas, pardo amarillento oscuro (10YR 314) arcilloso;
estructura granular d6bil-mediana; friable, levemente pega-
josa, levemente plistica; raicillas abundantes; algunas con-
creciones finas y negras; fragments comunes de roca fina y
median ocupan el 15 porciento del volume del horizonte;
ligeramente icidos; limited claro liso.
B-6 a 12 pulgadas, pardo (10YR 4/3) cascajo arcilloso estriado con
vetas pardo amarillento oscuras (10YR 3/4), color al frotarse
pardogris oscuro (10YR 4/2); estructura bloque subangular
d6bil-mediana; firme, pegajosa, plastica; raicillas comunes;
concreciones finas y negras; abundantes fragments finos y
medianos ocupan el 25 porciento del volume del horizonte;
suavemente alcalino; limited claro liso
C-12 a 16 pulgadas, pardo amarillento oscuro (10YR 4/4) limo-arcil-
loso con manchas comunes medianas, tenues pardo (10YR 5/
3), color al frotarse pardo (10YR 4/3); fire, levemente pega-
joso y levemente plistico, los pianos barnizados en oscuro;
abundancia de fragments medianos de roca parcialmente
meteorizada que puede ser desmenuzada entire los dedos;
moderadamente alcalino; limited gradual ondulante.
R-16 a 20 pulgadas + roca tobicea calcarea en estado semi-consoli-
dado.
El solum varia desde 9 hasta 15 pulgadas en espesor y la profundi-
dad a la roca dura, calcarea, tufacea, varia desde 12 hasta 20 pulgadas.
Fragmentos de roca volcanica, finos y medianos, comprenden desde el
15 hasta el 30 porciento, por volume, de cada horizonte. La reacci6n
varia desde median hasta levemente acida en el horizonte A, y desde
neutral a moderadamente alcalina en los horizontes B y C. Los hori-
zontes A y B tienen matices desde 5YR hasta 10YR y valores y cromas
de 3 y 4. El horizonte B tiene estructura subangular en bloques debil
que varia desde fina hasta median en clase. La textura del horizonte C
varia desde arcillosa l6mica hasta limo-arcilloso-16mico.
Malaya arcilloso, 20 a 60 porciento de decive, erodado
(McF2).-Este suelo esti en laderas y cumbres estrechas
fuertemente bisectadas de las alturas volcinicas, que tienen
alguna influencia caliza. El escurrimiento es ripido, y la
erosi6n es un peligro.
Se incluyen areas de Micara arcilloso, Caguabo arcilloso
16mico, y Quebrada limo-arcilloso, y afloraciones de roca
volcanica. Estas areas comprenden el 15 porciento o menos
del cuerdaje total.







MAYAGUEZ AREA OF WESTERN PUERTO RICO


This soil is not suitable for cultivation. Most of the
acreage is in native pasture and brush, but a few areas have
been used for pigeonpeas and tobacco. The use of this soil is
restricted mainly to grazing or wildlife habitat. Slope, shal-
lowness to bedrock, runoff, past erosion, and the hazard of
further erosion are limitations. Improvement of pasture by
such practices as fertilizing, seeding, and establishing water
control devices is not practical because of the physical soil
characteristics, such as slope and shallowness. Special care
should be taken to protect the soil so that erosion is con-
trolled and damage to adjacent areas is prevented. (Capabil-
ity unit VIIs-6; woodland groups 2dl, 2d2, 2d3, 3dl)



Maleza Series
The Maleza series consists of deep, well-drained soils
that are slightly acid to strongly acid and moderately perme-
able. These soils formed in Coastal Plain materials. The
slope ranges from 2 to 5 percent. The climate is subhumid.
Rainfall amounts to 50 to 65 inches, and the annual tempera-
ture ranges from 760 to 780 F.

In a representative profile the surface layer is reddish-
brown, slightly acid fine sandy loam about 10 inches thick.
The upper 7 inches of the subsoil is dark reddish-brown
slightly acid, friable, slightly sticky and slightly plastic
sandy clay loam. The lower part is red, slightly sticky and
slightly plastic clay more than 43 inches thick.


These soils have been used for subsistence crops, but
some small areas are in coconuts and an undergrowth of na-
tive pasture plants.
Representative profile of Maleza fine sandy loam, 2 to 5
percent slopes, 0.6 kilometer west of the town of Isabela,
0.8 kilometer on dirt road from kilometer marker 1.4 on
Highway No. 459, 6 meters west of dirt road.

Ap-0 to 10 inches, reddish-brown (5YR 4/3) fine sandy loam; single
grained; loose, very friable, slightly sticky and nonplastic;
common fine roots; slightly acid; clear, smooth boundary.
Bl-10 to 17 inches, dark reddish-brown (2.5YR 3/4) sandy clay loam;
weak, medium, subangular blocky structure; slightly hard,
friable, slightly sticky and slightly plastic; few fine roots; few
black sandy concretions; slightly acid; clear, smooth bounda-
ry.
B21t-17 to 34 inches, red (10R 4/6) clay; weak, medium, subangular
blocky structure; slightly hard, firm, slightly sticky and slight-
ly plastic; few fine roots; few patchy clay films on ped faces
and in root channels; common very fine concretions; slightly
acid; abrupt, wavy boundary.
B22t-34 to 60 inches +, red (2.5YR 4/6) clay; common, fine, distinct
mottles of weak red (10R 4/4) and strong brown (7.5YR 5/6);
weak, medium, subangular blocky structure; hard, firm,
slightly sticky and slightly plastic; few patchy clay films;
strongly acid.

Reaction ranges from slightly acid to strongly acid throughout the
profile. The A horizon has a hue of 5YR, a value of 4, and a chroma of
3 and higher. The B2t horizon ranges from sandy clay to clay in tex-
ture. It has a hue of 10R to 2.5YR, a value of 4, and a chroma of 4 and
higher. It has weak subangular blocky structure that ranges from medi-
um to coarse in class.


Este suelc no se presta para cosechas de cultivo limpio.
La mayor parte del cuerdaje esti en pastos natives y en
brefiales, pero algunas areas se han sembrado de gandules y
tabaco. El uso de este suelo esti restrict mayormente a
pastoreo o habitat de vida silvestre. El declive, la poco pro-
fundidad a la roca, el escurrimiento, la erosi6n pasada, y el
peligro de erosi6n en el future son limitaciones. El mejora-
miento de pastos por pricticas tales como abonamiento,
siembra, y el control de agua no es practice, debido a las
caracteristicas fisicas del suelo, tales como el declive y la
poca profundidad. Es precise tener un cuidado especial de
protejer este suelo, de manera que se puedan prevenir la
erosi6n y el perjuicio a areas adyacentes. (Unidad de capa-
cidad VIIs-6; grupos de bosques 2dl, 2d2, 2d3, 3dl)

Serie Maleza
La series Maleza consiste de suelos profundos, de buen
desagiie, que son de ligerament Acidos a fuertemente aci-
dos, y moderadamente permeables. Estos suelos se han
formado en materials de los llanos constaneros. El declive
varia desde 2 hasta 5 porciento. El clima es sub-htimedo. La
Iluvia es de 50 hasta 65 pulgadas, y la temperature annual va-
ria desde 76 hasta 78 F.
En un perfil representative la capa superficial es pardo
rojiza, levemente acida de textura arena fina 16mica y de
alrededor de 10 pulgadas de espesor. Las primeras 7 pulga-
das del subsuelo son pardo rojizo oscuras, levemente aci-
das, friable, levemente pegajosas y levementa plisticas, de
textura areno-arcillosa 16mica. La parte inferior es roja, lig-
eramente pegajosa y ligeramente plastica, de texture arcillo-
sa, y de mis de 55 pulgadas de espesor.
Estos suelos se han usado mayormente para cosechas
para el uso de la finca, pero algunas areas pequefias estAn en
cocos, con una vegetaci6n subscreciente de pastos nativos.
Perfil representative de Maleza arena fina 16mica, 2 a 5
porciento de declive, 0.6 kil6metro al oeste del pueblo de
Isabela, 0.8 kil6metro en un camino de tierra, desde el mar-
cador de kil6metro 1.4, en carretera no. 459, 6 metros al
oeste del camino de tierra.
Ap-0 a 10 pulgadas, pardo rojizo (5YR 4/3) arena fina 16mica; incoh-
erente; granos sueltos; muy friable, levemente pegajoso, no
plistico; raicillas comunes; levemente icido; limited claro liso.
B--10 a 17 pulgadas, pardo rojizo oscuro (2.5YR 3/4) arenoso arcil-
loso 16mico; estructura bloque subangular d6bil median;
consistencia levemente dura, friable, levemente pegajosa,
levemente plistica; algunas raicillas; algunas concreciones
negras y arenosas; ligeramente Acido; limited claro liso.
B21t-17 a 34 pulgadas, rojo (10YR 4/6) arcilloso; estructura bloque
subangular debil-mediana; consistencia levemente dura, leve-
mente pegajosa, levemente plistica; algunas raicillas; algunas
peliculas de arcilla recubriendo los pianos de los peds y las
cavidades de las raices; concreciones bien finas, comunes;
ligeramente Acido; limited s6bito ondulante.
B22t-34 a 60 pulgadas +, rojo (2.5YR 4/6) arcilloso, con manchas
finas, comunes, precisas, color rojo tenue (10R 4/4) y color
pardo fuerte (7.5YR 5/6); estructura bloque subangular d6bil-
mediano; consistencia dura, firme, levemente pegajosa, leve-
mente plastica; algunas peliculas de arcilla; fuertemente Aci-
do.
La reacci6n varia desde levemente acida hasta fuertemente acida, a
traves de todo el perfil. El horizonte A tiene matiz de 5YR, valor de 4,
y croma de 3 y mas alta. El horizonte B2t varia en textura desde areno-
arcillosa hasta arcillosa. Tiene matices de 10R y 2.5YR, valor de 4, y
cromas de 4 y mis altas. Tiene estructura d6bil subangular en bloque
que varia desde median hasta gruesa en clase.







