Sugarcane variety P.O.J. 2878 in Puerto Rico

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Material Information

Title:
Sugarcane variety P.O.J. 2878 in Puerto Rico
Series Title:
Bulletin / Porto Rico Agricultural Experiment Station ;
Physical Description:
45 p. : ill. ; 24 cm.
Language:
English
Creator:
Davis, R. L ( Robert Lesley ), 1929-
Publisher:
Puerto Rico Agricultural Experiment Station
Place of Publication:
Mayagüez, P.R
Publication Date:

Subjects

Subjects / Keywords:
Sugarcane -- Varieties -- Puerto Rico   ( lcsh )
Genre:
government publication (state, provincial, terriorial, dependent)   ( marcgt )
bibliography   ( marcgt )
non-fiction   ( marcgt )

Notes

Bibliography:
Includes bibliographical references.
Statement of Responsibility:
by Robert L. Davis.
General Note:
Caption title.

Record Information

Source Institution:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
aleph - 029613902
oclc - 21270151
Classification:
lcc - S181 .E2 no.35
System ID:
AA00014655:00001


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or inlsol n b tesnl-ye-ehd h
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ou ihn2yTsatrisinrdcin h rao hc
grownhad ben etende to evera thosand'cres
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PIsuas L-T IgcaI portion of half-ae plate of
and P.AL2. on the right. months did.
and mekes the more rapid growth through the p .
taoer than Pj. P272. Photgrap member 5N
d i tr ct .-* ...**:, ., ..i,
: ."- ,.w
The data on the first three variety trial. mbu
published by the Insular Experiment Staiqs ..A

EXPERIMENTAL MN*ODS

All sugar yields were calculated by means !
Geerligs formula, modified at each ceatal aco
'Acknowledgnent is made to the )ursma zf anWy GdOkobs
and the Insular Experiment Station for pnlAelon to aipil E P
Chemistry and Soilsidentifled the soil types of a 0 h i L
the soil aeries an not given as they have not -be
SThe Masyagueu station acknowledge with ppai taqilk
Station which supplied the data of the FMili An O pedmt
Cabres, of Central Colaso- Ra Bermuda, OU
Waldemar Riff, of Rumssell Co.; A. J. 8SS
dino Ramire. of Central ,Iualdd, Msd
Central CaOnin; Marceo 3. Obe, o1 CetraAA.*CR
aneks; Antonio Roig, of Humacao; 0. M. G0flf
P. Meads, of Central Flasoula
... .44 -,fin'k'" ''

.......
: ... .!i : ..... !!::!liP... ..
.. ..... .... iid i
.. .. ...'.. ... ... ..

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7

'-VA302TT P.O.J. 2879 IN YULORTO: RICO,

d -Spencer's" table: for available wugars. was
Venn't Fajardo the: following formula was used:

ield [nlormsl suerose (normal Brix X 0.32)] X 1. 14.

-A, guirre formula was as follows:
to Oro (normal Brix -.normal sucrose) X 0.4] X 0 .8.
rmal su.. se

alized'probable errors for the Coloso experiment were
tbroujh use of the following formula, discussed by Richey::4

(OT-a 2 R-eG)
(ro- 1)(n- 1)

ance of the data hi the other experiments was deter-
m6thodsfi

SEASONAL: CONDITIONS
P.O.J. 2878 M 1931-32 were in decided contrast where
tit'6onditions differed, the pe entages of sugar in cane
allank the north cO gst and very good in the Sah
M,7. This may be explained partly by.differonce& in
utiolli larly during 'the. critical r1penmg
anuary, and February, as show in tabl '"I.

,a, 44erent plqces during cri*tical periods of sugarcane ripening
Wico) 1929-32, and. normal for 18W4928

Normal
ji2 1930 1931 1932

Dec,_, Jan., Reb. Dec Jaiq. Feb. Dee Jan. Feb. Dee. Jan. Feb.

Iveh RM Ind Rd Ind Rd Ind Rd Ind R&
1.80 8.74 4.,82 1.75 6.63 2-48 4.43 a 60 & 86 3.50 4. (n
3. 69 4 57 1.29 5.86 .85 7.41 --- ------------- 6.75 5.14. t.22
7.07 8.40 S. 15fl. 30- 6-76 2.48 17 01 .87 ------ ------ ------
------ 6.97 10,071. &36 .22 .1-77 9.58 7.58 ------ ------ : ----- ------ ------
rk-t ----------- 4.52 3.82 .41 ------ C 84 3 59 5.46 .50 6. 07 5.44 4.07
3.56 7.11 .70 K 57 1. 15.61 7.6L AG S, 36 & 77 4.64
1.12 2.49 .84 4.11 1.47 6.56 2,24 6.70 .29 4.62 3.43 2.69
----- 2.70 4.35 .55 125 .40 3.96 1.55 2.88 .16 2.60 2.13 2.69
2.92 4.00. 1.39 .&25 .80 3,,89 .87 1.70. .16 2.62 1. 89 2.20
24 129 ISO .&.30 1.59 2.35 3.40 1.07 1.24 3.19 1. 2.65
----------- 2.49 294 _'_ 180 .16 .3.54 1.40 1.27. 1. 50 2.84 1.52 290
1.80 3, 78 L 15 2.75 1.65 2_52 3. W ------ ------ 2.80 2.15 2.98
.97 6.4 2.94 .20 1.63 2 75 io ------ ------ 1.22 1.01 .99
------- 1. V 6.79 L 30 .34 .56 2.38 2.23 .62 ------ 1.86 1.38, _157
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ 2.45 2.25 2.20
:L
Dbisdo near
T*Me, I shows that
%4 with the exception of Arecibo and Barceloneta,
1pag- the entire north coagt and in the eastern end of the island
01" ng the, oxca extending from Isabela to Fai ardo, the rainfall
$i4fficiejit for confinued growth and abnormally high for ripening
December 1930 and Februa'xy, 193 1. These conditions,
1AP* 2$6 0. L. A HANDBOOK FOR CANN-30GAR K&NUFACTURMW AND TuEzu cHxxisTs. Ed. 5, pwtly
awl enluged, p. 48& NeW York and Landon. 1916.
V D. THE MO`V]WG AVERAGE AS A BASIS 'FOR MEASURING CORRRLATEID VABUTION DT AG',80-
RxTs Jwr. Agr. Reowch 32: 1161-1175. 1926.
A MOMMATION OF STiJDFaqV8 TABIX POU USA IN INTRUPURTIN4 EXPZRIMXNTAL UUMTS.
AVron. 16: M-73. 19%.




.

uavnl forA i

the192 copwh~n M finsH
Decmbe 131 ndJa~ua '18,
woe. C on iti ns f n 1 we
of th ot osas nr aiid
7
the ritcal peiod
Onacontofis enecyt
commoly harvest th
of MA IM11M sucrse.
vinndusVeetaiv V" 40
hun~dconiton. PO.. 879cano
su "ld lngtenot oata 'te
gar ]d I
al n thesouh cost herethe orml ranfaH oflhi
0P
im adte ad'Islsssbec oovdw
kee192 rnoofth nrthcostwooade_*,
heay auf t olowd te uricnoof$o

muf f h oladrmindude ae fraw
whih s'evr ood ws er por luin te-al
r~lsP.....88deeoedmn wtrsuk".



















.1-


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4 4 ----r .. .. .
--- ..... -.......-...-......

-h- --4-- -- .-.. ..


-- -------------
---- ---- --- ---



: ..: ... .. ....
.. ..... .. ... ....
-4 -- -- --

-- -


Acre yield
of cane


Normal Juice analyses


Bdiz


Purity.


