Batata Doce.

Material Information

Batata Doce.
Series Title:
Correspondence and Subject Files 1921-1943
Rolfs, Peter Henry
Rolfs, Peter Henry
Physical Location:
Subject Files
[7] Batata Doce.


Subjects / Keywords:
Rolfs, Peter Henry
Agriculture -- Study and teaching -- Brazil -- Minas Gerais.
Sweet potato industry -- Brazil.
Escola Superior de Agricultura e Veterinaria do Estado de Minas Gerais.

Record Information

Source Institution:
University of Florida
Holding Location:
University of Florida Archives
Rights Management:
Copyright Board of Trustees of the University of Florida
Resource Identifier:

Full Text


Dr. P. H. Rolfs, ]
Escola Superior de Agricul-
do Estado de Mina:

The sw:eet potato has been in cultiv':tiol

at wild species is its pak'ent. Evun the q

?st cultivated in Asia or in America is in

It is susceptible of cultiv..Lion in all

ons, eswe2ially where there is an alternate

the e-.tre.L.ely rainy rej ions of tlhe tropic

Dle and valueless. Nearly all of -rasil,

more or less well .ada-ted to its culture.

illy in the states of Minas Geraes a.d .Sl.o

iditions are ideal. The v;':r.. rainy season

'erantly, then follows the dry *cool seasc

to' "he development pf the tubers,

In this article no attempt is made to ,7

e s-;eet potato, but one phase only, i. e.

lered. Those wvho wish to study the sweet

r be referred to "Cultura da Batata Doce n

propagation. One should not expect to i

five thousand or mnoire of these seedlingE

way most of the best varieties have beer

potatoes has been collected in nearly a]

in this way,

In Brasil, there are proba

sweet potatoes; no one of which is o/XM

reZions. So far there appears to be no

with s-:.'eet potatoes. having'been conduct

ten years or more, in this country. It

sweet potatoes grow so easily, that exlpe

attention to fuore difficult problems. T

toes produced is enormous.

The amount of human labor

lost by cultivating inferior varieties a

methods is incomrrrehensibly l-'.rge. The

the direction of the ordinary foreman :;a

percent of the time employed in producin

attempt is made to state clearly the var

roving sv'eet potatoes by an improved me


of seventeen or eighteen per hour, while a

In other words, it cost 4iore than five tim

work by employing inefficient labor.)

Due to the fact that so muc]
bhe breeding of sweet potatoes im North Am

aerchantable tubers produced there are so

Ally obtained in Brasil, Mr. C. T. Tooraen

introducedd two varieties from -ousianna.

;wo dozen vine cuttings of each variety.

.ng garden for preliminary testing. Both

.o the climatic and soil conditions of the

Vinehand Bush", one of the varieties, bece

,he other variety "Yellow Yam" became Eg

This is the first year (1924,

een tested at the -scola on a sufficiently

o say with any degree of assurance what yJ

ive. Each of the two varieties was plantE


Two tubers, each weighbfing

weet potatoes, were obtained at the Lavras


Table of Tields.

T'Itio i

lots; the strong, large mudas (15 or more

in Plot VIII:O, while the weaker, smaller

Length) were planted in VIII:I. The weake

3nmployed for planting out, were discarded.

auction of Plot VIII:O shows that one shou

of the small mudas, and plan only the more

bo VIII:7, inclusive, were planted to vine

centimeters long.

Plots VIII:O to 7 were plan

3 were planted on Feb. 1st, making a diffe

planting. The result of this difference is

production of the plots planted later.

Variety NQ 16. (See photographs

bo 9, inclusive, were planted on Je5. 24th

3d to draws taken from beds in the usual w

sd with the larger grade draws, while Plot

averaged fifteen centimeters long. A glan

was a very appreciable drop in the quantity

Plot IX:2, and a very decided increase in

produced in it. Plots IX:3 to 9, inclusive

planted out at an earlier date, and was a

1N 14 (Plots IX:8 and 9) planted out on F

Varieties Ngs 14 and 16 we:

nation whatever, while NQ 181 received ro

of about six tons per hectare.

Each of the plots planted

four hundredths hectare, and was planted

square meter.) The average yield of the

sive) of variety NQ 14 was 153.3. kilos,

(1,216 2/3 arrobas) per hectare. At presto

selling at wholesale in Vigosa fol 35000 3

have the money value of 3:650$000 per heel

non-merchantable potatoes, we were much me

the growers of sweet potatoes here.
The seven plots (IX:3 to 9

16, planted to vine cuttings yielded an as

rate of 7,559.5 kilos (503.9 arrobas) per

of 3$000 per arroba these would kaz yiel<
NQ 181, the Lavras variety


of gathering per arroba is sensibly le

when there is a small one.