SOIL SURVEY


Maleza fine sandy loam, 2 to 5 percent slopes (MdB)-This
soil is in the northwestern Coastal Plains. The available
water capacity is somewhat low in the surface layer. Ero-
sion is a moderate hazard.
Included in mapping were areas of Rio Lajas sand, Guer-
rero sand, and Jobos sandy loam. These areas make up 10
percent or less of the acreage.
There are some limitations to the use of this soil for clean
cultivation. Most of the acreage is in sugarcane, and some
of it is irrigated. Other areas are planted to papaya and vege-
tables, and small areas are in pangolagrass and native pas-
ture. Slope, erosion hazard, and available water capacity
are soil limitations. The amount of rainfall and the distribu-
tion are not optimum for farming. Careful management
practices are needed. (Capability unit IIs-1; not in a wood-
land group)



Mani Series
The Mani series consists of deep, somewhat poorly
drained soils that are medium acid-and moderately slowly
permeable. These soils are on low terraces slightly above
the flood plains along the rivers, in positions that are inter-
mediate between the Lares soils on the higher terraces and
the Coloso soils on the younger flood plains. They formed in
old alluvial sediments. The depth to a water table ranges
from 24 to 48 inches. The slope ranges from 0 to 2 percent.
The climate is humid. Rainfall amounts to 70 to 80 inches,
and the annual temperature ranges from 770 to 790 F.

In a representative profile the surface layer consists of
about 6 inches of brown, medium acid clay and a few fine
subrounded fragments of volcanic rock. The upper part of
the subsoil is brown, medium acid, firm, sticky and plastic
clay that has a few fine mottles of strong brown, gray, and
brownish yellow. The lower part, to a depth of about 32
inches, is strong brown, medium acid, firm, sticky and
plastic clay that has common fine mottles of gray and
brown. The substratum is gray, firm, sticky and plastic clay.


Most of the acreage has been in sugarcane for a long time.

Representative profile of Mani clay, 6.4 kilometers north
of the city of Mayaguez, 300 meters north of the northwest
corner of the Mayaguez Airport on dirt road, 3 meters from
road.
Ap-0 to 6 inches, brown (10YR 4/3) clay; weak, medium, granular
structure; firm, sticky and plastic; many fine roots; common
wormholes; few, fine, subrounded volcanic fragments; medi-
um acid; clear, smooth boundary.
Bl-6 to 12 inches, brown (10YR 4/3) clay; few, fine, distinct mottles
of strong brown (7.5YR 5/8), gray (2.5YR 6/0), and brownish
yellow (10YR 6/8); weak, medium, subangular blocky struc-
ture; firm, sticky and plastic; common fine roots; few fine
volcanic fragments; few wormholes; medium acid; clear,
smooth boundary.
B21-12 to 19 inches, strong-brown (7.5YR 5/6) clay; common, fine
distinct mottles of gray (10YR 5/1) and brown (10YR
4/3); weak, medium, subangular blocky structure; firm,
sticky and plastic; few fine roots; few, fine, volcanic frag-
ments; few, fine, black concretions; medium acid; clear,
smooth boundary.


Maleza arena fina 16mica, 2 a 5 porciento de declive-
(MdB).-Este suelo estf al noreste de los llanos costaneros.
La capacidad de retenci6n de humedad es un tanto baja en
la capa superficial. La erosi6n es un peligro moderado.
Se incluyen areas de Rio Lajas arenoso Guerrero areno-
so, y Jobos arenoso 16mico. Estas areas comprenden el 10
porciento o menos del cuerdaje total.
Hay algunas limitaciones para el uso de este suelo para
cosechas de cultivo limpio. La mayor parte del cuerdaje
esta en caiia de az6car, alguna de la cual esti bajo riego.
Otras areas estfn sembradas de papaya y de vegetables y al-
gunas areas pequefias estfn en yerba Pangola y en pastos
natives. El declive, el peligro de la erosion y la capacidad de
retenci6n de humedad son limitaciones del suelo. La canti-
dad de lluvia y la distribuci6n de 6sta no son optimas para
usos agricolas. Se requieren practices cuidadosas de mane-
jo. (Unidad de capacidad IIs-1; no esti en un grupo de
bosques)

Serie Mani
La series Mani consiste de suelos profundos de desagiie un
tanto pobre que son medianamente acidos y de permeabili-
dad moderadamente lenta. Estos suelos estain en terrazas
bajas ligeramente sobre el nivel de los llanos inundables a lo
largo de los rios, en posiciones que son intermedias entire los
suelos Lares en las terrazas mis altas y los suelos Coloso en
los llanos inundables. Se han formado de sedimentos aluvi-
ales mis viejos. La profundidad al nivel freitico varia desde
24 hasta 48 plugadas. El declive varia desde 0 hasta 2 por-
ciento. El clima es htimedo. La lluvia es de 70 hasta 80 pul-
gadas, y la temperature annual varia desde 77 hasta 79 F.
En un perfil representative la capa superficial es de alre-
dedor de 6 pulgadas, parda, medianamente Acida, de textura
arcillosa, y tiene algunos fragments de roca volcfnica finos
y redondeados. La parte superior del perfil es parda, medi-
anamente icida, firme, pegajosa y plistica, de textura arcil-
losa que tiene algunas manchas finas color pardo fuerte, gris
y amarilloso pardo. La parte inferior, hasta una profundidad
de 32 pulgadas, es pardo fuerte, medianamente acida, firme,
pegajosa y plistica, de textura arcillosa, que tiene algunas
manchas finas de color gris y parda. El substrato es gris,
firme, pegajoso, y plastico, de textura arcillosa.
La mayor parte del cuerdaje ha estado en caiia de azicar
por much tiempo.
Perfil representative de Mani arcilloso, 6.4 kil6metros al
norte de la ciudad de Mayaguez, 300 metros al norte de la
esquina noroeste del areopuerto de Mayaguez, en un cami-
no de tierra, y a 3 metros de este camino.
Ap-0 a 6 pulgadas, pardo (10YR 4/3) arcilloso; estructura granular
d6bil-mediana; consistencia fire, pegajosa, plfstica; abun-
dantes raicillas; abundantes cavidades de gusanos; algunos
fragments finos y redondeados de origen volcinico; medi-
anamente acido; limited claro liso.
Bl-6 a 12 pulgadas, pardo (10YR 4/3); arcilloso; con algunas manchas
finas y precisas, color pardo fuerte,(7.5YR 5/8), grises (2.5YR
6/0) y amarilla pardas (10YR 6/8); estructura bloque subangu-
lar d6bil median; consistencia fire, pegajosa, plastica; rai-
cillas comunes; algunos fragments volcanicos finos; algunas
cavidades de gusanos; medianamente icido; limited claro liso.
B21-12 a 19 pulgadas, pardo intense (7.5YR 5/6) arcilloso; con man-
chas comunes, finas y precisas, grises (10YR 5/1); y pardas
(10YR 4/3); estructura bloque subangular debil median; con-
sistencia firme, pegajosa, plastica; algunas raicillas finas; al-
gunos fragments volcinicos finos; algunas concreciones
negras y finas; medianamente icido; limited claro liso.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


B22-19 to 32 inches, strong-brown (7.5YR 5/6) clay; many, medium,
distinct mottles of gray (10YR 5/1); weak, fine, subangular
blocky structure; firm, sticky and plastic; few fine roots; few,
fine, black concretions; medium acid; clear, smooth bounda-
ry.
C-32 to 58 inches +, gray (10YR 5/1) clay; many, medium, distinct
mottles of strong brown (7.5YR 5/6); massive; firm, sticky
and plastic; few, fine, black concretions; medium acid.

The solum ranges from 23 to 41 inches in thickness. Reaction ranges
from slightly acid to medium acid. The A horizon has a hue of 7.5YR
and 10YR and a value and a chroma of 3 and 4. The B horizon has a
hue of 7.5YR and 10YR and a chroma of 3 and higher. It has weak
subangular blocky structure that ranges from fine to medium in class.
The B and C horizons are mottled with colors that have a chroma of 2
or less.
Mani silty clay loam, overwash (Mh).-This soil is nearly
level. It is wet, is subject to occasional flooding that causes
damage and, in a few places, has a perched water table. It is
on alluvial fans slightly above the flood plains. It has a pro-
file similar to the one described as representative of the se-
ries, but the surface layer is darker colored, moderately fine
textured instead of fine textured and 6 to 8 inches thick. The
subsoil and substratum are finer textured than those of Mani
clay and are mottled. The surface layer is fertile. Permeabil-
ity is moderately slow in the subsoil, and the available water
capacity is high.