Sugar In
cane


*1 I 'I' U


Tons
81.2
75.56i
79.48
73.80
88.67
63.00
0, 7.78
67,67
I3 22
672'
11
62156
51.22
45.67
A833
43.44
34.11


16.6
17.0
16.&1
16.7
15.2
1&. 2
17.5
17.1
16.7
14.8
16.8
17.4
16.3
16.9
17.2
17.4
16.9
17.9


PercenS
83.7
84.5
84.7
84.9
81.4
I88.1
84.7
86.O
81.4
84.6
85.0
81.8
87.0
86.0
88.4
84.9
80.1


Pereent
9.6
9.9
9.4
9.8
8.3
10.8
10.0
10.0
8&1
9.8
10.4
9.0
10.3
10.3
10.8
9.9
10.8


Available
9 sugar
pwseare


Tow
272
U
47


6;.73
aS


6.74
& 77
fL 74
6.24
&M
5.63
L a
& 28
4.70
4.68
as
430
& s8


.1 -.-. .... ..-


'iWho Aeold ddata were supplied by afael Bermudez, of the Fajardo Experiment

Ii by letters indicating the origin of the seedling.
tied frn the average f special ar (6 tons), with the exception of plate of .O.
kim hireh hand-nd! analyses were made.;
B w"aC pls cut in January when 16 months old and arranged in order of yields In tons

S1102) the average is based on 17 replications.

yrifaUdurigcop periods of variety trial". at different places
^M y rano uigco eroso ait ral tdfeet ae


Location *f variety trials


SCentral San Viost


Central Coloso


H..mm :: --..


^ i :. ...
"~~~~ '" ~~
;;;-;ifc- :*. 19lf30 .



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=::! 1 "i :..." ...." *
A JtmnsA
JSW-N-
A~nna
....f..t..i.. ..






.. .... .. ..


Inche.
1.65
LAS
1.50
14.73
L92
1.62
1.8 .
4.42
lm 17
4. M15
5-58



&14
': /
,1.14
. 3t6


42"74


; 1930

8epember--
October--
Novmber..
December-

1931

January---
February-----
March.......


July--------
August---
September- -
October......
*eoveber_..
D1932m


JIfnuary------

April----

-. .


Inches

14.50
6.&72
4.11


.40
3.95
&.40
7.30
16A70
7.00
5.80
4.40
12.75
0.85
7.30
1.56


188
.15
.65


1M9.41


Central PagOn,
Hadenda Trinidad


1929


September.----
October.-------
November-.
December--.


January----
February-----..
March-------
ApriL.......
May...-----
June-------........
July.-----
August-------
September-.--
October---......
November-----
December---


1931


Jarnuary


: ):E::n'.): :nmm ;: ... .". "... ". .

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,:: ~ ~ ~ ~ ~ ~ ~ ..: .."..""". ..::.. .
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:,.:":E." EE EE: ).. ):. : ....:E .
m EE:::" E~mEE~mE .:. )).:: :EE:" .'::.. "" E(: "


7.81
1.84
149


&84

5.35
&97
.6.86


10.oB
7.10
LS
3..


7..B
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8.5


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zwel
Febmry ----- &54 M y -------- &
JINVIL~~~~ ~ ~ ~ ~ ----- 5Jn------ 7
Aj U -- -- -- & 2 ul ------ -- .0 ------
IIIW V ------ --- & 347.70--- --
Jnm ------- L 7 Sepe~be--- --I
Jul ----- 728 Chk be ------ &40 ------
Auum.----- 8 ovaW-- LO ovu/., L 0
&9 eozb~--.-- o e=*r--&
0 e =a b & 1
& 46

Decmbe ----- L 4
Janary------- 10 avay -.1
Ferur ---- L3 Iebury----- &
Maxh ------- L 5i&
jxnry----- L 7 Ap L------- 4.6 A dL----4

Febrary- ---- W M y --------- 1 96 E~y ------ 1__
Marh ------ L 3 un -------- .018
AW8 -------- & $ Jul ---------- & 4 Jul ----------- 7.
Ma -------- 1.9 A gtd------- W O M W
Sete br --- .-. soMlb ---- &"6
October-------- ILOD---- -- & i
Noebr---- 29 a~na--- &





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ofeeiicnnua
Surs uiyprar
i rne u nJ~)

(39 ) aFuirgtdlwadlomIT= PretPretPfe o
-- -- -- --- -- B 0 2 .0 $ 26 4 4
prmvrct nFbur)
umrgtdlwadla
su of ------------------- 1 2 1. 07 99 41
an 2mnhpbavmcti pi)
an'4 593a ) at Mr nri
su --------------- 2 6 1 18 29
, mq piaescu nArl*
6 41 o) at w e oln
----- -------- -- ------ -- 2 .1 2 .2 8 22 29
pruvr uti a)
ia- (.6 m) iat i6 riae

-- -- 655 1 6 6 1 A 5

InAri)
Sa|ia riatdlwadsl
------------------!02 96 8. 19 A9












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:; .. .. .... ..:... :N.E.E.

... ...... .... m ....... .. .... ....... ................. .........
V M1 afOmV Sa cPak a: n A- iiii-

MR WA -----------------.----- --~.- .,j~p'H H^ l ^
Sl7*(1.-momth. : .- mm i I
,t.'.j cu-,)3.S-n P-b%


yu^|af 1&7 39 O aim), ft* int% k^iteMfato!ifc **
BE. Q)(O (lo(3math -pri tes auT It t Afri): :- :t :..- ,, ::; i, :

a~ BOSQ (.6uare). Urtns Pairoa.negtd ae ,
gotsMI.l m.- ,------ ---- ... u..-eW...411.. 4.
... ..... ..... ..... ... ...........-.- -....
P.OJ. 375 (Wuomoth wrimsavea st in Mt l): .. :- ,: :. "; 11
M a (3.0 sare), SetB uue n Q ...t .. ... ..
I, la i ------ ................----......-...---.-.-. ... ..
.N. 1 (13-imonth Mvoa f at Itn A t: :..' .


Fddio.8(1. ot)h wtatarimaaattLua Msrl: Ii
.. .............................. .........
n~oida. 70 (11 sere), &ita RliI6nk"MWII4
nolt om -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
":::::" i im i ::: ~ i
Most of this cane was win.under'iitiiii
B.H. 10(12) was generally super to. P.O.J..2...8..
lands of gran culture during both years. AsI q iiI fl'^:
apparent superiority of B.H. 10(12) :VW du-etw.i
rather than to her percent of sugar incanei.
the sugar yield of P.O.J. 2878 m seven fields rsng
percent. In the 1932 crop the sugar yields w. l
ranging, except in one field, from 10.3 to 12.
fertilizer, at the rate of 400 pounds per acre, w
crop when it was 13 months old; and am monisR
same rate, was applied 134. to 2 months la.ter. A :I:.
the rate of 600 pounds per acre, was applied to thie I
was 1 month old; and ammonium sulphate, at the :
per acre, was applied 1 to 2 months later. ......
Almost the only other data available compue..i F
B.H. 10(12) in eastern end of Puerto Rico an om .
lowland clay soil at Central Roig near HUMaa.:. |
P.O.J. 2878 averaged- 63.9 tons of cane p.er acre ad.. ...t.
per acre, whereas on 22.39 acres B.H. 10(12): .avera t
of cane per acre and 4.98 tons of sugar per acre. '
of P.O.J. 2878 was only 9.62 percent, whereas that. fR-.
10.41 percent. B.H. 10(12) was, however, hn::.A sted
2 weeks later. The low sucrose content was ppreS'
drainage rather than to early harvest, as. 3....... acres f. ....
grancultura on an undulating, or semViupha, bid at ^.i
harvested January 15, averaged 49.8 tons of 'An per as.
percent of sugar m the cane. ::.:: ::::::-:
Throughout the holdings of The Fajard. Si!a o.O:
general field trials gave cane tonnage that- usuKDf ",
was inferior to that of B.H. 10(12). Most of the data
from silty loam types of lowland and, with th e pic..t2.
trial, data on upland soils or soils of a heavy type,. ., y
..:. ........
......... ... ...
...* ; ;** : : innni
.'": E::. :*'. :"*? ::i
'* "* "!!! :, -. i :iii; 'n.""
..: ::, .. : :. .. .. ,

....:. ...... .......... ..... .. ..
.99:A ..... ..*: .;M iim.* I "..:




--wyI.J 871 UM IC
onuln rrfigt ndIq*-, i ,PO.
B..1(2.Fr padsisorhaytp
Rio!l hflou ntnehsbe eoW
ofca nfk Sr O yena aaoPOJ
thfs a ncti auxy13,pouI 17tn
th sgr ncaewa 1.7 ecet Tes er avr
edwt hs rmterlln oudl ilsa
umco niaeta .J 88sol epe
tialo aiu ol nesenPet io atclryi
VOSS*
-A nS-AONTW T ETASCMAAH N
SANVICNT
101)i h ao ap aieya etasCmaah n
teado oto h ot-oatlwad.I h pad


cos.'hramomuto oglli o eulyefe
bohcosa Pan bcue fcimtcdifrncsa
fielso 0 ecn netdPOJ 6aesiludrcli


in'h ot. thsntbenfudprcial o oto h






7"t
In the first ratoons the thivia'
sugar in cans o sppstft4wia
&F the .2 mon I'M jW%4W%
however, P.OJ. 2878 was su,,
percent of sugar as opposw6d to"SA.
percent for S.C. 12/4.
The contrast in oane produedon
D n'n the 1929-30 pnima
W tj
'uht, O.J. 2878 4=6eeded B.H.
over 17 tons of cane per aere.
nearest B.H. 10(12) approached P.O.J. 2 itt 44
in plat no. 29, and there the ad* WiW
b 11.4 tons per acre of cane. uring e 1930-31'
We nfall was high, the first ratoon of P.OJ,
B.H. 10(12) mi cane production by. 28.42 tons Pe!
Mal-gin than in the primavem crop. tho
2878 produced 4.1 tons more, sugar per acre did
5.17 tons more than did B.H. 10(12). Thew,
not however, a le to gran-culturs, antinp.,
Results of: 13-mon i primovera, arown at
under irrigation on %o-acre plats an(T cut in Maxvh
in table 6.
TAaLz 6--Results of. 8ugarcane variety tests at CsWt,d &s
Cayura, Ve" Baia), 1931

Culture and variety
Batt= mayr

13-month Primavera out in March 1931; irrigated: Perwa Ila"
P.O.J. 2878 (average of 10 replication) ---------------- 92 4& 9WzL 36
F.C. 916 (average of 10 replication) ------------------- 84 4& 7&*:L 48
S.C. 12/4 (average of 10 replication) ------------------- 78 34-72*L 0
B.H. 1002) (average of 32 replication) ---------------- -------- 4&
........ .....
RwxAaDsox KVxTz, P. L& PSODUCCidn Pit XuXV&A VARmADxs ox cA*A I MM
mzNTA.Lzs. F.R.Dept.Agr. and Com. InsuWEXPt. Pa. BuL 38:23. 1981.
I Soil type not identified.
P.O.J. 2878 exceeded B.H. 10(12) in yield by 5.8 tons,
acre and by 0.579 ton of sugsr.per wre. The sugar ia
2878 (11.10 percent) was practically the same as that
Under the conditions of scent raWaJI during the-firA
growth (table 3), P.O.J. 2878 gave an excellent RIMIM N W-
better than did the other varieties. Both F.C. 91&
were inferior to P.O.J.- 2878 'in sugar production. A
Vo %
utilize, at the rate- of 600 pounds per am, was apphed sw
April 4, 1930. Irriga ion water was not memured, but
once during each of the months of April,, May, July,
October.
GENERAL FIELD PLANMG8 ALONG THR'"MrM COAM
Data o;i general field plantings for the north ooast
under four heads: Gran culture on friable alluvial
on upland soils with good surfam drainage; gm tun
sofli; with inadequate artificial or suriam drsinMe, and -firA




". +
-TAMT F.J,88 NPU RC
|-w ilswr eylwa.CnrlCntni n~h
O..27 eecaiidwt ra'dfiut.I a

Vlr ogidcn o te aite a h aetm '
"P...27;cneunlidonn fed eehrese
4yran suayilsoth ifWetvreisae-cm
Th olnso ohCnrlCre n osacawr
................ th e t mew9 1h ria ea d m s ft e o ln s
wae o eal ek
alh n a osani 26- etlie tth aeo
pe cea pleda ots ndanonmsi

th anmaews ple t4mnts tCre,0
,, mc ft esan s o etliesw sapid
zo-iibl lwia ol.Th 92daao ra!utr
fral.alvalsizar rupdi al'7
M ul' fa ttss0%fibealva-si tCnrl

=Pauea 18
Noml uc

















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I.% (I u"Jol.
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p.. .. a. .t. .. .. ...
.. .......... .. .. ..... .



a S (ItSu), MmssWmss. ni No-
.. -..--...................

P.O,.IM ( a ( a oaturM iwi
]P.OJ. euoniB<^touraml rlm)
-" or od at a ..-.........---
m.ri ^7 (U Mem),c. MucbmB,* _mmid ^1 +]m. "i, li;,1
It nb (W msw) M Ia t I' W .... .


P.OJ. (I aith aMitmot ian anar): -: i
Film for PAW smo*. Terui pl aad 9y .06's .
coi ktcW -------- .. __ .. 'mksl
nad of 2 at (itS maA), cTriika =ouwist Sriu
c mwrday5*------------.,----, -l~ -
7.0~~~ 60190 mACaeia lt iU Jammff): ,
P.OJ. Sm (,gma t oawMIltt a aau ..a...:
m-. no.... (Ica mm) Mu d...di
---------------------------... -.-.- .----*aM S .l^
(Ia=), Saa Antmmls,1 irritated wSmumh
aW *ISW (1bu-dyj- a,. Sa rilO
uplan dop *any loam------------.--- -.
C. 14 (atb grno owoaa)
aDd 3a y a. .. a .
i -- --- .-. ~ ~~-- -----------------------------j.*;..... ..ii


i Miri bdola to Oflntml OL
'rMu.Imb.eaj t. OmitrVac uumra
*Triiftdi bodo to OBtral Paca
so tan gin bM. Bat acdt v fla al. p
-]glnJt... 1 a .


rm j

.. .. ...


.. .* _: :+..J ; :::,.+: [[[[.[++::; 'v
:.. ""5 :+P: m+:.. :
,-,_--
,L :::: ^ ""* *K'-iB
.. .. ,.,,,,- !t i


S ."s: : ... .'... .. :::::. .
Data on a field of stiff clay at Central z Pag A a
with those of the north coast because of the sinlIMltzo
of P.OJ. 2878 which, in these widely separab.ddi
be particulay well adapted to upland soils.
the more friable clay loam a. sandy loam fields th:e
sga in cane was satisfactory, ranging from 10-0:
In every instance was superior to that of th c
in the same or in adjoining fields. P.OJ. "2878 -wa.s
production, usually by a wide margin of approna
sugar per acre. The e data are in harp contrast witAs
cultural either on more friable flooded lolnds .or Pps "
the soil was heavy to fairly heavy (table 9), sad whe
cane of P.O.J. 2878 ranged from 6.85 to 9.57 perosut.
production was inferior to that of B.H. 10(12), te es
- .." .*....., ,. :.i :,: ,,,;i
variety.- A f
0i.n cubuw on lowlanS& WAkiaeut riiitw^^
ag..-Along the north coast gra cSMtura.P.J. N78 (
with inadequate artificial or surface drain
table 9, good cane production, but generally irmyr
content. Considerable risk is apparently mvolved 41
P.O.J. 2878, particularly gan culture, on most lo WluInd
.. .......
.. :......%.............
....
... ......, : : .:.;
.: ... : .". .... :...... ". .. ....".m ":: :; 'h.,








ANZ, VAMTY P.O.J. 2878 IN PUMTO RICO

of aWarcane varidy togs on so& with inadequaU anV" of
drainags4t Centr4b CambaUwA e, Comfancia, and Cairmen, 1.932