..'hen no fertilizer is u

NQs 14 a-id 16, 500000 per hectare shol

cost of production, by the methods her

rmuch of the work himsIlf, and hires he'

the cash outlay for labor will be cons.

Large Yieldj

On July 5, 1923, vine ci

were planted in Plots 11:3 and 4 (Expe:

"seed" vines for the 1924 experiment.

Jan. 10th and again on Feb. 1". From 1

plants were dug and the production of I

iLay 24" four hills were dug, giving as

the average of commercial tubers vas or

of very large ones. On I ay 28" one hi]

kilos of tubers. On Jure 28" ten hillE

of 3.3 kilos per pl-int. On that date 1

plant was 5.2 kilos. A knowledge of 1

commercial tubers, is much better than NQ

less attention from plant breeders, and th

181, which has not received any attention

has been selected on account of its genero

er should refer to the Table of Yields and

tioq of culls and small tubers produced b

Preparation of the Soi

Any good, high, well drain

for a sweet potato field. It should be su

water will never stand in the field. Ther

3f hectares of this kind of land lying idl

Unnecessary to employ the more difficult 1

During the dry season precee

should be thoroly grubbed to free it from

and rocks, to make it practicable and easy

It is better, tho not absol

crop has been grown on the field the prece

the rainy season, as soon as the soil is s

plow to turn it well, the land should be t

twentv centimeters. This can be readily d

l-rge scale, say of five to twelve hect

economical to use a riding disc cultiva

'liho to plant a sinaller area, one t

cultivator dravrn by one animal will prc

(See photograph. iQ 5, which illmstrateE

tes the method of plantingC.).

In laying off the rovws,

of soil about thirty centimeters vide,

which the pla ts are to be set, be left

not already firm, a roller or other ins

used. Of course it should not be pace

I.Q 5 is then used to throw soft soil fr

center, to a height of about 20 cantimn

central strip must not be disregarded,

is softened with'a cultivator, the root

earth, snd nany lonqslim tubers will r

plant may produce a few extre..e ly larZe

large ones in themselves are no seriou.z

much larger percent of the crop will be

from bursting than in the case of the s

- .V-

However, vine cuttings of twenty to thj

quickly planted and produce an abun.aric

shorter ones. It should be re;:epiubeied

plant that assimilate the sunshine and

than 30 centimeters in length are more

die and are more likely to wilt after I

By referring to photogral

roots which produce tubers originate fi

therefore, in sweet potato planting, wl

tiat as l-r-e a number of nodes as prac

In sc;;ie of the hills examined it was fc

h~. producedd one or more tubers. In a

tubers were -:,rcduced from a $Aj single

tlethod of Plai

The most convenient way

the "seed bed". T7hen several thousand I

they may be transferred to the field tl

pleet potatoes on a large scale prefer

ing.; that is, to leave them for one to

However, as planting after curing and .

across the ridge, so that the middle of

thrown-up mound. (See Photograph NQ 2)

A second laborer then fo

eighty centimeters long, three or four

centimeter thick. The stick should hav

injure the vine when it is thrust into

attention from the leader of the men wi'

vines-, especially the succulent ones, a

are thrust into the ground. The middle

pushed into the ground some eight or tea

leaving the last two buds on each end a

the planting is done on a large scale,

the stick at the proper distance from t

can easily know when the vine has been

vines have been cut shorter, they will

Immediately after the vi

soil, (as illustrated in photograph NQ

be used so that the soil will come in c

10th of Jan. (1925) we planted two thou

14 by.the method described, without loo


Months or more should be set out earl:

and 181, fro-'i the first to the middle

The ridges for planting

pared only vhern the soil is in excellc

ly to occur any ti":ne after the first (

tude of Vigosa. 1"o animal or plow shc

when it is v.:et enough to padci. If th(

the plants -_,:y bec set out as soon as t

if more convenient the planting may be

been pre :r'ed before hind the plants

wet to permit a plow on it.