Included in mapping were small areas of Toa silty clay
loam and Coloso silty clay loam. These areas make up 5
percent or less of the acreage.
This soil is suited to cultivated crops. Most of the acreage
has been in sugarcane for a long time. This soil is easily
worked. Flooding, permeability in the subsoil, a perched
water table, and wetness that can be corrected by drainage
are limitations. Careful management practices that include
the control of water are needed. When plowing, special care
should be taken to avoid mixing the surface layer with part
of the subsoil because the material in the subsoil is much
less fertile and harder to work. (Capability unit IIw-6; not in
a woodland group)

Mani clay (Mn)-This soil is nearly level. It is wet and is
subject to occasional flooding that causes damage. It is on
low terraces that are slightly higher than the flood plains
along the river. This soil has the profile described as repre-
sentative of the series. The available water capacity is high,
and fertility is medium.

Included in mapping were small areas of Coloso silty clay
loam and Lares clay. These areas make up 5 percent or less
of the acreage.
This soil is suitable for clean cultivation. Most of the
acreage has been in sugarcane for a long time, but small
areas are in pasture and subsistence crops. This soil is not
easily worked. Careful management practices are needed in
cultivated areas. Flooding, wetness that can be corrected by
drainage, and somewhat unfavorable workability are limita-
tions. The choice of plants and the timing of tilling, planting,
and harvesting are restricted. (Capability unit IIw-6; not in a
woodland group)


B22-19 a 32 pulgadas, pardo fuerte (7.5YR 5/6) arcilloso; con abun-
dantes manchas medianas, precisas, grises (10YR 5/1); es-
tructura bloque subangular d6bil fina; consistencia firme,
pegajosa, plastica; algunas raicillas; algunas concreciones
finas y negras medianamente Acido; limited claro liso.
C-32 a 58 pulgadas +, gris (10YR 5/1) arcilloso, con abundante man-
chas medianas, precisas, pardo fuerte (7.5YR 5/6); estructura
macisa; consistencia firme, pegajosa, plastica; algunas con-
creciones finas y negras; medianamente Acido.
El solum varia desde 23 hasta 41 pulgadas en espesor. La reacci6n
varia desde levemente Acida hasta medianamente Acida. El horizonte
A tiene matices de 7.5YR y 10YR, y valores y cromas de 3 y 4. El hori-
zonte B tiene matices de 7.5YR y 10YR, y valores y cromas de 3 y mis
altos. Tiene estructura debil subangular en bloque que varia desde fina
hasta median en clase. Los horizontes B y C tienen manchas de co-
lores que tienen cromas de 2 o menos.
Mani limo arcilloso 16mico, detrito de erosi6n (Mh).-Este
suelo es casi Ilano. Es hdmedo, y esti sujeto a inundaciones
ocasionales que causan perjuicio, y en algunos sitios tiene
un nivel freatico alto. Esta en abanicos de aluvi6n ligera-
mente mis altos que los Ilanos inundables. Tiene un perfil
similar al descrito como representative de la series, pero la
capa superficial es de color mis oscuro. Su textura es mod-
eradamente fina en vez de fina, y su espesor es de 6 a 8 pul-
gadas. El subsuelo y el substrato tienen textura mis fina que
la de Mani arcilloso, y tienen manchas. La capa superficial
es f6rtil. La permeabilidad es moderadamente lenta en el
subsuelo, y la capacidad de retenci6n de humedad es alta.
Se incluyen areas pequefias Toa limo arcilloso 16mico, y
de Coloso limo arcilloso 16mico. Estas areas alcanzan al 5
porciento o menos del cuerdaje total.
Este suelo se presta para cosechas de cultivo limpio. La
mayor parte del cuerdaje ha estado en cafia de azicar por
largo tiempo. El suelo es de facil laboreo. Las inundaciones,
la permeabilidad en el subsuelo, el nivel freitico alto, y el
encharcamiento, que puede ser corregido por desague, son
limitaciones. Requieren pricticas cuidadosas de manejo que
incluyen el control de las aguas. Al arar, es necesario tener
un cuidado especial para evitar mezclar la capa superficial
con la parte del subsuelo, porque el subsuelo es menos f6rtil
y de dificil laboreo. (Unidad de capacidad IIw-6; no esta en
un grupo de bosques)
Mani arcilloso (Mn).-Este suelo es casi llano. Es himedo
y esti sujeto a inundaciones ocasionales que causan perjui-
cios. Esti en terrazas bajas, ligeramente sobre el nivel de
los llanos inundables, a lo largo de los rios. Este suelo tiene
el perfil descrito como representative de la series. La capaci-
dad de retenci6n de humedad es alta, y la fertilidad es medi-
ana.
Se incluyen areas pequefias de Coloso limo arcilloso 16mi-
co, y de Lares arcilloso. Estas areas alcanzan al 5 porciento
o menos del cuerdaje total.
Este suelo se presta para las cosechas de cultivo limpio.
La mayor parte del cuerdaje ha estado en cafia de azticar
por largo tiempo, pero areas pequefias estin en pastos y en
cosechas para el uso en la finca. El suelo no es de ficil la-
boreo. Se requieren pricticas cuidadosas de manejo en las
areas cultivadas. Las inundaciones, el encharcamiento, que
puede corregirse con desague, y el laboreo, que es un tanto
desfavorable, son limitaciones. La selecci6n de plants y el
tiempo en que puede cultivarse, sembrarse, y recolectarse
las cosechas son restrictas. (Unidad de capacidad IIw-6; no
esti en un grupo de bosques)







SOIL SURVEY


Maresua Series
The Maresua series consists of moderately deep, well-
drained soils that are moderately permeable. These soils
formed in residual material weathered from serpentinite
rock, and serpentinite rock fragments make up more than 60
percent of the subsoil and substratum. The slope ranges
from 12 to 60 percent. The climate is humid. Rainfall
amounts to 60 to 70 inches, and the annual temperature
ranges from 780 to 800 F.
In a representative profile the surface layer is very dark
grayish-brown, medium acid silty clay loam about 6 inches
thick. The subsoil, to a depth of about 20 inches, is dark-
brown and dark yellowish-brown, mildly alkaline, friable,
slightly sticky and plastic gravelly clay and gravelly silty
clay loam. The substratum is weathered serpentinite rock.
Depth to semiconsolidated rock is more than 20 inches.


Most of the acreage is in native pasture and brush.

Representative profile of Maresua silty clay loam, 20 to 60
percent slopes, eroded, 0.8 kilometer northwest of the town
of San German, on Inter-American University farm, 0.5 kil-
ometer on road from aqueduct, 9 meters east of road.

Ap-0 to 6 inches, very dark grayish-brown (10YR 3/2) silty clay loam;
moderate, fine and medium, granular structure; friable,
slightly sticky and slightly plastic; many fine roots; common
serpentinite rock fragments 1/8 to 2 inches in diameter; medi-
um acid; clear, smooth boundary.
B2-6 to 12 inches, dark-brown (10YR 3/3) gravelly clay; weak, fine
and medium, subangular blocky structure parting to moder-
ate, fine, granular; friable, slightly sticky and plastic; com-
mon, fine roots; 60 percent, by volume, serpentinite rock
fragments 1/8 to 1 inch in diameter; mildly alkaline; clear,
smooth boundary.
B3-12 to 20 inches, dark yellowish-brown (10YR 4/4) gravelly silty
clay loam; weak, fine and medium, subangular blocky struc-
ture; friable, slightly sticky and slightly plastic; serpentinite
rock fragments that can be crushed between fingers make up
about 70 percent of the material; mildly alkaline; clear,
smooth boundary.
C-20 to 45 inches, weathered serpentinite rock that can be penetrat-
ed with a spade and that is dark greenish gray (5GY 4/1), pale
green (5G 7/2 to 6/2), grayish green (5G 5/2), light olive brown
(2.5Y 5/6), and yellowish brown (10YR 5/8); moderately alka-
line.
The solum ranges from 12 to 26 inches in thickness, and the depth to
semiconsolidated serpentinite rock is more than 20 inches. Rock frag-
ments make up 60 to 80 percent, by volume, of the subsoil and substra-
tum. Reaction ranges from slightly acid to medium acid in the A hori-
zon and mildly to moderately alkaline in the B and C horizons. The A
horizon has a hue of 10YR, and when moist a value and a chroma of 2
and 3. The B horizon ranges from gravelly silty clay loam to clay in
texture and has a hue of 10YR and a value and a chroma of 3 and 4.