Avall-
Acre analym Sugar able W
culture, sizo of f1eld, and character of soil yield -incane SU&S
Of can Sucrose Purity Per we
gran cultum cut In Demmber):
20 (11.75 saw), Constanda,' irrigated lowland Ton# Percent Percent Percent TO=
-------------- --------------------------------- 51. 34 -------- -------- 7.88 4.09
ffm cWtura cut In December to January):
(30 acres), Constancia, Irrigated lowland ellt
----------------------------- ------------- I -------- 5& 74 -------- -------- 9.06 4.87
oultura cut In January):
-(31.5 acres), Constancia, irrigated lowland silt
-------------------------------- ------------ w_ 59.31 -------- -------- & 20 4685
(I rm cultum cut in December to January):
A 31 (38.25 aam)Xonstuda, irrigaled lowland
--------------------------- 0 ------------- 6(L 10 -------- -------- 9.18 & 52
-mon gran eultura cut in December):
Clwas63 twice irrigated poorly
compact day --------------------- 7&00 79,30 9.11 & 83
tura cut in January),
Claras, twice Gljied poorly
compact clay --------------------- K 00 U 08 80.20 9.57 & 12
culture cut in January):
Clam, twice irrigated poorly -
compact clay ---------- ---------- 60-00 1& 33 83.90 10.25 & 16
r cultars cut in i anuary):
1(&5 acm), Campanlllas,' uniffigatid poorly
$awland silty day ------------------------------- 54.29 -------- -------- & 50 4.02
culturs cut in Deoember to January):
39 (2$ acm), CAmpaniUas, unirrigated poorly
Wt clay, ----------- --------------------- 53.38 ........ 20 4.39
c cut ia January)
(9.26 aerw), Campanillas,'unirflgated. poorly
kvjbmd silty clay ------------ ------ -_ 51.16 ---------------- & 85 50
th g= culture cut in i5 Wj:
8 aaw), Monmtate, Vega BaAl irrigated
day loam ------- K00 11.96 76.00 & 75 4.73
th gran culture iif iWjWti:
.1 acm), Wmerrate, Vega BaJa, irrigated
Oay loain ------------------------------ i 61.00 11-87 X 3D & 93 & 46
th gran culture cut in January) I
,6 (102 scres), Mouserratip, Dorado,6 unirligated
lowland silt loam -------------------------- 55.00 11.04 7& 70 7.98 L so
16-Wonth gran culture out in. January):
17.6 acres), Monserratei Dorado, unirrigated
lowland silt loam -------------------------- 4& 00 12.34 Pffl. 30 19.42 4.56

is not given data won not available.
gs to Central Constancia.
to Central Cambalacbe.
by Emilio Rols, Central Cambalache.
belono to Coftral Constancia.-
Vdg& )Baja, and Monserrate, Dorado belong to Central Carmen.

Ong along the north coast;--Data on first ratoons of P-0.12878
do -at Centrals Carmen and Constanci
aare giVen in table 10.
of fir8t r&oons sugareane variety testa on lowlan& at Cmtrajs
19321
Constancia and Carmen,

Acre Av&U-
oultmV, dze of lleld and character of soff yield =dYsm Sugar able NO
of cane in cane Sugar
Summe Purity Per =0
rwtoons 2 cat in January):
19 (16 aues), Constandal Irrigated poorly Tona Petcent Percew Percew 71bW
k)= f ----------------------------------------- 3& 94 -------- -------- & 54
rat(K= I out in December to January):
(5 Ww), Gonstandia, irrigated poorly dndned
----------------------------------------- -__ 41-23 -------- -------- 9.16 & 78
cut in January):
res), Campanilla.%' hrlg&Ud poorly
------------------------- : ------------- 1 32-15 -------- -------- I A10 &Z.
kow Central Conatuicia were suppfled by Manuel 4d V" mm mfiziager, 0". law
Camen by Aristides Gonzalez, Add superintendow.
eme Is not giv4m no data were avvlable.
Mono to.Central Constancia.
_Vv91-dfigned refers to adsquaW of ditdftg for surkm and WdftW drsinogs.
to Central constanda.




mm 4r
14 W,
T~w M- I'ill

Aso Ah
VWWY OMU% do atU4, d Aweta fI=

POJ 28 &t tonsI a i Jnw)
Fiel no.9 (15 wh Ca Xa94 U4P~e Poft Vw P
draneddaylom 0w-I- --------- X-
V.J.2V (M aoos ct I
I Ifldo
F~dno.1 (.7 aa), II
draind zit loa 27.7 ..
P.O. M 9-nothfirt f i a
FW o.4 (-8am, MnsrraeDaadof ~a
la draned ait lo m -------- ------------ A 0 INL5 *#'%
B.B.M (i-mouhfinmtometite~giD-. ,
Fiel no 5 (-79acm) Mommat, Drado h~pte
poory dain d alt lam -------------- : ---------- m o KE
P.J.2M(Mouh ntton ot n arh)
Fildn. 4 363acT M~eratVW1%6Unm
gae filyw lldane oa .--------- ------ M 0
B.H 1 (2)(1-mnt frstraoos atn ebuay)
Fil o 1 1 c),MnemeVpBAuntgtd





28814iUDT O
St|e eatetO giutrhscle teto
imm lit nSuhArc n h hl mso .27
hev'ca.solpriuary-ltrtio nin
n 0i nadta hscn a rimlBslce tPseo
a yeo hc thssnegvntebs efrac
Dr rne loosevd"ta os alva n te
alotivral ieete ortnae rgo ong
mlr hs bevtosar nhroywt eut
'inPetRio
GUNCLUATA TCNRLCLS
er19,POJ 87 o rsi wt 1ohrvn
&cn wspane o'iria fiit ca -ltlolndna
soimm l i ar fibetanaems o h wln ol
bu invrhle ahrcmat n eursgo
-F. o
inPS gop n wscaclaeu
wBte a evdy(al 3 n to ae a
tf otspoan avs. h aite eerpi
tim i-tr lt n wr avse iArl13
th l.Alpt fotdoih am agno h

Ae ftorw 35iiiees(Y2fe)aat h
I m er apri h owadtrectinswr lne
The arrw plts nd te mtho of laning avesom
toteMr.irlfiiiePOJ 72,POJ 88 n
nos 28an. 9.A131012fetlier a terae f0
was l I ~lie to.the rop hen t wa 2 mnthsold
-- At;a hrteo 0ions e ce a
















No. 1 NaI l, pe^


M.. .. .. .
W ..

MNo.asI N&
33... .... ... I, S i i,4t
M,..... ...... ... a
M .~~~~. ...... ... .. ... .. .. .,m :

o,. ..... 4... .. am n...s.a
INJ ... .... .. ....


M.. ...:............... ait S 6S I
M.................- 5 a 0 0 Man a *
.8.------------.-.......---I-- 417.-W:ILS



TAB a mar of r ............f pa-nLn .406



CZ~i da l d cky ca*Zmxroea phase, ^^C&ll 19fl^
P.H-OJ-uhS-------------------AM KVit- H
P .m --- W 0 3L S. .. A '." ;! : ...' i:"!. ,:






."e" "_. .*. U I S .. ...
A rges --- 5 -f -- .# .......'
t aa.t.M. ....... A .
Thp 'bl :th :.ib

Ma.,c.......g.u'mso.,,a., 2



r~~~se .. on 38 :.". 'm' : 8 .88 ::::: li lA
a....... .... f .35.te 3 17 ... ..........


Maof usea


B~fll0 _.. .. ....



P.OtJ.a2 M---.---.----s.. t s a--- as -':---.

tos~svw 2 --------------3Ds5* 6 At
tB.HaaB O(1C) ....----.r----. --- ---.l.u lT.. st. a o teT D w..i.
Mayrie s-- *0.1----.------ 437. 7 L MS ..
MayJu42 --------------_-.-- 3K37a 32X' 1 75"" AOK W
P- ---......................... 30.- 5 O ,

P.O.s. to S.C7. 12/04 14P.O.J. 714, 81, aid
u .3 7,4,ad .4..P.0.. 2714 W.. ta. f. .


IPlanoe ocane pr auction ofPanosgh the npianto ..