When the vines ire set

a rain follows ii-r.iediately after the i

and the farmer saves about one third c

one has a large area to plant it is in

lilk r:.ise impossible to set all the pla

after one. Hence the watering should

this system.


j&O +11_ a-t i 0 c3r + Y r4nf eCf z i

I -

At the beginning of the

are too long, the final cultivation she

thrown up as high as the instrument wi:

the vines begin to meet between the roi

light implement, such as a fourteen toi

in order to ekthe formation of roo,

plants will exhaust their energy in pr(
bers at the nodes rather than in produce

With the vines of variety NQ 14, it wi:

the cultivator only once for the purp(

ing along their extention; with lQs 16

sary to do this several times. If a nt

vines have begun to "run" this operatic


If planted during the f.

will be ready for digging by the first

will have become thoroly mature and i

If the winter happens to be dry no harry

left in the soil until the middle of At

ber. The time for digging can be chost



example, a "Blue bird", will do the wo:

or a hill side plow is not satisfactory;

handle and injure many of the tubers, i

will bar off the rows, leaving most of

the photograph, injuring practically ni

Gatheri n

It is best to bar off ai

photograph NQ 7.) After these have be<

be treated similarly. Digging the pota

rapid, but has the additional advantage

in that almost none of the tubers are

at the Escola, with laborers who had ne

than one half of one percent of the tul
of digging
hoe nethod.anywhere up to fifty percent

In gathering, one labor(

goes down the row which has been barre(

out all the tubers (see photograph NQ I

will need a light, broad grub hoe. If 1

toothed spade (potato fork) is the b4

are the best size. If smaller ones ar

likely to become careless in handling

will require two laborers for handling

carry the commercial tubers directly t,

near the laborers. This avoids a secoa

times it will be advantageous to colle,

piles of ten to twenty arrobas, and le<

days to cure. (See photographs '79s l,

time all that are in a bad state of pri

Constant vigilance must

otherwise they will become careless an(

many of the tubers. All small Jkame,]

may be placed in piles and finally use(

poultry and horses.


Sweet potatoes gathered

cured in the field may be stored for a

warm, dry place. Irish potatoes, on tl

The nroner condition for sweet potato(


-I A-

a space of twenty entimeters between

form below, and the slats of the platf

may then be filled with potatoes.

During the night and me

the sweet potato storage house must be

out the cold and moisture. When the d

dows should be opened to give an abund

away the moisture exhaled by the tubei

In those localities whe

below 25 degrees Centigrade and during

humid it may be necessary to raise the

phere by means of a fire.

Then the tubers are pla

must be made to reject all buniised and

sweet potato gives off more moisture t

certain to disseminate a large quantit


One of the obstacles tc

tended scale is that of obtaining an a

care. ior, WILL produce enough "seed"

Another and less expens

in exacctly the same way as for planting,

vines may be spaced much more closely,

the ridge. If these are/ planted in Ji

will yield an abundance of cuttings to

even a third watering may be necessary

and cool.

*f Draws Vs. 1

Those who plant sweet p;

erally believe that draws taken direct'

vine cuttings. This fallacy uwas quite

ica until scores of experiments showed

same size are equally productive when i

to test this point under our conditions

the sweet potato experiment. The follow


Variety 1IQ 14. Plots VII

draws, gave an average of 143.5 kilos

sive, which were planted to vine cuttir

-J. I-

-, p-

IX:3-9, inclusive, were planted to vine

of variety NQ 16 was'planted on the samE

were necessarily the same. The average

of Plots )W4/ IX:0-2, inclusive, those

Th.t of Plots IX:3-9, inclusive, planted

This average saain shows so:.le advantage

But here at-ai n we find that there is r.oi

plots planted in ti-Le same manner than be

ently planted sections.

The Table of Yields brings

that is, that weal: dravs (see yields of

less than 15 cms. long should never be u

much smaller, and a porportionately infe

other vwords, draws will yield a Lood. cro

vigorous ones, twenty or more centimeter

Area to Plant p

The production of sweet p

amount of dAirirg o ijriods, i. e., dur

the land is prepared and the plants set

thousand vine cuttings in a day. Some o;

out very successfully by boys and e n

found more economical to employ trustwor

one man cutting the vines can supply two

ing, it will be been that matters can be

four laborers can readily plant out a te

it in another was, one foreman with four

in ten days, or less. An able foreman w

better than the estimate placed above.

On many farms in NIorth Ami

planted on an extensive scale, an especi

two mules ii sed for doing the planting.

two boys will plant two to two and a hal

opens the hole/ for planting the vine 0a

at the right place, and then closes the

the set. As the man and boys ride on the

little fatigue. (This same machine is us

more than fifty percent of the sweet pot

by the method indicated in the foregoing

In our experiment field t

supposed to care for and bring top r,itu:

of swe7it pot .:toes with a team of mules

1i.,.lcrn-t desi-ned for digging sweet -.i

needed and the services of one may

ITeed ITot Fear Ovw

The local trade will ab-

a considerable nLuZIl.,Cr of years in the j

occur as the production of an over sup;

tatoes lend themselves splendidly to e2

could be very profitably exported.. The

other.v,ise infit for shipping can be mac

is eoual to mandioca flour.