Serie Mares6a
La series Mares6a consiste de suelos moderadamente pro-
fundos, de buen desagiie, y que son moderadamente perme-
ables. Estos suelos se han formado en materials residuales
meteorizados de la roca serpentinita, y fragments de roca
serpentinita comprenden mas del 60 porciento del subsuelo
y del substrato. Los declive varian desde 12 hasta 60 por-
ciento. El clima es h6medo. La lluvia es de 60 hasta 70 pul-
gadas, y la temperature annual varia desde 78" hasta 800 F.
En un perfil representative la capa superficial es pardo
grisacea, muy oscura, medianamente icida, de textura limo-
arcillosa 16mica, y de alrededor de 6 pulgadas de espesor. El
subsuelo, hasta una profundidad de 20 pulgadas, es pardo
oscuro, suavemente alcalino, friable, levemente pegajoso y
plistico, de textura cascajo arcillosa, y cascajo limo-arcil-
losa 16mica. El substrato consiste de roca serpentinita me-
teorizada. La profundidad a la roca semi-consolidada es de
mis de 20 pulgadas.
La mayor parte del cuerdaje esti en pastos natives y en
brefiales.
Perfil representative de Maresta limo arcilloso 16mico, 20
a 60 porciento de declive, erodado, 0.8 kil6metros al no-
roeste del pueblo de San German, en la finca de la Universi-
dad Interamericana, 0.5 kil6metros en el camino del acued-
ucto, y 9 metros al este de este camino.
Ap-0 a 6 pulgadas, pardo grisaceo, bien oscuro (10YR 3/2) limo arcil-
loso 16mico; estructura granular, moderadamente fina y medi-
ana; consistencia friable, levemente pegajosa, levemente
plistica; raicillas abundantes; fragments comunes de ser-
pentinita de 1/8 a 2 pulgadas de diametro:; medianamente aci-
do; limited claro liso.
B2-6 a 12 pulgadas, pardo oscuro (10YR 3/3) cascajo arcilloso; es-
tructura bloque subangular, d6bil fina y median, rompi&n-
dose en estructura granular, moderada final; consistencia fria-
ble, levemente pegajosa, plistica; raicillas comunes; los frag-
mentos de roca serpentinita, de tamafio 1/8 a I pulgada, com-
ponen el 60 porciento del volume; suavemente alcalino; lim-
ite claro liso.
B3-12 a 20 pulgadas, pardo amarillo oscuro (10YR 4/4) cascajo limo
arcilloso 16mico; estructura bloque subangular d6bil, fina y
median; consistencia friable, levemente pegajosa y leve-
mente plfstica; los fragments desmenusables entire los de-
dos componen 70 porciento del volume; suavemente alcali-
no; limited claro liso.
C-20 a 45 pulgadas +; roca serpentinita meteorizada, que la pala
puede penetrar, esta veteado con los siguientes colors; gris
verde oscuro (5GY 4/1); verde pilido (5G 712 a 6/2), verde
grisiceo (5G 5/2), pardo-oliva claro (2.5Y 5/6), pardo amaril-
lento (10YR 5/8); moderadamente alcalino.
El solum varia desde 12 hasta 26 pulgadas en espesor, y la profundi-
dad a la roca serpentinita semi-consolidada es de mias de 20 pulgadas.
Los fragments de roca comprenden desde 60 hasta el 80 porciento
por volume del subsuelo y del substrato. La reacci6n varia desde
levemente acida hasta medianamente Acida, en el horizonte A, y es de
suavemente hasta moderadamente alcalina en los horizontes B y C. El
horizonte A tiene matiz de 10YR, y cuando esti h6medo valores y
cromas de 2 y 3. El horizonte B varia desde cascajoso limo arcilloso
16mico hasta arcilloso en textura, y tiene matiz de 10YR y valor y cro-
ma de 3 y 4.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


Maresua silty clay loam, 12 to 20 percent slopes, eroded
(MoD2).-This soil is on the side slopes and rounded hill-
tops of low hills that are underlain by serpentinite rocks. It
has a profile similar to the one described as representative
of the series, but the combined surface layer and subsoil are
slightly thicker. This soil has been less affected by erosion
than Maresua silty clay loam, 20 to 60 percent slopes. The
surface layer is very dark grayish-brown or very dark brown
silty clay loam 8 to 10 inches thick. The subsoil is brown,
friable gravelly clay 6 to 8 inches thick. Runoff is medium,
and erosion is a severe hazard. The available water capacity
is moderate, and fertility is medium.

Included in mapping were small spots of Serpentinite out-
crop.
This soil is suitable for occasional but not regular clean
cultivation. Most of the acreage is in native pasture and low
brush, but small areas are used for sugarcane, tobacco, and
pigeonpeas. Slope, runoff, past erosion, and hazard of fur-
ther erosion are severe limitations. Careful management
practices are needed in cultivated areas. Crops respond well
to fertilizer. (Capability unit IVe-19; woodland groups 2dl,
2d2,2d3,3dl)

Maresua silty clay loam, 20 to 60 percent slopes, eroded-
(MoF2).-This soil is on strongly dissected side slopes and
narrow ridgetops of volcanic uplands that are underlain by
serpentinite rock. It has the profile described as representa-
tive of the series. Runoff is rapid, and erosion is a severe
hazard.
Included in mapping were areas of Santa Marta clay,
Rosario clay, and Serpentinite outcrop. These areas make
up 10 percent or less of the acreage.
This soil is not suitable for clean cultivation. Its use is re-
stricted mainly to grazing, woodland, or wildlife habitat.
Most of the acreage is in native pasture that has low carry-
ing capacity and brush, but a few of the lower slopes have
been cultivated and used for pigeonpeas and tobacco.
Slope, runoff, past erosion, and hazard of further erosion
are severe limitations. Improvement of pasture by such
practices as fertilizing, seeding, and establishing water-con-
trol devices is practical. (Capability unit VIe-19; woodland
groups 2dl, 2d2, 2d3, 3d1)


Mariana Series
The Mariana series consists of moderately deep, well-
drained soils that are very strongly acid and moderately
permeable. These soils formed in residual material weath-
ered from fine-grained, light-colored volcanic rock. The
slope ranges from 12 to 40 percent. The climate is semiarid.
Rainfall amounts to 30 to 40 inches, and the annual tempera-
ture ranges from 780 to 810 F.


Maresuta limo arcilloso 16mico, 12 a 20 porciento de declive,
erodado (MoD2).-Este suelo esta en las laderas y en las
cumbres redondeadas de montes bajos que tienen rocas de
serpentinita subyacentes. Tiene un perfil similar al descrito
como representative de la series, pero el espesor combinado
de la capa superficial y del subsuelo es un poco mas grueso.
Este suelo ha sido menos afectado por la erosi6n que Mare-
sfia limo arcilloso 16mico, 20 a 60 porciento de declive. La
capa superficial es pardo-grisicea bien oscura o pardo muy
oscura, de textura limo arcillosa 16mica, y de 8 a 10 pulgadas
de espesor. El subsuelo es pardo, friable, cascajo-arcilloso
y de 6 a 8 pulgadas de espesor. El escurrimiento es median,
y la erosion es un peligro severe. La capacidad de retenci6n
de humedad es moderada y la fertilidad es median.
Se incluyen areas pequefias de afloraciones de serpentini-
ta.
Este suelo se presta para cultivo occasional pero no regu-
lar. La mayor parte del cuerdaje esti en pastos nativos y en
brefiales bajos, pero areas pequefias se usan para la siembra
de cafia de azucar, tabaco, y gandules. El declive, el escurri-
miento, erosion pasada, y el peligro de erosion en el future
son limitaciones several. Se necesitan practices cuidadosas
de manejo en las areas que se cultivan. Las cosechas res-
ponden bien a la aplicaci6n de abonos. (Unidad de capaci-
dad IVe-19; grupos de bosques 2d1, 2d2, 2d3, 3dl)
Maresta limo arcilloso 16mico, 20 a 60 porciento de declive,
erodado (MoF2).-Este suelo esti en laderas y cumbres es-
trechas fuertemente bisectadas de las alturas volcinicas que
tienen roca serpentinita subyacente. Tiene el perfil descrito
como representative de la series. El escurrimiento es ripido,
y la erosi6n es un peligro severe.
Se incluyen areas de Santa Marta arcilloso, Rosario arcil-
loso, y afloraciones de serpentinita. Estas areas alcanzan al
10 porciento o menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esta restrict mayormente a pastoreo, bosques, y
habitat de vida silvestre. La mayor parte del cuerdaje esta
en pastos natives de baja productividad y en brefiales, pero
algunos de los declives mas llevaderos han sido cultivados y
se han usado para gandules y para tabaco. El declive, el
escurrimiento, la erosi6n pasada, y el peligro de erosion en
el future son limitaciones several. El mejoramiento de pas-
tos por pricticas tales como abonamiento, siembra, y el
control de agua son practices. (Unidad de capacidad VIe-
19; grupos de bosques 2dl, 2d2, 2d3, 3dl)

Serie Mariana
La series Mariana consiste de suelos moderadamente pro-
fundos, de buen desague, que son muy fuertemente acidos y
moderadamente permeables. Estos suelos se han formado
en materials residuales meteorizados de roca volcinica, de
color claro y de grano fino. El declive varia desde 12 hasta
40 porciento. El clima es semi-irido. La lluvia es de 30 hasta
40 pulgadas, y la temperature annual varia desde 780 hasta 81
F.







SOIL SURVEY


In a representative profile the surface layer is brown,
very strongly acid, gravelly clay about 6 inches thick. Fine
to coarse pebbles make up 30 percent of this layer. The sub-
soil, to a depth of about 26 inches, is red, brown, and red-
dish-yellow, very strongly acid, firm, slightly sticky and
plastic clay. The substratum consists of extremely acid,
friable, slightly sticky and plastic, weathered rock that is
variegated with reddish yellow, red, white, and dark brown.
The depth to semiconsolidated rock is more than 20 inches.


Most of the acreage is in native and brushy pasture.

Representative profile of Mariana gravelly clay, 20 to 40
percent slopes, eroded, 3.2 kilometers southeast of the town
of Cabo Rojo, 2.1 kilometers on dirt road from kilometer
marker 3.6 on Highway No. 314, 30 meters south of fence.