10O.2) i878 B.l.u10(1edh.O.e.. Eacherctddt mS
tauient Central Crolo .1and He 82in6c. ooft, .of .t jiar .: ...
Do.L2, of Central Ca. .. ga8n :sj. ':
nab prbable error of the diflfamwne between the aware 0".::''aiUW



m~tl7 20 on I a~r o .lne .: ... .. ... .......
variiee". -0.219 ton. M. .. :* .**- .. .. :r? l
The pnrobbe "AEror othedlfwaeweBbelaenthe acM9mll^^
:; .. .. ;! .. ..: .. .... ...... ..........;:1s






Mau j%1.1ft
In cane production no f diffPmireio..'i
P.O.J. 2878) B.H. 1012), P.J.-27-5 M 2,
All produced approximately 50 tons:. of c
canthp superior to S.C. 12/4, P.RJ. 27146 S.E.O 801,ad.
nos. 3, 7, 42, and 49. P.O.J. i714 w :41 a fa.
matelv 20 tons per acre of cane l. thn ..
supenor cane production of P.O.J. 2878,.:. MA. ...
10(12) is ilustriated m' figure 2. Eac a are h ae
of a %emacre plat. The can. were arane .i he sAe
the plats., PO.J. 2725 aikd P.R. 826:^ gave 900 an

.:: ..: ::: ::: "' E 3::E :"


.. .. ... :. ... :.....,. .,- :,, b
.. ... .... .....
.. : .







































































S78 competed well with Mayaguez 28, P.O.3. 2725, and B. H. 10(12) in cane production
cars woe arranged in the same order as were the plats. Each car carried the cane of a
a lAguez 28, P.O.J. 2878, and B.H. 10(12) showed little difference in either cane production


( ig, S.C. 12/4 is hardly likely to be able to compete with


FQifl-The 12 varieties fall into two groups for quality
ig..t BH. 10(12), S.C. 12/4, P.O.J. 2878, and the 5
ietis nos. 3, 7, 28, 42, and 49) had over 17 percent of
S .&4P.O.J. 2725, P-R. 801, P.R. 826, and P.O.J. 2714)

:I cnV ranging from 14 to K15.5 percent of sucrose. The
r e oper ,18o. months, and late. harvest with 3 months of
tie .ing (table 3) favored ripening. Both Mayaguez
*4 wre- consistently superior to B.H. 10(12). Mayaguez
to..t o latt no. 8, almost identical with B.H. 10(12) and
... percn .tage of sugar in cane.. Mayaguez nos. 3 and,7



.. .. .. .
"''"
.. ... .... .:; ...:.:


P .... ." ""
.... .. ......

: ".: :..............."
EEE E i : :'EE .. : i: ii :i~ ii~ ~! ":ii~. :,,. .:i ;i,:i .:.i : :i r. .
ii :i'?. ;:.:.... !: '! i;.;; : :::!:: I.....: : '" K
iiiii i~ i! : iidi : iiii~ i~i : :i :" :i : :# ::: : :' ,K .j'.:: :.
"i ": : E.! E""'. ":::EE::E .r.E: "*i. :.: .::.:.: !...".


": ':::


K


.* i ::t
. ::.:!*: ..:.



















.1K" .:":". E
...:....
: ... ":.



..
.. "E EE..".'.-
.,. "'. **: ,ii





* 'li..;
S :: :5 :lIE


.. .:=:::


.. "/:,

,, ""
Kill1
" "If









j : ;U






























































Variety


P.O.J. 38-.
Manaag(Ma8-_
B.H. To(ia)---.
----. rA-----
Mayege ....
p. ocJ.ra.....





P. 801.-
MaP.O.J. 2714 S---.


P.0J. 2714-"^


Cam


Pe
stool
(aver-
aeof8)


2iVumwwi
Muss.
1& 0
14.9
it,
11.7
110
113
12.0
9.1
12
13.0
iLt
7.3
9.0


Numobe
93
82
6

97
IGO
108
47

106
.m 1


Hollow nem

wered)


S -


With
dry top
rot(p
pLeam


Tot]l


Ave
age
pm
pitt


Num-
ber
72
^a

21

17

10


NSW-
ber
it0
14.6
0.0
11.0
3K0
Mt6


&0


lead
OfEdim
hop-
cade
pfeoa


Number
52


la
37/
i 7

aenaa


w.b


vested
cam
ph=


Number
112
130
I=
330
76
132
114


SI -
U-


""'i7"r21ui~""ifT"143'


mmH

1S
.i ... ....
a... .

-Td:W


'Number


.7"
lia
470.
U4T
Mt


ma


- S U


.. ...... I
- t' ..... lai


I
Pr-s
1.7
19,,

Si,'
A3 2
It,

it.,
*21 :.0


lHeminio Aosta, of the Lai Depermnat o Apolte. t ingbt !.i
apervisdng the barvest :
Underathe ordlnar metynod aR tatd mad haesy latlarnd we ead M lla
take 10 bet of each of 4 dif t ps per v Tety :
SUnder the Ague method all tem oiu of 100 l s ordeo h vastit ".:
taken from each of 4 differat plats.


.. ".. ;. .......
: .,. :;: E"=


..".".".......".
... : .:;"::** ::.-" .i : .:.::


......... ...
....:" '... ": .." .' i" .


: ... : ...
"-EE .. :E. "*:: : i, : "
*". ." .. ^ l -:E .::


1-4--I-I-.! I &


"! m
.' :E::EE::


:" .:E"EE':




r I I


VAWZTT, P.O.J. 2878 IN PUERTO RIC0
5 had more sprouted roots and leal pieces than
P.O.J. 2878 or Ma aguez 28. Due to their recumbent
the canes of B.H. MO) had a bigher proportion of j i ts
ed roots than--did the canes of any other vaxiet Th
different ceiin the ease of trashing P.O.J. 2878 and aguez
trashed much more freely than did P.O.J. 2725, and some-
so than did B.H. 10 (12).
of eane.-To determine the relative amounts of pithiness,
Alurfaces of 2,000 harvested cane pieces of each vanety were
(table 13). Pithiness was, pronounced for P.O.J. 2725,
2714 and P.O.J., 2878; rather pronounced for May ez .3
Ma aguez nos. 7, 28). 421 and 49; and negligible Your S.C.
for E.H. ID(12). H611oy centers were found in 5 to 8.5
t-of the canes of. the 3 Jfivan vaxieties, in only 1 to 2 percent
of the 5 Mayaguez' seedlings, and in 0.5 percent of those of
No hollow centers were found in' the canes of B.H. 10(12).
Of ROA 2878 were less solid than those of Mayaguez 28.
rot.-P.O.J. 2714 suffered badly from dry top rot (Plas-
Most' of, its cane tops died -before harvest, whereas
the other vArieties were practically unaffected. Not only
nearly twice -as many more P.O.J., 2714 cane pieces per
*ith dry top rot than were found in any other variety, but also
extended over a much greater area, generally occupying
ea''of the out surface examined (table 13). Practically
e in the amount of dry top rot of the P.O.J. 2878, Maya-
and P.O.J. 2,725 canes was observed. B.H. 10(12) and
42 had,-solid canes and were practically free from the
The data on dry top rot for, the two series of plats were
infWation.-Wolcott. states that cane-borer counts taken
carefully controlled small-scale experiments are not
The data presented (table 13), however, are valuable in
that none of the varieties axe extremely susceptible. As
observed repeatedly near Central Aguirre, S.C. 12/4 and
10,(12 were found to be comparatively free from borer attack.
2878 was -congstently less susceptible than P.O.J. 2725 at
'The higher borer counts of P.O.J. 2725 axe probably due to
6r proportion of clinging leaves, which may have harbored

GOWALAL. FIELD PLANTINGS AT CENTRAL COLOSO AND AT ISABELA
jiite wideSDac1119 that induced the formation of water sprouts
ased the percentage of sugx in cane, results with P.O.J.
Central Coloso were in general favorable, as shown
140
G. 0. ON METHODS OF DI&TERMMNG BORRU ABUNDANCE IN CAME FMLDS. 1UtW=t1_ Boo
& 11-ree. Bul. 88, 2 p., 1932.















laS U*.dum. a~sal... .....