-'11l culls and excess s.t(

ably used on the fazenda. Hogs ray be

one sl.ould remember that sweet :;;otatoeE

amount of-carbohydrate and an insufficJ

ex-erimernts have shovn -that as a mill-l

of the carbohydrate from the sweet pots

drate from aiandioca or other sources.


In North America hundred

served in tinp, cooked, and ready to be

ported and sold in this form. Hundreds

placed in sweet, potato storage houses t

time of the year when they bring the be

Twenty or more years ago, when only a f

grown, there was a great overproduction

eastern United States. Thousands ok hec

alone. In more recent years the variety

market systematized so that now, with a

the market is demanding more than are p.

with the systematizing of the marketing

varieties, the export trade has increase

demand for sweet potatoes greatly excee,


1. The sweet potato is one of

of the tropical World. It is about twi,

Potato. There is practically no waste,

hogs, horses, and poultry will consume

handsome profit, he himself must organic

man, it is xpa likely to fail.

6. Thousands of hectares of 1

that might be producing valuable food at

is so expensive.


inclusive. EJgty-four hundreddths hectta
a JA
to right and VJII:l- 3,.5, 7, ,to left,

s4zed and injured tubers. VIII:4 and 8

utIersized tubers was very small. No fej

N 2. Crop cT -?a e LQ. 16, I
AAtea of plots, eighty four mxa hundredtlih

and right', and from IX:1, 3, :, 7, 5

of small ones as well as over sized and -t

1TN 3. Sweet Potato' 2zamxtki Q I18

sanrths hectare. Average producticn'sliE

than 2/3 that of IQ 14. Note 'larger prol

middle pile, as well as large proportion

contains Wan; long nnd misshapen tubers.

liters rotted coffee hulls per hectare.

Y. 4. Three best hills selected fro

'large number of commertial.tubers and the

(n.axAx result of 2) years of breeding),

per hill. The total yield is much smaL.le

IQ- 181 average smaller than NQ 16 but pro

N1Q 1A. Thn i-,rnnnrT inn n 7- 1 n r t-rrna r. m ii o c-

off 'rowe, A. I 1tertnat'o_ BI ft ion

-A C ow red off- on oth sides exposing

ers in di6 tanc'e gathering.

N 9. xping the tubers I ft in th

off btth s ides. Lab ore sf with bakets in

9. A Aood '2-ar roba basket filled

A fi- a selection. The basket should be r
s e, eg 2th n d a fi _u goaod hold for- the ;h-

** -***A t
44 p

""' ~ l~ 1s" ""i x "": c "' a ^ 'i" "^-^ ."'"" "" "*"






P. H. Rolfs, Dire
Escola Superior do Agricultu
do Estsdo de Minas Gez

A cultural da batata doce

.noerto detormimnr a especie selvagem de

im disoussao si sua cultural foi primeira

Pode ser cultivada em tod

-ropicaes, especialmente onde ha alterna

de secca. Nai regioes excessivamente

Siiznpratic.vel. Q.uasi todo Brasil, espe

iaiz, n mais ou menos ppoprio para a caul

'egioes, principalmente nos estados de N

Lig0es do solo e olimc, sao ideas. A as

cresciriento exhberante da riaa; segue-

iuito faworavel para o desenvolvimento d

Late artigo nao constitute

ethodo consisted eme rm so obter ementes, ge

uidado as plants ate que produzam tube rcu

s tuberoulos que prometterem melhor geraga

* deve esperar obter mais do que uma plant

ntre cinco roll ou maiL obtidas de smentes

ido as melhores variedades. Sementes de

e quasi todos os paizes tropicaes, para oe

elo method acima descripto.

I1o Brasil, ha provavelmente,

Sbatata doce; nenluma dellas, entretanto,

Ddas as regijes do paiz. Nio tem sido ain

* experimentaqoes feitas no paiz e realize

nnos aeguidos. Isto e devido, provavelmen

cultural da batata doce que os experi-nta

problems mas difficel., E' entretanto,

iltata does no paiz.

A quantidae de esforgo hum

egocio que sao perdidos pela cultural de va

a methodos laboriosos e antiquados 4 tamb

a geral os upregados das fazendas, trab&a
** .. .. .. -^ _..