Ap-0 to 6 inches, gravelly clay that is brown (7.5YR 4/2) moist and
brown (7.5YR 5/4) dry; moderate, fine, granular structure;
soft, friable, slightly sticky and slightly plastic; many fine
roots; 30 percent, by volume, is fine to coarse pebbles; very
strongly acid; clear, smooth boundary.
B1-6 to 16 inches, red (2.5YR 4/6) and brown (7.5YR 4/2) clay; yel-
lowish red (5YR 4/8) crushed; about 5 percent fine gravel;
weak, fine and medium, subangular blocky structure; firm,
slightly sticky and plastic; common fine roots; few clay films
in root channels; very strongly acid; clear, smooth boundary.
B2-16 to 26 inches, red (10R 4/6) and reddish-yellow (5YR 6/8) clay;
red (2.5YR 4/8) crushed; weak, medium subangular blocky
structure; firm, slightly sticky and plastic; few fine roots;
few, thin, discontinuous clay films in root channels; very
strongly acid; gradual, wavy boundary.
C-26 to 38 inches +, clay (saprolite) variegated with reddish yellow
(5YR 6/8), red (10R 4/6), white (5YR 8/1), and dark brown
(7.5YR 4/2); reddish yellow (5YR 6/8) crushed; massive; fria-
ble slightly sticky and plastic; extremely acid.

The solum ranges from 16 to 28 inches in thickness. Fine to coarse
pebbles make up 20 to 40 percent of the A horizon and 0 to 10 percent
of the B and C horizons. Reaction ranges from very strongly acid to
extremely acid. The A horizon has a hue of 5YR and 7.5YR, a value of
4, and a chroma of 2 to 4. The colors of the B horizon are shades of
red, brown, and yellow. It has weak subangular blocky structure that
ranges from fine to medium in class. The B and C horizons range from
clay loam to clay in texture. The structure of the parent rock is evident
in the C horizon.

Mariana gravelly clay, 12 to 20 percent slopes,
eroded (MpD2).-This soil is on foot slopes and broad hill-
tops on volcanic uplands adjoining the Lajas Valley area. It
has a profile similar to the one described as representative
of the series, but the surface layer is slightly thicker. Runoff
is medium.
Included in mapping, especially on hilltops, were some
spots of severely eroded soil in which the substratum is
exposed. Also included were small spots of soil that formed
in colluvium and that has a thicker surface layer. These
areas make up 5 percent or less of the acreage.

This soil is not suitable for clean cultivation. Its use is re-
stricted mainly to pasture, range, or wildlife habitat. Most
of the acreage is in native pasture that has low carrying ca-
pacity, but some areas are in brush. Slope, runoff, and past
erosion are limitations. The low rainfall is also unfavorable.
(Capability unit VIe-8; not in a woodland group)


En un perfil representative la capa superficial es parda,
muy fuertemente icida, cascajosa arcillosa y de alrededor
de 6 pulgadas de espesor. Cascajo, que varia desde fino has-
ta grueso, comprende el 30 porciento de esta capa. El sub-
suelo, hasta una profunidad de 26 pulgadas, es rojo, pardo,
y amarillo rojizo, muy fuertemente icido, fire, levemente
pegajoso y plistico, de textura arcillosa. El substrato cons-
iste de roca meteorizada que es extremadamente acida, fria-
ble, levemente pegajosa, y plistica, que esti veteada con
colors amarillo, rojo, blanco, y pardo oscuro. La profundi-
dad a la roca semi-consolidada es de mas de 20 pulgadas.
La mayor parte del cuerdaje esta en pastos nativos y en
pastos enmalezados.
Perfil representative de Mariana cascajoso arcilloso, 20 a
40 porciento de declive, erodado, 3.2 kil6metros al sureste
del pueblo de Cabo Rojo, 2.1 kil6metros en un camino de
tierra desde el marcador de kil6metros 3.6, en la carretera
no. 314, 30 metros al sur de la cerca.
Ap-0 a 6 pulgadas, pardo (7.5YR 4/2) en humedo y pardo (7.5YR 5/4)
en seco; cascajoso arcilloso; estructura granular moderada-
fina; consistencia blanda, friable, levemente pegajosa, leve-
mente plastica; muchas raicillas; el cascajo, de fino a grueso,
alcanza 30 porciento por volume; bien fuertemente icido;
limited claro liso.
Bl-6 a 16 pulgadas, rojo (2.5YR 4/6) y pardo (7.5YR 4/2), rojo-amar-
illento (5YR 4/8) al frotarse; arcilloso con 5 porciento de cas-
cajo fino; estructura bloque subangular d6bil final y median;
consistencia firme, levemente pegajosa, plastica; raicillas
comunes; algunas peliculas de arcillas revistiendo las cavi-
dades de races; bien fuertemente icido; limited claro liso.
B2-16 a 26 pulgadas, rojo (10R 4/6), amarillo-rojizo (5YR 6/8), rojo
(2.5YR 4/8) al frotarse; arcilloso; estructura bloque subangu-
lar d6bil median; consistencia fire, levemente pegajosa,
plistica; algunas raicillas; algunas peliculas finas y interrum-
pidas de arcilla revistiendo las cavidades de races: bien
fuertemente Acido; limited gradual ondulante.
C-26 a 38 pulgadas +, saprolito veteado con colors tales como:
amarillo-rojizo (5YR 6/8); rojo (10R 4/6), blanco (5YR 8/1), y
pardo oscuro (7.5YR 4/2); color amarillo rojizo (5YR 6/8) al
frotarse; arcilloso; estructura macisa; consistencia friable,
levemente pegajoso, plastico; extremadamente Acido.
El solum varia desde 16 hasta 28 pulgadas en espesor. Cascajo, que
varia desde fino hasta grueso, comprende desde el 20 hasta el 40 por-
ciento del horizonte A, y desde 0 hasta 10 porciento de los horizontes
B y C. La reacci6n varia desde muy fuertemente Acida hasta extrema-
damente Acida. El horizonte A tiene matices de 5YR y 7.5YR, valor de
4, y cromas desde 2 hasta 4. Los colors del horizonte B son en tonos
de rojo, pardo, y amarillo. Tiene estructura subangular en bloque dbil
que varia desde fina hasta median en clase. Los horizontes B y C va-
rian en textura desde arcilloso 16mico hasta arcillloso. La estructura de
la roca madre es evidence en el horizonte C.
Mariana cascajoso arcilloso, 12 a 20 porciento de declive,
erodado (MpD2).-Este suelo esti en las faldas y en las
cumbres amplias de las alturas volcinicas adyacentes al
area del Valle de Lajas. Tiene un perfil similar al descrito
como representative de la series, pero la capa superficial es
un poco mis gruesa. El escurrimiento es median.
Se incluyen, especialmente en las cumbres, algunas areas
severamente erodadas del suelo en el cual el substrato esti
expuesto. Tambien se incluyen pequefias areas de suelo que
se ha formado de materials coluviales y que tienen una
capa superficial mis gruesa. Estas areas comprenden el 5
porciento o menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esti restrict mayormente a pastos, a pastizales, o
habitat de vida silvestre. La mayor parte del cuerdaje esta
en pastos natives de baja productividad, pero algunas areas
estin en brefiales. El declive, el escurrimiento, la erosion
pasada son limitaciones. La poca luvia es tambi6n desfa-
vorable. (Unidad de capacidad VIe-8; no esta en un grupo
de bosques)






MAYAGUEZ AREA OF WESTERN PUERTO RICO


Mariana gravelly clay, 20 to 40 percent slopes, eroded
(MpE2).-This soil is on side slopes and ridges of volcanic
uplands adjoining the Lajas Valley. It has the profile de-
scribed as representative of the series. Runoff is rapid, and
erosion is a severe hazard.
Included in mapping were some areas of Descalabrado
clay loam and some spots of severely eroded soils in which
the variegated colors of the substratum are noticeable on
the surface. These areas make up 10 percent or less of the
acreage.
This soil is not suitable for clean cultivation. Its use is re-
stricted mainly to grazing or wildlife habitat. Most of the
acreage is in native pasture that has low carrying capacity,
but some areas are in brush. Slope, runoff, past erosion, and
hazard of further erosion are severe limitations. The climate
is unfavorable because the rainfall is low. (Capability unit
VIIe-11; not in a woodland group)


Maricao Series
The Maricao series consists of well-drained soils that are
very strongly acid and moderately permeable. These soils
formed in residual material weathered from volcanic rock
and tuffaceous mudstone. The slope ranges from 20 to 60
percent. The climate is humid. Rainfall amounts to 90 to 110
inches, and the annual temperature ranges from 72 to 77 F.
These soils occur mainly in areas of high altitude where the
mean annual soil temperature, at a depth of 20 inches, is
lower than 72 F.

In a representative profile the surface layer is reddish-
brown, very strongly acid clay about 5 inches thick. The
subsoil, to a depth of about 24 inches, is red, very strongly
acid, firm, slightly sticky and slightly plastic clay. The sub-
stratum is thick, very strongly acid, friable, nonsticky and
lightly plastic silty clay loam in variegated colors. The
depth to semiconsolidated rock is more than 4 feet.