Owesw, umrid o.N 3glanceS~BUi^
Fliea, id ne. 12 g m prluuwuua ng~ -.-. awne----
A s a DI ia t..h S..... ......... ...-......-......
JMomiJrI. 1.. .... ......

Javierue, Bidd no. 7-A; 13-mouth piavets cHKatlbar-,--.
Javi de, Bid no. 7-3; 11p-------[. "
:tn'3.to ot a o t...... :



Maier, kid no. Ua-; 1-o9moth pan anat fo No.-t--.----- N







Maiom!,Amd no. 27; D 16;-t 205-4ufth grian otunat keenD~oS toAg --lf^I
La allemda, Sidd no. 0; 1434-moth pen ltun eat frm a. 13 to-I-----------.yiBI
MA:mp, field no, 16.; .m....th .an .ltos et N o. ,......









BMtar, kied no.1; 17; 4 o1-month g ralais outturn mBbtuIt Deebe--.-...--5MB
Mlagobmo field no.20 123-A to 1-month gna altears cut in Decmbry------..cf..
Reu Odama'-B-d mouth raooiaDcmb -----------------





Vaulanead oVij, field no.22 134- to 1-month pana oltoa eat ha Deaembry-.-...
Bauofd no1- to 1 5-month graI ..ltu rem at in Dembe..-..--.-..
Luasn, Did no. 2; 16- to 16M.-month pan outunr eat in November------


Rsp'tal, field no. 47: 1654o o-month grime sit in Mat rshm e-.---------
Espitel, flidd no. 46; 13-to1-month gatnaclt cat n NTMbarc--------..---
yA elag .. ." .4 ............... ......... ...
'F. ..ield. at" S1 mntaR m n, .ad.e Corals. w: en.:. ..ot.....mb...








otaln -mo-e-g-,-1 --------with an avera-ge.36.- t------ons ocane -
The d. suga r. in cane" gt7 waslope .i i.. .o .mii. .1...ii









hanpfied no. 4ec Intingmonl4 fiemlst In s eai--n-s----t
d a ota 1 foisabla hic bec ac utso difeen con dith----------......
ratoonofP..J.288wer encourag Oe f. o...:"".. .....














feldvsece d0 12 month 16imon per mon tch.Only4ngrn------u-t--ra
Aveamge ----.--------------- ------------------------ -------------.- -. ila..^ J
,, .... :: .... ....
Js~ m.7 l-mat Wb~er m : __re~r .......... .......
_.vi~ ? ; !zr,,m,_ .pr nm...................... ..





otal, acra 177 ac-e; withrm a an amrage o 6s s o a ...... a. ... ... .. :
m~rm m a m ... .... h,. ....... ..... ..
A~ raDO .... ... ... .... ... .... ...... .... ... .. ....... : ::h.. ......iiii
..... :: .. .": ".. :i :ii
.....~ ~.... :....... i ::


















hies can pRioduct, iodn and oonsic2 yielded as mucf h u garUiii

Data fgor t 193m w2asm at lofeN on thre behavior of PsO-A-
0faie to taent 411 onacr ar eldso wn ionw2 8-toAbles i aQindft16
La sa no... sec"ed :. late ""ovemer. "mt'iga..ft .1 t
M a ..... .....":! PJii













data Adfo.r 7 1. tobea whc bcaulus cutft diferen ---d--on 7
Xfohno, Wtd no,3,- 2;l* toh 3monmth ma 001 cut in e em ....... ........ .-'4" A....














8-mouth of oo cut.J in7 ewere e -----ag --g.----------of------
]uc fsg, caudlno. 32; 17-oto mmte gm ad moarcthin p. ..ta "
fields exnoed 0. 4 1 t-; 16-montha pe mth ly 4ain ......r.-.... .....








theis Addno. 52;duction aGofmnd ny2yeddath gsugai w i Nvmer ------- ....
Da~taL Adfo. 49: 1932t crope -ant inoso Marhe --------------------
30 Add no......ds tota 411 a res. a es.own .............. ..


... ..,,T ., ri l






No*~~~~~~~~~ ~ ~ ~~~ Camda ItI3ot rmvacti w -------------
I Ttud scna- t 177-mo with an a o ult "outfro V mN ov. Omni&b. 4n.......... .. ......
F d at al, dno.m; 1 o -mouthan No C m tm nd;ot imliNi. SoJw --

The sugarincne. 0was 10m ImUeutr cet orom m.1torei "'iV






than 10 perceno. in onte X In some..n s-i
w ,s seurd ino. las.te onv. brr Om it hD m.er. ... ...
doatfor Isabela.,,1 whic13-onh becauseof differe....t ... .;n" -
r natons of P.h mo.J.out878 were m enc.......... ................ieM -.
Buceo.nd no.77 tonspe mo of cane,, and anothemer ....52...68 ...I

dqwuction;ofsug-roncalculated omn ra ..................ro ...r-ate ;
fiels.eceeed..4.tn:pr moth.Onl4 .













:. ..


.. .. *" :... : '
.... ........ii
.. .. ... .. .. .. ..... ............
24
The ugsrin cne as I perentor ore n 21,Ii

than10 ercet i onl4 feld. Insom insancs n
was ecued n lte Nvemer.Omi frm .........

da o Nsbl, hc ecueofdfe .J a




'05



VAX11rrY P.OJ. 2878 IN PUERTO WCO 21

lj&-ftaufta of tab of sugarcam varidgies at cewral col"09 19881
wws
Normal Juice
Acre analyses Sugar ACM
catturs. sizelo:f Add, and dwacta of soil Yield in cans yield
ofcane of 3ugar
.... suam Purity

th gran culture cut In February):
7 (is acres), second district of Moca Tablan Tom PeraW PereW Per&W Tom
40%lalgated poorly drained I lowland; Zty clay-- 2SL 23 ri. 14 813 M 00 & 82
(14-month gran culture cut in January):
7 (13 aerw), second district of Moca, Tablon
lirrigated poorly drained lowland, silty clay---- 56.68 1& 30 8& 9 1L 92 &
culture cut in Decembwj:
), second district of Moca, Tablon
ly well-drained but flooded lowland;
---------------- --------- ------------- 5176 14.01. 79.9 10.50 & 54
pth Um culture cut In December):
26 (W57 acres), seoond district of Moca, Tablon
irsigatod fairly well-drained but floodedlowland:
-4 -------------------- 4165, 14.02 818 10.71 4.57
pan Witura I~
(IZ27 scm) second district of Moca, Tablon
Q'6A; well-drained and not flooded
-------------------------------------- 3L 75 17.32 83.6 1& 26 4.21
cultum cut in December):
second district of Moca, Tablon
Wdrrigated fairly well-drained and not flooded
,day --------------------------------------------- 37.28 M 78 83.0 1184 4.79
th ratoons cut in February):
21 (0.26 acres), Rrst district of Aguada, Tablon
urArripted fatly well-drained and not flooded
oky ------------------ ---------------------- 2& 45 14-45 76.7 10.58 3.01
anih ratoons cut in January):
21 (30.07 wxw), first district of Aguads, Tablon.
unirrigated bkly well-drained and not flooded
-------- -------------- ---------------- 2L 22 16.99 87.0 12.60 2.69
outh ratoons cut in January),
(1&15 acres), first ilistrict of Aguada, Tablon.
; unirrigated Wrly well-drained and not flood-
clay ------------------------------------------- 45.68 14.12 79.4 10.55 4.82
(timonth ratoons cut in March).
M O&W acres) first district of Aguada, Tablon
nuirrigaiW fairly well-drained and not flobd-
------------------------------------------ 42.03 1& 99 85.0 13.16 5.53
gran cultum cut in January):
42 (4.14 acres), third district of Agaaft, Cerro
unirrigaUd fairly well-drained and not flooded
------ W ------------ 3 13.47 79.5 10.07 98
gran
W. 42 (10 acm), third district of Aguada, Cerro
unirrigated fairly well-drained and not flooded
clay --------------------------------------------- 5& 41 14.80 83.0 11.32 & 27
...... ...... ..... .... Primavera cut in Febraary):
Aw. jg.scres). third district of Aguad% Cerro
ted fairly wellAbnnned and not flooded
--- 41.95 1C 17 79.1 10.56 4.43
cut in April)*.
--------------------------
44 (17.53 acres), third district of Aguada, Cerro
unurtotod fairly well-drained and not flooded
(Uy --------------------------------------------- 27.18 16.25 SL 3 12.56 3.38
ratoon cut in March):
12 (20 aaw), second district-of Aguada, Limon;
I and not flooded lowland; clay--- 4& 61 14.82 80.6 IL 16 IL 87
ratoon cut in February):
res), socond district of Aga&&, impn;
and.not flooded lowland; --- 42.22 14.48 82.1 11.01 'L 0
cut in April):
f'22 (5.01 acm),- third distfict of Aguada, Tablon
unirrigated.poorly dmned and not flooded
'Clay -------------- L ------------------------------ 3& Wd' 1& 13 8& 7 12, 16 4.09
(14-imouth iatoons. cut In May):
22 (6 acm), third district of Aguada, Tablon -
unirrigated poorly drained and not flooded
-------------- ----------------------------- 32.09 W81 SM 6 10.39 33
mtoDns out in June):
22 (4, acm), third district of Aguada, Tablon
unirrigated powly 4miued and not flooded
----------------------------------------- 20.14 12.39 90.4 9.32 L 8s
06-1ru-nth primvera cut in April)-
*,O. 26 (2. 11 Acrw), Colobla Casu"dad, Aguada6
------- 7 ----------------------------------------- 2L 78 17.40. 7W& 6 1& as & 37
Bu lied by Guin"Ino Cabrera, Central Coloso.
M.9 lwa&dratned refer to adequacy of ditching for surhm and artiftal drahno,











































