A am w ,a 'WA ,, lf. JUib~riJ A,, w.latV,1, 14 L.-B ,, ,JO i

um dos noBsos rapazes, ganhando a metai

pedagos de rama na proporgao do 17 a 1U

- de 200 a o00 no mesmo tempo'. Despender

o tempo o dinheiro necessarios, empreg,

Devido ao facto do ser

batata doce nos Lstados Unidos, send i

tuberculos commerciaes muito superior i

T. Tooraen, de Anna Florenoia (Minas G(

vindas do Estado do Iouisinna. Ella b(

duzias do pedagos de rania, de cada urn

no nosso campo de propagaao de plantaa

Ficou provado serem ambas variedades b<

o clima da Zona da 'Tatta de blinas Gera

"Vineland Bush", recebeu no nosso camp(

a "Yellow Yam", tornou-se "NQ 16.4

Este anno (1924) e o pr

Sforam experimeninadqB c larga escala ne

informar corn segurangal a quantidade dE

-% sirao. Ambas foram plantadas ei areas

do hectare.

0 quadro seguinte da a produ
6 14 (Vineland Bush); NQ 16, (Yellow Yarm)

hiotographias 1, 2, 3, 4.

Quadro de Producgao (

Batatas Mu
commnerciaes pe
Nm 14, VIII:O 158

:1 129
:2 140

3 144
:4 162

:5 157

:6 160
:7 151

:8 90

:9 90

No 16, Ix :0 63

:1 60

Variedade 19 14, IVer a photo
rXII:O e VIII:1 foam plantadas em 10 de

iudas obtidas de tuberculo plantados pt

Regular. As mudas foram divididas em dt

racas e menores (de 10 a 15 oms. do alt

.s mudas mais fracas nao foram plantadae

ieguida. A produogao sensivelmente maiox

.espresar grande quantidade de muda fra

,s leiras de VIII:2 a VIII:7, inclusive,

aedagos de vinte cinco a trinta centimet

rIIl:8 e 9, foram plantadas no dia 1 d

ios 21 dias de lifferenga. 0 resultado

lo decrescimo de producgao das leiras pl

Variedade T1o 16. (Ver photogr

.e IX:D, 1, e 2, receberam mudas, obtida

ommum; sendo plantadas as melhores nas

.enores que 15 centimetros na IX:2. 0 q
iminuigao na qantidade de batatas com

roporg o de batatas pequenas i maior.

(Leiras 2:8 e 9),

14 e NO 16 foram OU

caf4, curtida, na p


16 continha 84 cent

por metro quadrado)

inclusive), da vari

arrobas) por hectar

Vigosa, o prepo de

colheita por hectar

cornmerciaes, fonos.

productores desta Z

As s

plantadas de rama,

kilos (503,9 arrob

producgao em dinhei

No 1

comparada com Ngs 1

ilantadas no dia 1 de

ttivadas see aduba9ao

,oporgao de seis mil


uma das leiras plant;

simos do hectare, sei

A colheita media di

dade No 14, foi 153,#

, Acutalmente (Agos

"-00 por arroba, nas

eleva-se a 3:6$00o30

tito mais rigorososs


te leiras (IX:3 a 9,

eram a producao med:

s) por hectare. Ao ]

o 4 de 1:511i700 por

1, a variedade de Lal

e 16, porque a leir,

empregando mais trab

o despendio com moi

No diL

15 oms. de comprime n

experimental), a fim

os08 de ra foram de:

Alguma vezes depois

e producao de tubers

foram arrancados, daI

tuberculos coimercia<

de batatas muito grain

zido mais de 7 kilos

pes, dando produogao

por m u unico pi, foi

produzir tao enormesi

desejam plantar a bar

car farina. Para ti

for a estagao normal

0roprLO Iazenaeiro 112

Lhadores somente na c

a obra, sera entao cc

Grandes Colheite

25 de Julho de 1923,

3 foi plantada na5t2,

ie produzir ram. pare

las extrahidas em 10

la ultima data foram

alos determinada por

Io u p oroduogao ued

i foi srnmente de 2,2

les. Em 28 do io u

lo batatas. lEm Junhc

aedia de 3,3 kilos. 1

le 5,2 kilos, 0 conk

colheitas e especial

ita doce, corn o fim d

r born resultado comr

ante secca, e necessa

plants. A mesa variedade I muito mell

cuidada com o fim de produzir tuberculo

considerada a sua qualidade de grande (

a quadro de produtao, e as photographic

n-na producgo de tuberculos defeituosos

dades experimentadas.