Most of the acreage is in brush and native pasture, but a
few areas are in coffee.
Representative profile of Maricao clay, 20 to 60 percent
slopes, eroded, 11.2 kilometers southeast of the town of
Maricao, 2.3 kilometers on dirt road south of kilometer
marker 44.5 on Highway No. 105, 25 meters west of dirt
road.
Ap-0 to 5 inches, reddish-brown (5YR 4/4) clay; some mixing with
red (2.5YR 5/8) material from underlying B2t horizon; weak,
fine and medium, subangular blocky structure parting to
moderate, medium, granular; firm, slightly sticky and slightly
plastic; many fine roots; slight worm activity; very strongly
acid; clear, smooth boundary.
B2t-5 to 14 inches, red (2.5YR 5/8) clay; coatings of light red (2.5YR
6/8) and yellowish red (5YR 5/8); weak, medium, subangular
blocky structure; thin patchy clay films; firm, slightly sticky
and slightly plastic; common fine roots; 10 percent of material
is saprolite; few weathered rock fragments; very strongly
acid; clear, wavy boundary.
B3-14 to 24 inches, red (2.5YR 5/8) clay; among the mixed colors
from the sapolite are red, yellow, brown, and light gray; 40
percent of this horizon is saprolite; weak, fine, subangular
blocky structure; friable, slightly sticky and slightly plastic;
few fine roots; very strongly acid; clear, wavy boundary.


Mariana cascajo arcilloso, 20 a 40 porciento de declive,
erodado (MpE2).-Este suelo esti en laderas y en cumbres
en las alturas volcinicas adyacentes al Valle de Lajas. Tiene
el perfil descrito como representative de la series El escurri-
miento es ripido, y la erosi6n es un peligro severe.
Se incluyen algunas areas de Descalabrado arcilloso 16mi-
co y algunas areas pequefias que estin severamente eroda-
das y en las cuales los colors veteados del substrato se
pueden ver en la superficie. Estas areas alcanzan al 10 por-
ciento o menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esta restrict mayormente a pastoreo y a habitat de
vida silvestre. La mayor parte del cuerdaje esta en pastos
natives de baja productividad, pero algunas areas estan en
brefiales. El declive, el escurrimiento, la erosi6n pasada, y
el peligro de erosi6n en el future son limitaciones several.
El clima es desfavorable porque la lluvia es muy baja. (Uni-
dad de capacidad VIIe-11; no esta en un grupo de bosques)

Serie Maricao
La series Maiicao consiste de suelos de buen desagiie que
son muy fuertemente acidos y moderadamente permeables.
Estos suelos se han formado en materials residuales, me-
teorizados de roca volcAnica y cienos tuficeos. El declive
varia desde 20 hasta 60 porciento. El clima es htmedo. La
Iluvia es de 90 hasta 110 pulgadas, y la temperature annual
varia desde 72 hasta 770 F. Estos suelos ocurren mayor-
mente en areas de alta elevaci6n, donde la temperature
promedio annual a una profundidad de 20 pulgadas es menor
de 72 F.
En un perfil representative la capa superficial es pardo
rojiza, muy fuertemente acida y de alrededor de 5 pulgadas
de espesor. El subsuelo, hasta una profundidad de alrede-
dor de 24 pulgadas, es rojo, muy fuertemente Acido, firme,
ligeramente pegajoso y ligeramente plistico. El substrato es
grueso, muy fuertemente Acido, friable, no pegajoso y leve-
mente plistico, de textura limo arcilloso 16mica, y con co-
lores veteados. La profundidad a la roca semi-consolidada
es mayor de 3 pies.
La mayor parte del cuerdaje esta en brefiales y en pastos
natives, pero algunas areas estfn en caf6.
Perfil representative de Maricao arcilloso, 20 a 60 por-
ciento de declive, erodado, 11.2 kil6metros al sureste del
pueblo de Maricao, 2.3 kil6metros en un camino de tierra al
sur del marcador de kil6metros 44.5, en la carretera no. 105,
25 metros al oeste de este camino de tierra.
Ap-0 a 5 pulgadas, pardo rojizo (5YR 4/4) arcilloso, mezclado con
material rojo (2.5YR 5/8) procedente del horizonte B2t suby-
acente; estructura en bloque subangular d6bil fina y mediana-
rompi6ndose en granular moderada median; consistencia
firme, ligeramente pegajosa, ligeramente plistica; raicillas
abundantes; pocas cavidades de gusanos; bien fuertemente
Acido; limited claro liso.
B2t-5 a 14 pulgadas, rojo (2.5YR 5/8) arcilloso con revestimiento rojo
claro (2.5YR 6/8) y rojo amarillento (5YR 5/8); estructura en
bloque subangular d6bil median; peliculas finas de arcilla; de
consistencia firme, ligeramente pegajoso, ligeramente plisti-
co; raicillas comunes; el 10 porciento del horizonte es saproli-
to; pocos fragments de roca meteorizada; bien fuertemente
Acido; limited claro ondulante.
B3-14 a 24 pulgadas, rojo (2.5YR 5/8) arcilloso, salpicado de colors
procedentes del saprolito tales como rojo, amarillo, pardo y
gris claro; el 40 porciento de este horizonte consiste de sap-
rolito; estructura bloque subangular d6bil fina; de consisten-
cia friable, ligeramente pegajosa, ligeramente plastica; pocas
raicillas; bien fuertemente acido; limited claro ondulante.






SOIL SURVEY


C-24 to 48 inches +, silty clay loam (saprolite) that is variegated with
colors of the saproljte; red (2.5YR 5/8) crushed; massive;
friable, nonsticky and slightly plastic; very strongly acid.

The annual soil temperature ranges from 680 to 72 F. The solum
ranges from 18 to 28 inches in thickness, and the depth to semiconsoli-
dated tuffs, mudstone, or lava is more than 4 feet. The A horizon has a
hue of 2.5YR and 5YR, a value of 4 and 5, and a chroma of 4 and high-
er. The B2t horizon has a hue of 2.5YR and 5YR, a value of 4 and 5,
and a chroma of 6 and higher. It has weak subangular blocky structure
that range from fine to medium in class and thin clay films that range
from patchy to discontinuous. Saprolite makes up 10 to 20 percent of
the B2t horizon and 20 to 60 percent of the B3 horizon.

Maricao clay, 20 to 60 percent slopes, eroded (MrF2).-
This soil is on strongly dissected side slopes and narrow
ridges in the higher and more humid areas of the volcanic
uplands. Runoffis rapid, and erosion is a hazard.

Included in mapping were small areas of Los Guineos
clay and Cuchillas silty clay loam and some spots of severe-
ly eroded soil where the substratum is exposed at the sur-
face. These areas make up 10 percent or less of the acreage.

This soil is not suited to cultivated crops. Its use is limited
mainly to grazing, woodland, or wildlife habitat. Most of the
acreage is in abandoned coffee or brush, but some areas are
in native pasture that has low carrying capacity. Slope, run-
off, past erosion, and the hazard of further erosion are limi-
tations. The improvement of pasture by such practices as
liming, fertilizing, seeding, and establishing water control
devices is not practical. (Capability unit VIIe-6; woodland
group lo3, lo4)


Matanzas Series
The Matanzas series consists of deep, well-drained soils
that are moderately permeable. These soils are on gentle
foot slopes and in small valleys. They formed in materials
washed from the adjacent limestone hills. The slope ranges
from 2 to 5 percent. The climate is subhumid. Rainfall
amounts to 50 to 65 inches, and the annual temperature
ranges from 78 to 790 F.
In a representative profile the surface layer is thick, dark
reddish-brown, neutral clay about 14 inches thick. The up-
per part of the subsoil is dusky-red, neutral, friable, slightly
sticky and plastic clay. The lower part is dark-red, neutral,
slightly sticky and plastic clay. The depth to fragmental
limestone is about 44 inches.


These soils are in sugarcane, native pasture, and subsist-
ence crops.
Representative profile of Matanzas clay, 2 to 5 percent
slopes, 41 meters east of kilometer marker 125 on Highway
No. 2, on south side of highway.
Ap-0 to 14 inches, dark reddish-brown (2.5YR 3/4) clay; moderate,
coarse, granular structure; firm, slightly sticky and slightly
plastic; few black aggregates consisting of sand-size parti-
cles; common fine roots; neutral; gradual, smooth boundary.
B21-14 to 27 inches, dusky red (10R 3/4) clay; weak, medium, suban-
gular blocky structure parting to moderate, fine, granular;
friable, slightly sticky and plastic; very fine granules in micro-
channels; many medium pores; common fine roots; neutral;
gradual, smooth boundary.