Variety, oltur. and iae of A d ld



P.OJ. 2878 (So-month gra cottan cet in February ad Maim): A. emS mit''
edo. I (7.81 ea). irrigated undulatin dd h.M........ MU 1... 4..
P.OJ. 2714 (-month eultun aout in Mab : a t
field no. aQ1,ro............- ------------------ 4&0 1S...
P.0J. 2878 (11-month matoons mut in Mmare):
F bid no .6 5m(2..42 .CM)-----------......-.-...-... .-- .
.LO0. 14(12month ratoom ut in Aprl):
Fied Bo. 6 (1.81 &am) --- w8 AsI
P.OJ. 378 (Lnath ratoom ut in May):
nFddB md((a.23&n))...... ---..-- ---- am a*
S.C. 12/4 (13-moth ratoua eiat n Mare):
Fd6dnno. Bn)SSom)--AM-- ---------- --- IU3L Ul A ,l I.;l|
lqdd no. .. .....ers........ .........
SData- u by Quflrso abwn Oeatmd Oo ,.... 0...:.m iit...rC
Nwm o(-husA lndsd8 aubjet to flooding maddal dn dweL A lt sm IiMa." O
brown clay wltb a vwy poroms mabl. : : i


S ..... ......
,, : "" ":... ...... ...
.... .: .
: "::E.... .. .. : :Ei.. E... .. : .:::: ......
... ... ..-

:: ." ~ ~ ~ ~~~~.. .. ,:,.:.!!;. i? :::. :.. "... ii ii
": .. ....* 1 -
..::.: ... ... ... ...... .......... .. .
.. ":.:.. .. :: .;.": :: ...ii" ::i: :. 'ii
-**I .. *:, :;; ** ::,; ..*; .* .....











SNormal Juice Ac'
A i l -------Sugar yield
.1*i.. V. va tidmmure, and size of field 4 -----o
..: .. .... n e of
KI, P Purity SUM

':ll!? : ...i TPer- Per- Per-
|O th Oecut In April): T cent cent cent Tou
J Ak 41IW -.-.------------------- ---------- 29L MO 1& 47 81.1 11.0l9 & 47 :
ttn i 0 s ..ooe cut in April):17 11.69 47
4IAQM-O------------------------ 33.65 1&.97 83.2 1223 4.12
i'ratoos cut in April):
(0.00am)....----------.. ... 86.--------- -95 86. 13.18 3.37
n ratoos cut in February):
I j ai re).*....------------------.-------------------- 26.98 01 7.0 8 13.23 W
*~lp~liE~oitliFfr' culture cut in January): 4
-rl84 1*B ---------------1;--^ -------------------- 42.97 13.16 77.2 9.67 4.15
anth g oultura cut in February):
------------------------ 42.10 13.9 7 79.7 11.18 4.71
"gtf-------- u-lture cut In February):
------a---.-- ---..-------------- 11.45 14.33 80.9 10.81 1.24
....u iltura cuot in Marsh to June):
--------- -------.------------- --- 2 31.66 15.54 82.0 11. 81 3.74

....t of differences in harvest dates the juice qualities of the
varieties s are not always comparable. The most striking
thegwwily superior percentage of sugar in cane of P.O.J.
over that of the same variety at Centrals Carmen,
:.. :.. .. ...
d Plazuela, owing apparently to better drainage, less
"A.e period, and the more suitable soil types.
zwo theC.. Colo P.O.J. 2878 canein m 1932 was grown
.... -undulatg hillsides of clay soil. Furthermore,
iowWre largely made up of a fairly stiff soil and were
.ifto roreflow for protracted periods as were those along
5Y Ei n 192 at Coloso the sugar in cane of P.O.J. 2878
k#m~tesntn only two fields, whereas this value was seldom
tie iorth coast.
40t Central Coloso near Moca the percentage of
P.- O.J. 2878 was superior to that of P.O.J. 2725.
ihpwver, P.O.J. 2878 was inferior in this respect to both
14 and B.H. 10(12). This was due in part to an earlier
...;. t P.O.J. 2878 must be harvested early because otherwise
fi rop makes a stunted growth, due to arrowing. The sugar
1011 per month was lower for gran cultural than for primavera
t1to,6ons of P.O.J. 2878. Where irrigation water is available
y spring planting can be practiced this is apparently more
than fail planting, particularly at Isabela where gran-cultura
'nt badly at the top. Fields of P.O.J. 2878 gran culture :A
from 0.188 to 0.265 ton of sugar per month at Isabela and
0CIS to 0.359 ton at Moca, Aguadilla, and Aguada. The
sad pdmavera produced from 0.195 to 0.36 ton of sugar per
B bela and 0.307 to 0.48 ton elsewhere. Presumably the
Iad first ratoons combined would be more profitable than ':
1g0 cultural. The latterwould occupy the land almost along
SsAhort-time crops if the resting period between the spring har- :.aH
iil plantingis charged to the gran cultural. Complicationathat ,
W. to adapt such a scheme to the customary harvesting pe- .
nit practicable to discontinue gran-cultura plantings alto- :*
StAppe however, that in the Isabela area there would be some
kMem increaing the area devoted to primavera plantings. i
==..= ... ..
.=.H .
"H~ ". 'i: :
H tI,.: .:, ..,=..,.; I.
Hi k.: 3!i ::: ::.: ; ::, .





























in
.....dr ........









.P ". .:. ..