Preparagao do Solo.

ualquer va'rgem fertil,
hida para cultural da batata dooe. 0 te3

clente de modo a nRo ficar agua empossac

centenas de milhares de hectares de ter

que n o ao approveitados aem ina, nao

-+08 terrenos de cultivo maiddifficil, A
Durante a estagao secoa (

deve ser destocada, lipa de pequenos tc

que difficultam o uso de machir.s modern?

lutaente necessario que outra cultural 1

antewedents. N o comego da chui

sufficientemente molle, deve ser revolve

de vinte centimetros. Esta operaao pot


-tQuando a cultural feito em larga esoc

muito mais economic o emprego dum cult.

e corn boleia. Sendo pequena a cultural,

vador "Pl.~Anet Junior" puxado por um anir

photograhia No 5' que mostra duas leirn

Quando se formam as leiras, 4 muito impc

fiquem trinta centimetros, de terreno be

os centrcs daB bases das leiras, na 1l.r

aciia, 4 necessario firmal-os, usando-se

instruiento que produza o mesmo effaito.

NB 5 d entao usado pmira puxar o solo doe

sobre os trinta centimetros firmes de te

se a vinte oentimetros, Jesejando-se ob

deixar de fazer o endurecimento daj base

for endurecido as raises penetrarao prof

dos muitoa tuberculos fines e compridos,

sivamente grande, N Brasil, os tubercu

desvantagem para o meroado, somente gnan

pelos insectoe ou damnificada no arranca
mnnnna nl iin tan a ana nraii4ana -talvnI

m pe&agos de intle a trinta ems. 6 mrheor

atilmente e a produagco de folhas 4 mais r

onsidera que so as folhas da batata que

roduzem os tuberculos. A rama comn mai de

Iouldade para operagoes manuaes e 4 mais s

A photographia NO 4 nmostra q

alos nYoem dos nds. E' portanto important

oce, R seja feita de pedagos de ranm ou

jamn colloeados dentro do ddlo. Nalguns p

ie cada nr enterrado pxroduitu uta ou mais t,

iatro tuberculos originaram-se de au n6 Un


0 modo mais convenient 4 cor

a tirada do canttro, e no memo local. D1

i pedagos de rama, com o taanho necessary

i que vao ser plantados. Alguns cultorea d4

oeferem deixar on pedagos de raa murahar

iiam-nos por um a dois dias num local som

i que oz resultados sao identicos, quer os
mniia A mrnithnn in immi i i t.n-m a t.n dAormnn


o meio da rama sobre o meio da leira. (

Um segundo trabalhador a

pedaco de taboa corn o comprirmento de se

de largura e pelo menos un centimetro d

+-devem eer arredondadas, a fim de nao -.e

quando sat. introduzidos dentra dCa terra

que os pedayos de rama nao sejarm feridc

- pleantio, especaoialmente o3 mais vigosos.

oer mettida dentro do solo corca de oit

YO 5,), deixando-se as duas borbulhas c

ficie do solo. 0i a plvnta.:"So eam irz

fLazer-se um signal na e,,taca de plantax

dor lquando a rama attinge a profundidad

tamanho, dove ser enterrada raais Buperf

linmediatapente depois de

rpm.a, devem eer levemente irrigadoe, al

+com as plantae, En 10 de 0aneiro de IS

p edagos de rama da vi.riedade NQ 14 sem

dia 24 do mesmrao rez e anno plantanmos mJ
IV.Q I r Ain manrin mnuin Re nomenta sete moz

* s'imni.ros quinza diacs de J-.aeiro scu axe

Au leirav p-ra a0 pL.:a.tio CiL

reparadvz-., qumTdo o solo e3tiver em boas coa

om a n.titide a lon3aitudo de Vinosa, o wSjl

ondiyes era r;ualquur tazL'oi dapcis de 19 de deve panetrarr no ca -Lo u0:uando oativer

es,.siadonente cOL.L;'i i..lido. .i o terreno as

lanrcio ..ode n o~ i'oito lucki domciti doe '-.-eapa

onveniente, o Lr ntio ,.Lide ner Ceito Irais

ido pirepaaradas c :.,t antOacdanoia, ao plc..tic,

stivtr Aei.asiaLl;rzient. haLnido nrra uir trab

rcndo D pl-'?.ntio feito izmidi

I aposa o ol; nl.tii; cover, torna-se aesneces

airos economtalsanmd/ cerfca de urm targo do

ivendo gramne area .ra iser pl :ntada, e iLZ

do meear modo nm^o ser'. ; aivel fazer-se

nm que as liiras se torne:-: n.uito aeccas de

rrigccG deve ;e8: oonoid-..rada wu- !lArta


io comevo ao ;iro se5 o e a8
M da, deve aee) f clita o u tio ultivo.