C-24 a 48 pulgadas +, veteado con colors del saprolito; rojo (2.5YR
5/8) al frotarse; limo arcilloso 16mico; estructura macisa;
consistencia friable, no pegajosa, ligeramente plistica; bien
fuertemente icida.
La temperature annual del suelo varia desde 68 hasta 72 F. El solum
varia desde 18 hasta 28 pulgadas en espesor, y la profundidad a las
rocas tufaceas, cienos tobaceos o lava semi-consolidada es de mis de
4 pies. El horizonte A tiene matices de 2.5YR y 5YR, valores de 4 y 5,
y cromas de 4 y mis altas. El horizonte B2t tiene matices de 2.5YR y
5YR, valores de 4 y 5, y cromas de 6 y mis altas. Tiene estructura su-
bangular en bloques debil que varia desde fina hasta median en clase.
Las peliculas de arcilla varian desde descontinuas hasta en parches. El
saprolito alcanza desde el 10 hasta el 20 porciento del horizonte B2t, y
desde el 20 hasta el 60 porciento del horizonte B3.
Maricao arcilloso, 20 a 60 porciento de declive, erodado
(MrF2).-Este suelo esti en laderas y cumbres estrechas
que estin fuertemente bisectadas en las areas mis altas y
mis htimedas de las alturas volcinicas. El escurrimiento es
ripido y la erosi6n es un peligro.
Se incluyen areas pequefias de Los Guineos arcilloso, de
Cuchillas limo-arcilloso 16mico y algunas areas pequefias
del suelo severamente erodado, donde el substrato esti
expuesto en la superficie. Estas areas comprenden el 10
porciento o menos del cuerdaje total.
Este suelo no se presta para cosechas de cultivo limpio.
Su uso esti limitado mayormente a pastoreo, bosques, o
habitat de vida silvestre. La mayor part del cuerdaje esti
en caf6 abandonado o en brefiales, pero algunas areas estin
en pastos nativos de baja productividad. Declive, el escurri-
miento, la erosi6n pasada y el peligro de erosi6n en el future
son limitaciones. El mejoramiento de pastos por pricticas
tales como encalamiento, abonamiento, siembra, y pricti-
cas para el control del agua no es prActico. (Unidad de capa-
cidad VIIe-6; grupos de bosques 1o3, lo4)

Serie Matanzas
La series Matanzas consiste de suelos profundos, de buen
desagiie, que son moderadamente permeables. Estos suelos
estin en laderas y en valles pequefios. Se han formado de
materials lavados desde las lomas calizas adyacentes. El
declive varia desde 2 hasta 5 porciento. El clima es subh6i-
medo. La lluvia es de 50 hasta 65 pulgadas, y la temperature
annual varia desde 780 hasta 790 F.
En un perfil representative la capa superficial es gruesa,
de color pardo rojizo oscura, neutral, de textura arcillosa y
de alrededor de 14 pulgadas de espesor. La parte superior
del subsuelo es rojo mate, neutral, friable, levemente pega-
josa y plistica, de textura arcillosa. La parte inferior del
perfil es rojo oscura, neutral, levemente pegajosa y plistica,
de textura arcillosa. La profundidad a la roca caliza frag-
mentaria es de alrededor de 44 pulgadas.
Estos suelos estfn en cafia de azicar, pastos natives, y
cosechas para el uso en la finca.
Perfil representative de Matanzas arcilloso, 2 a 5 porcien-
to de declive, 41 metros al este del marcador de kil6metros
125 en la carretera no. 2, al lado sur de la carretera.
Ap-0 a 14 pulgadas, pardo rojizo oscuro (2.5YR 3/4) arcilloso; estruc-
tura granular moderadamente gruesa; consistencia fire, lig-
eramente pegajosa, ligeramente plistica; con pocos agrega-
dos negros de tamafio arenoso; con raicillas comunes; neu-
tral; limited gradual liso.
B21-14 a 27 pulgadas, rojo mate (10R 3/4) arcilloso; estructura en
bloque subangular d6bil median, que fracciona a granular
moderadamente fino; consistencia friable, ligeramente pega-
josa, plistica; granules bien finos en micro-canales; muchos
poros medianos; con raicillas comunes; neutral; limited grad-
ual liso.






MAYAGUEZ AREA OF WESTERN PUERTO RICO


B22-27 to 44 inches, dark-red (2.5YR 3/6) clay; weak, coarse, suban-
gular blocky structure parting to moderate, fine, granular;
friable, slightly sticky and plastic; few fine roots; neutral;
abrupt, irregular boundary.
R-44 to 46 inches +, white fragmental limestone that has faces
stained dark red.
The thickness of the solum and the depth to fragmental limestone
range from 40 to 50 inches. Reaction ranges from slightly acid to neu-
tral. The A horizon has a hue of 5YR and 2.5YR, a value of 3, and a
chroma of 2, 3, and 4. The B horizon has a hue of 2.5YR and 10R, a
value of 3, and a chroma of 4 to 6. It has weak, subangular structure
that ranges from coarse to medium in class.
Matanzas clay, 2 to 5 percent slopes (MsB).-This soil is
on foot slopes and in small valleys between the limestone
hills. It has the profile described as representative of the se-
ries. The available water capacity is moderate, and fertility
is medium. Erosion is a hazard.
Included in mapping were small areas of Coto clay and
Tanama clay. These areas make up 5 percent or less of the
acreage.
This soil is suitable for clean cultivation. It has been used
mainly for residential and industrial sites. Some areas are
planted to sugarcane, and some of these areas are irrigated.
The small valleys are mainly in native pasture but are occa-
sionally used for subsistence crops. This soil is easily
worked. Slope and erosion hazard are limitations. Manage-
ment practices are needed to prevent deterioration of the
soil. Crops respond well to fertilizer. (Capability unit IIe-3;
not in a woodland group)


Matanzas-Limestone rock land complex, 0 to 5 percent
slopes (MtB).-This complex is in small valleys between the
limestone hills, which extend from Aguadilla to Quebradil-
las. It is made up of Matanzas clay, 2 to 5 percent slopes,
and Limestone rock land. The soil and the land type occur
in such an intricate pattern, and the Matanzas soil in such
small areas, that it is not feasible to map them separately.
Matanzas soil makes up 60 to 70 percent of the acreage, and
Limestone rock land the rest. Limestone rock land consists
of outcrops, stones, and cobblestones of hard limestone.
Included in mapping were small areas of Coto clay.
Areas of this complex are not suitable for clean cultiva-
tion. The use of these areas is restricted to grazing, wood-
land, or wildlife habitat because of the large number of out-
crops, stones, and cobblestones. Some patches are used for
subsistence crops, but they are cultivated by hand. (Not in a
capability unit or woodland group.)



Moca Series
The Moca series consists of deep, moderately well
drained soils that are very strongly acid and moderately
slowly permeable. These soils formed in material weathered
from the San Sebastian Formation. This material consists of
plastic clay, gravel, and cobblestones. The slope ranges
from 5 to 60 percent. The climate is humid. Rainfall
amounts to 80 to 90 inches, and the annual temperature
ranges from 76 to 790 F.


B22-27 a 44 pulgadas, rojo oscuro (2.5YR 3/6); arcilloso; estructura
en bloque subangular d6bil grueso que fracciona a granular
moderadamente fino; consistencia friable, ligeramente pega-
josa, plistica; con pocas raicillas; neutral; limited abrupto ir-
regular.
R-44 a 46 pulgadas, caliza blanca fragmental con caras tefiidas de
rojo oscuro.
El grosor del solum y la profundidad a la roca caliza fragmentaria
varia desde 40 hasta 50 pulgadas. La reacci6n varia desde ligeramente
Acida hasta neutral. El horizonte A tiene matices de 5YR y 2.5YR, val-
or de 3, y cromas de 2, 3 y 4. El horizonte B tiene matices de 2.5YR y
10R, valor de 3, y cromas de 4 hasta 6. Tiene estructura subangular
d6bil que varia desde gruesa hasta median en clase.
Matanzas arcilloso, 2 a 5 porciento de declive (MsB).-
Este suelo esta en faldas y en valles pequefios entire los
montes calizos. Tiene el perfil descrito como representative
de la series. La capacidad de retenci6n de agua es moderada,
y la fertilidad es median. La erosi6n es un peligro.
Se incluyen areas pequefias de Coto arcilloso y de Tana-
ma arcilloso. Estas areas alcanzan al 5 porciento o menos
del cuerdaje.
Este suelo se presta para cosechas de cultivo limpio. Se
ha usado mayormente como sitios para residencias y para
industries. Algunas areas se han sembrado de caiia de az6c-
ar, y algunas areas estan bajo riego. Los valles pequefi-
os estan mayormente en pastos nativos, pero ocasional-
mente se usan para cosechas para el uso de la finca. El suelo
de ficil laboreo. El declive, y el peligro de erosi6n son limi-
taciones. Se requieren practices de manejo para prevenir el
deterioro del suelo. Las cosechas responded bien a la apli-
caci6n de abonos. (Unidad de capacidad IIe-3; No esta en
un grupo de bosques)
Matanza-Tierra roca caliza complejo, 0 a 5 porciento de
declive (MtB).-Este complejo esti en valles pequefios
entire los montes calizos, que se extienden desde Aguadilla
hasta Quebradillas. Esta compuesto por Matanzas arcilloso,
2 a 5 porciento de declive, y Roca Caliza. El suelo y el tipo-
tierra ocurren en un patr6n tan complejo, y el suelo Matan-
zas ocurre en areas tan pequefias, que no es possible separar-
los en el mapa. El suelo Matanzas alcanza de 60 a 70 por-
ciento del cuerdaje, y la roca caliza comprende el resto. La
tierra caliza consiste de afloramientos, piedras y guijarros
de roca caliza dura. Se incluyen areas pequefias de Coto ar-
cilloso.
Las areas de este complejo no se prestan para cosechas
de cultivo limpio. El uso de estas areas esti restrict a pas-
toreo, bosques, y habitat de vida silvestre, debido al gran
ntmero de afloramientos, piedra, y guijarros. Algunas areas
pequefias se usan para cosechas para el uso de la finca, pero
estas se cultivan a marto. (No esta en una unidad de capaci-
dad o en un grupo de bosques)

Serie Moca
La series Moca consiste de suelos profundos, de desague
moderadamente bueno, que son muy fuertemente acidos y
de permeabilidad moderadamente lenta. Estos suelos se han
formado en materials meteorizados de la formaci6n San
SebastiAn. Este material consiste de arcillas plisticas, cas-
cajo, y guijarros. El declive varia desde 5 hasta 60 porcien-
to. El clima es h6medo. La lluvia es de 80 a 90 pulgadas, y la
temperature annual varia desde 76 hasta 790 F.