Saltoa qlaato ;uiem eaor od ietr ,ntd
sira, aflm dot eva a f a ~ae i
Bt, as p~lant8s Conawni enorgia e rm aw

kborculos ooxrnraiaes. Corn a Va-*edn4e `5

L oltte n pt sar o culttidor -nte w r:

ramxa er:ie todo etensa. C. as e

i n anca de 0iu a, depoinO nc ram eo ni

ai~ ioddo- t14 e At, t -t te

d o h dti oe$a ao A atubcv"aoI

a fi v4A o ;orego 4e 'Otormbro. A epooa a

iAto bemrn Um arado corn a estructura Ade rad

I fo .a. Ira uso nas encostas dos morrow ri5osM

.nejo dlfficll, e deamnificaLm muitos tubercu

cavaa as lelres, deixando exposta a nma ior

mra photogrtphias, semr c-.usar damno a nen

Colho ita

t; melhor excavar e collier le

*aohla IO 7,)# Dofloos de colhide a primoli

irc colhldn, do r;tdmo r:nodo. Excavando-se as

nrente nmas rapido, ano ha Alinda a vnntagen

i:;rerldo torque quasi nenlium tuberculo 4 d-.

S'tscolon, corn trabrl.hadoreo que nunon tinha

ia ser de menos de 1I/2 as tuborculos d:cian

'thodo de narrrnmcarnto nor letio da onxnda,

A. 50 fioa inrejudioada.
7Tn colleita, um trabatlhador c

,9sB pelas letras i;ue forma, excavadae e axt

:ajih-! 9 0.) };i1 o terreno estiver multo du

i enr.dao penueno; etnando molle e friavel,

ilta pnarn a colholta das btttaae i o in~tru

sujaitos a nao tomaran muito ouldado qi

-+cahelo, Costos ,maioree exigirgo dots

0 modo Li- economiao 4 transportaremi-i

direot.~ante pi)ra unw co rroga. que e s

b'lhadoree. asim evita-se c tornar -i

-A-ha vTaagem m s -e depaeeitar as batatas

-o-.rrobaa, durrintc oltuns dias para quoe

gra -hiias 1, 2, e 3,) ro 'i'imaeite termpi

ci c .ava,Zao .-dem uejr prioaptamente reji

Snaceassrio ser exerce

trab. tiadore usema o cue elles se torn

cam doutrc modo, r:uitoe do- tub'roulos,

grandee de qu]. cidade inferior a n., moni

alnlantao4 do vacas Leiteirae, prrooa


A batata dote colhida di

Sdurecisa no ca..po, pods ser trnzomnada

e .ecco, A batata inglezs, so contrary

As condi'oee prvpriase 1.ara a b:-t'ta doc
nnm-rn nro.n cnann a ham wrai *4 1 la n Ars


tiver cheia,. uta sen poe ser conatrui
espago de vinte centimtros entire a upe
tileira slup 1srior. e-e em seguida a

D urte a nlite a me~a a p
ram er co~e das cidado ente focda

rtau ara e fazer ventilagao abundante,
Adade e>xhatada peloo tuberculos a aqueoel
ria locaidades em que a temp
Ite otnoo gross oentigradoe e qumdo # ab:
ra, pode ser necessaro aquecor e scar
ad oraga depositar a
i ou6dadosa eooUha deve ser felta, e reje

ridoe e prfeitoe. IU batata doce am p
iade do q~ a du a de batatas as, e

geirmen que produzem podridao.

roduo o de da
Um doa obstaculos para cultur,

laa, 4 a obtengo d ama, para o p)nt.O
ter ou do tuberoulos Dlantdo ou ~nr ,Lan


Um outow o mrnus dee

de r, xa.tamte do ixso o do

tuando-se Oelnte o efastwento do6 jd

unto vinte e ieco c.iimettros o

duse toe metros doe leira prdus rg ~

heotare m J,-nero, 0tezo etando nor

nloese&rio sOr eita irrig o E dua

ia dse Tuba

On oultoree da ttA dC

acredit quoe as Lmda ti direotwz

Srazl a i0ad em peda90, Aeta sUPPO

-b erota nV _stad(, Utnido atel quCoga a

que r ou us o iualrg n produce

cul r. Apozar diotoc, pa- ip)romr e.t

recultado dea ex.srimentaAEo.

Yari de d 0a 14, s loiras YIXI:O

de a i4ita de 14 i, l k pilo p Wr

form plotadau de rw-a, no swo dia,

a 1-odue dia de I,-,. kilos. si i

Lesmo dia, e todas as condi-oeea p-vseicau e.x

ledta do tub -roulos co;..-uaerciaes d-a lelria

or'a .ai :il:uttad.. de d.udas, foi de 6 kilos.

il'ntado.s de ramnr# deram ,roctuc g...o media

ram outrr~ ves aei superior a e -.iadia da plan

am ta-ibein nested c:.eo, obseva-mus hiver i

Inrttcdio do ?ie:.iAo :iodo, do lue untr e .,1. -.c

e nofildo dirl'ercnte.

Sc qu adro do .'i-oduc.o de:ionr

-imces (Ver- :w leiras VII:2, e IX:2) e as n

ornririnunto nunca dev.7I L;edv prntadaoa pgO

it rior. zcduz-se jo'ts, ue CpS MEsICLL -c-

ie 3Be-,;-l.iL fcrteD*, viorosad, e vfio-Les rile

Area que umn H!onem Pods 0

A -produoc;ao de batata doca r

a servlgo durante o period do ,ireparo do

urm-te Deiembro e S.neiro, e em Junlio 'tA

eita. Os matlzoclos eBLUeridos neste trab 1I

bra ao minimo* As aEohltnas acui indicadas


ser feito o trabalho potr hon cttivo

Gog81d ra4o-se qua u ]

quatro tviba iaLtdoe pode pb ntar nm

Ou cio heris plataro ra z das ,

bbl1 oom bom tra badors pode* plai

a eqtimtiva qU f ma.

Srzaa azenid nos J

4-cultura da b tata doteem asoaa atemn
espeoialmete eon trulda parar o plntI

tal exp1fa, flom h e dois rapazes pt

hetars por dia. A c" abre si

rama, di oir no logar proprii

rapazes tenhwn oollooao as plmta,

noia da miehirm !azem c trab ho se

para pl ao o fi o.) 1lio ob.taU

acim desoripta, matae do% plantio da

pelo mo iodo inidoado tecedcnt te t

S so A oo o de ex,.erj

xcoavam, oo e lssifiap@ a liel t

. for do a mq1ha prniprlta ar n ai

sa anmaos e se pode despoansar trabAlho

No ce Deve Tomi

0 ommerco local consumi 1
vermos, durante nuwro onstderavel do ant

Sque as necesiddes db omrio local,

do priducto a er jportao. Grade qt

m multo luaro. 05 rJsitoe, oue u o se pz

r usados va a fabr*gOgo de farishar quc

O tuborulos imroprios p r~

de ser .convenient E* a luorat Vamento c

dar ao p ros rpd btnt.ta dooe que come

tata doce, asis m oomIio o .rtiho, contem gra
r buone insuffcente porgao de prtei na

o~ado, que para ,roduc~o de letter, com

idAde de hydrate de oarbono da btatt don

trbon de zadioa de ouros fontes.

odu~o do lette, pod; a ns~umir co result
los de ,tata doce por dia, depoLt do esta
farina da b-tati doce 4 rxatlaante igua

docua sao onQse vados atas, os ida
servida I As latas s8o tran8po

uCentna de -Ab.h eos do toneladas de ba
mrte e arzen ropriu n re oervadas

lotadoas do etraEta ce ferro, m epoeng

de heotare s er*a, prod tdos ezomte p.r

armos male recea tea, porkm, aa va ied-d
o mercado systematiado co-o e actua

de modo phantattioo a area da oulttra,

do qc a pr~uog.o, m outr~s alavra

e* a parongem daes vreidades o;a comr

i creomnto quo a procura ecde em uit(

1). A bata ao doe 4 doe malores ]

tropi cal. Ju poder nutritive duas vT
o ha ~r~patiamente desterdicio; o (e

ij.) 0 f.azeid.lairo u beerid-i t-c t-- ,;.- .;

'*-g ni-.a.r o tra-, lho. ..:t-, i s Juj ito .. U-.


6.) !-Tilhires dt ;.3ct-!aeo de te-rn qusa w

dicr..m producer F. -"nide ba;rticti-dl desta mij

e ilov.:dos o;.: ~:.r-eos du. cuu;oc0a de p6 i'i'ui

'.auzido ,,.lo '_- .r C. *L:Llc a i ':, a.


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