SOIL SURVEY


In a representative profile the surface layer consists of
dark-brown, extremely acid clay and common, fine and
medium fragments of volcanic rock. This layer is about 6
inches thick. The upper part of the subsoil is red, very
strongly acid, firm, slightly sticky and plastic'clay. The low-
er part, to a depth of about 32 inches, is grayish-brown and
red, very strongly acid, firm, slightly sticky and plastic clay.
The substratum is red, gray, and reddish-yellow, very
strongly acid, slightly sticky and plastic clay.



The less steep areas of these soils have been in sugarcane
for a long time, but the steep areas are in brush, coffee, and
native pasture.
Representative profile of Moca clay, 5 to 12 percent
slopes, eroded, 4.0 kilometers southeast of the town of
Moca, 0.6 kilometer north and 15 meters east of junction of
Highway No. 111 and Highway No. 110.
Ap-0 to 6 inches, brown (7.5YR 4/2) clay; weak, medium, subangular
blocky structure; very hard, firm, slightly sticky and plastic;
small amount of material from BI horizon has been mixed
with material in this horizon; many fine roots; common fine
and medium volcanic rock fragments; extremely acid; clear,
smooth boundary.
Bl-6 to 10 inches, red (7.5R 4/8) clay; common, fine, distinct mottles
of brown (10YR 5/3); weak, medium, subangular blocky
structure; very hard, firm, slightly sticky and plastic; com-
mon fine roots; thin patchy clay films; common krotovinas 2
millimeters in diameter; very strongly acid; clear, smooth
boundary.
B2t-10 to 18 inches, red (7.5R 4/8) and brown (10YR 5/3) clay; mod-
erate, medium, subangular blocky structure; firm, slightly
sticky and plastic; few fine roots; thin discontinuous clay
films; cracks to a depth of 20 inches; organic staining along
root channels; few pressure faces and slickensides; very
strongly acid; gradual, smooth boundary.
B3-18 to 32 inches, grayish-brown (10YR 5/2) and approximately 30
percent red (7.5R 4/8) clay; weak, medium and coarse, suban-
gular blocky structure; firm, slightly sticky and plastic; few
fine roots; thin patchy clay films; organic staining along root
channels; few pressure faces and slickensides; very strongly
acid; abrupt, smooth boundary.
Cl-32 to 48 inches, light-gray (2.5Y 7/2) clay; many, medium, distinct
mottles of red (7.5R 4/8); massive; firm, slightly sticky and
slightly plastic; very strongly acid; abrupt, smooth boundary.
C2-48 to 64 inches, red (7.5R 4/8), light-gray (2.5Y 7/2), and reddish-
yellow (7.5YR 6/8) clay; massive; firm, slightly sticky and
slightly plastic; very strongly acid; gradual, smooth bounda-
ry.
C3-64 to 70 inches +, mottled red and gray clay stratified with vary-
ing amounts of gravel; fracture plains in lenses of gray clay
appear as pressure faces or slickensides and are light gray
(5Y 7/1).
The solum ranges from 27 to 43 inches in thickness. Reaction ranges
from very strongly acid to extremely acid. The A horizon has a hue of
7.5YR and 5YR, a value of 4, and a chroma of 2 to 4. The B horizon
has variable proportions of red, brown, grayish brown and is more
than 15 inches but less than 50 inches thick. The B2t horizon has mod-
erate subangular structure that ranges from medium to coarse in class,
and it has thin clay films that range from patchy to discontinuous. The
C horizon has colors of gray and, in varying proportions, red and red-
dish yellow.
Moca clay, 5 to 12 percent slopes, eroded (MuC2).-This
soil has the profile described as representative of the series.
The available water capacity is high, and fertility is medium.
Erosion is a hazard.
Included in mapping were small areas of Perchas clay and
small areas of soils that have a lighter colored gravelly sur-
face layer. The areas make up 5 percent or less of the
acreage.


En un perfil representative la capa superficial es pardo
oscura, extremadamente acida de textura arcillosa, y con
fragments de roca volcfnica que son comunes, finos y
medianos. Esta capa tiene alrededor de 6 pulgadas de espe-
sor. La parta superior del subsuelo es roja, muy fuerte-
mente icida, firme, levemente pegajosa y plistica, de tex-
tura arcillosa. La parte inferior del subsuelo, hasta una pro-
fundidad de 32 pulgadas, es pardo grisacea y roja, muy
fuertemente acida, firme, ligeramente pegajosa y plistica,
de textura arcillosa. El substrato es rojo, gris, y amarillo ro-
jizo, muy fuertemente icido, ligeramente pegajoso y plisti-
co, de textura arcillosa.
Las areas menos inclinadas de este suelo han estado en
cafia de az6car por largo tiempo, pero las areas inclinadas
estin en brefiales, cafe, y pastos nativos.
Perfil representative de Moca arcilloso, 5 a 12 porciento
de declive, erodado, 4.0 kil6metros al sureste del pueblo de
Moca, 0.6 kil6metros al norte y 15 metros al este de la uni6n
de las carreteras nos. 11l y 110.
Ap-0 a 6 pulgadas, pardo (7.5YR 4/2) arcilloso; estructura en bloque
subangular d6bil median; de consistencia muy dura, fire.
ligeramente pegajosa, plistica; una cantidad pequefia del hor-
isonte B1 estA mezclada con este horizonte: muchas raicillas:
fragments comunes, finos y medianos de roca volcinica:
extrema damente acido; limited claro liso.
Bl-6 a 10 pulgadas, rojo (7.5R 4/8) arcilloso; con manchas comunes
pardas (10YR 5/3) finas y precisas; estructura en bloque
subangular median, de consistencia muy dura, fire, ligera-
mente pegajosa, plistica; raicillas comunes; finas peliculas de
arcillas; krotovinas comunes de 2 milimetros de diimetro;
bien fuertemente icido; limited claro liso.
B2t-10 a 18 pulgadas, rojo (7.5R 4/8) y pardo (10YR 5/3) arcilloso;
estructura en bloque subangular moderadamente median; de
consistencia firme, ligeramente pegajosa, plistica; con pocas
raicillas; con peliculas de arcilla finas y discontinuas: con
grietas hasta de 20 pulgadas; con manchas organicas a lo lar-
go de canales radiculares; con pocos pianos de presi6n y de
resbalamiento; bien fuertemente icido; limited gradual liso.
B3-18 a 32 pulgadas, pardo grisaceo (10YR 5/2) con aproximada-
mente un 30 porciento de rojo (7.5R 4/8) arcilloso: estructura
en bloque subangular d6bil median y gruesa: de consistencia
firme, ligeramente pegajosa, plistica; con pocas raicillas: con
peliculas finas de arcillas; con manchas organicas a lo largo
de canales radiculares: con pocos pianos de presi6n y de res-
balamiento; bien fuertemente acido; limited abrupto liso.
Cl-32 a 48 pulgadas, gris claro (2.5YR 7/2) arcilloso; con manchas
rojas (7.5R 4/8) medianas y precisas; macizo; de consistencia
firme, ligeramente pegajoso, ligeramente politico; bien
fuertemente Acido; limited abrupt liso.
C2-48 a 64 pulgadas, rojo (7.5R 4/8) gris claro (2.5Y 7/2) y amarillo
rojizo (7.5YR 6/8) arcilloso; macizo; consistencia fire, li-
geramente pegajoso y ligeramente plastico; bien fuertemente
acido; limited gradual liso.
C3-64 a 70 pulgadas +, arcilla con manchas rojas y grises, estratifica-
do con cantidades variables de cascajo; los pianos fractura-
dos tienen capas de arcilla gris que parecen pianos de presi6n
o resbalamiento y que son color gris claro (5Y 711).
El solum varia desde 27 hasta 43 pulgadas en espesor. La reacci6n
varia desde bien fuertemente acido hasta extremadamente icido. El
horizonte A tiene matices de 7.5YR y 5YR, valor de 4, y cromas de 2
hasta 4. El horizonte B tiene proporciones variables de rojo, pardo.
pardo grisiceo, y su espesor es de mis de 15 pulgadas, pero menos de
50 pulgadas. El horizonte B2t tiene estructura moderada subangular,
que varia desde median hasta gruesa en clase, y tiene peliculas de ar-
cilla que varian desde en parches hasta descontinuas. El horizonte C
tiene colors grises y en proporciones variables, rojo y amarillo rojizo.
Moca arcilloso, 5 a 12 porciento de declive, erodado (Mu-
C2).-Este suelo tiene el perfil descrito como representative
de la series. La capacidad de retenci6n de humedad es alta, y
la fertilidad es median. La erosi6n es un peligro.
Se incluyen areas pequefias de Perchas arcilloso y areas
pequefias de suelos que tienen una capa superficial casca-
josa y de color claro. Estas areas alcanzan al 5 porciento o
menos del cuerdaje.




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