I"!" WarW 4-P.OJ. 3073 =Ads splendid 400hj IUfrttn.:11-."4
tPi~chem~bs:19 "Mm













the "if loipmi factors for c:: atbab
resistant, varbiet thatV 01l cove thP goudaplyi
..... ..













is needed. Ve;ry late and spam:amiig^^^a
tarater. *: n
B.H. 10(12) is not suited to the ImbeWditic
vrabl fames theft. The early, arr own I aa IofI..
objectoabe ratoonm of tin varXt ..U ....w ....
when the canes are not more whan .12 10-1.5 K e: t4
Even late harvest in May wi






resy varieties that have met with pou apbly
nlate-aeewd r P.OJ. 28and7 tsa .auinh.gj




a rCt 121. No va -A
B.H.a10(12 isga nrotduited to theIseabdov&ritie
plant one or the other of Sea a wing ht




costs n the fi rations of t.Q n2/t wialr
the tmewhat lower pn renta 1f "to iA caeS
Neiy of these vatROhave i"a' w"mod Ki my kv $..
atarwigPO.27,ad t se
................%...........
















sugar~~. prdc.n of the .. tn.na
plant... one or t o od i
[ diiiii..... ... ....
..E ......... .. ....
Neither o these:vrieti.s s:n*"hqp


.... .4 ...
di1 E't.id. :t.. WE:H"




AXVX1F P.| 88I UITWO 2
MIaeaihwvr o ntrl n tvreis u

Aa fartoa plctono ae nanwyoee
ditrct
GXN.MUATI A ETA AA
%1)i h ao aev eyonteCnrlPgn'rpr
Co ndrg ftesol hr aeago
sm etr n r elaatd ota ait.Msi
ryrpdyteeadoigtoteepneo oun h
B-.1(2,amswOrssatcnei al edd
75hsbe susaifcoybcueo
1" Wn
abehbt'f!ywwn.Rprsaeaalbeo
reut n1913,n o he axeytilsi hc
wa lne ncecebadfsin ihBH 01)
t0 hrwr orYar lt lne oec aey
lo 0 2 e oudfr oac u ougi
*eie e n s hrfr eerlhnia o
aite.I aclaigtesgiianeo h aaa
eahpa f ...27 wspie7wt h w
of.............o...cu...he.su..os.anal.ses th
tsO h aevreyweegon oee. h



















Varl ty ...........d p t .

B H, 0&A );. t p ........ ... ..... ........... : .S .~.,.- .........
toJ.aa tta--- -------------------------.
,H. I0.L; p -lat --. --. --.- ... ...--.. L --..- -m.'pd---
.oJ.4 .... ......... -. 1 M..... ..*'
P. O iT 8 plst C.-....... .... --- --.-.....- 4.- -... ..< 3
AL. Io ; PALo ------,, --... ........ ..
P, plot --------- ----- K. --
BJHEL8(1 ) aSfTPOraUopt1e, 16 B7)1- -.. .-.-.----- 3L ft a
0P.OJ. 7(Avaraeof plats3 4, 8), ...--........._ Jt 41l7.17.A
Anra gu of tour rs pte c ut is inn wOhs 139 moA dli -.

Productions were very variable, hiower,
13 to 1, indicating no* significant differences betwS e
in ratoons. Such advantage as P.0. 2878 ba"
almost entirely offset by the iger .rpre.entage
so that differences min sugar production i
heavy during the 2 months preceding harvest t
with heavy rainfall and on friable, alluvial
B.H. 10(12) ripens better than does P.O.J. 2878.
production per acre for the gran culture and first .......
tons for B.H. 10(12) and 11.253 tosfor Pf.OJ::4,Ia.S
ty should be avoided when cropping P.OJ. 1$,

Clnt ra Pagean an-.uuri variety triad ot
19US.-In the Hacienda Altagrada vnrie trial Ct
subject to overflow, P.O.J. 2878 exceeded the owi
B.H. 10(12) by the definite margin of 6 to 7tons peracemiiwua..

......... ....
The results are shown in table 19.
TAuid 19.-Resuts of grHcubura&Zaarcans vie test.
Control PagW an Dolores A-N, 19S5' I


Variety andpat a atad


P.OJ. s .' 2 -l-t -.-..............-.-.--.-.--- ------. .
P.O..T. 29%; t4------------ ----- J-0
B.H.K10t%;plt----------------------------------a---- ES
P.0j.2.t76; s------------------------------------. tO-----
B.H. 1O(12); pslt --.------------------------------- -.....
P.O.J. 3 t78; pt4- --------------.----- as -..km i
B.H. 8O 1 ; p st............ .......... ........... ......... ..i.~. .......
P.0.8 lt-----------------------------MO----.-
P.OJ. "8 T- of .. 2, 4, 6 8).. -------- ----- ft.
B.H. 1o(2)(su or i oatT l.....).......-.-.-.......__ ;--l-- 4 U ,
--------------- of------1,-3v-- )8-------------------------------i--iu.!| ll
The dataswe filled by WaldemarRif,ofi.R B&.l..C& a. i-.
*The sumPIhK data 6 baed -anmanfra OdS.V wada
peOa. UMeaWnOereM In &Vn of P.O.J.-.4n tdcmmapWOan&
*Avges of 4 pIltS a. IIn lmo, out In Daebarb witeh n17M m .! ,a .,*"ii
.. : ... .... ...H
'. ...... .... ..., i.ii,..

........,....,,.'...j'......H...m
.. ...... ... ."...... .. .. .... .... ....:." :"::!EE:: ii::.i i:""
..... .. .. ....





4'

466ARCA" TARMYrY P.OJ. 2878 IN Puicwo Paco W

ce in favor of P.O.J. 2918 is statistically si*gnifficant,
being 728 to 1 that the difference in, cane production was not
chance. Owiag -to both a low sucrose and a lower purity,
2878 led BH. 10(12) in sugar production. by only 0.357 ton
The soil was of a heavier type than that of the 1931 gran-
taial at Ham*enda Trinidad,. where B.H. 10 (12) was definitely
to P.O.J. 2878 in. sugar production. P.O.J. 2878 had the
ol bakg planted in pieces about 1 meter long. B.H. 10 (12)
ted in short three-bud cuttings, one every 30 centimeters
rOW2. to prevent. mosaic from spreading too rapidly. Since
(12) is susceptible to mosaic, infection from one -j omt of a long
Wly to spread throughout its length.
P wan-culturara trial at Hacienda Egperanza.-
of 'a4upticate gran-cultura, -variety trial in which' P.O.J. 2878
with B.H. 10(12) were gathered at Hacienda Esperanza
I 1 Pson on urigated day. The crop was harvested in
Pal, when it was 19,9 months old. The results are shown

lof gran-cultura sugareaze varidy tests on irrigated day at
CAtral Pagan (fidd Pagan-" V 1931,

Acre Nmmi anwyses of juice Available
'YoW sad plat yWd of W spg'"
'cant Brix Sucrose Purity, Per am

rA
71OU percerd Per" vow
------------------- --------- W 60 ---------- ---------- ---------- & 617
----------------------------- fiL 40 ---------- ---------- ---------- 6.588
PW 13 ------------------------------------ BEL 80 ---------- ---------- ---------- 5.941
------------------- -------------- 57.2D ---------- ---------- ---------- 5.851
57.20 --------------------- ---------- 5.78D
61.60 ---------- ---------- ---------- 6.301
----------------------- 61,60 ---------- ---------- ---------- 6,224
5w i ------------ --------------------
-------- 60.00 ---------- ---------- ---------- 6. Im
58.30 15.8 13.1 83.3 5.891
plaft 219 41 6v and 9)2 ---------- 60.80 1&8 13.5 80.6 .6.219
and those at were made and harvested through the cooperation of Waldemar
Co Central
offtwW4i; plats cut in December when 19% months old.
Oj. 2878 is well adapted to the stiff soils of the Anasco Vallev and
*ary rapidly, especially at first, as illustrated in figure 5. l'ifty
of P.O.J. 2878 averaged 2.03 meters to the highest leaf triangle,
'as a like: number of B.H. 10(12) canes averaged only 1.9 meters.
was considerable variability, however, in cane production.
28,78 outyielded B.H. 10(12) in only two plats, and the two
0 showed no significant differences.
canes in both trials of the 1932 crop season were 19% months
harvest. In each case planting was done May 20 and the
t was zompleted in late December. Rotting of a considerable
,.of the cane at Hacienda Esperanza. rendered cane tonnage data
able. May &B.B." is apparently too early for
-.4mults in gran-cultura trials wi P.O.J. 2878 at Anwo.
gran cultura- in the Anasco VOey on irrigated lowland showed
advantage of P.O.J. 2878 over B.H. 10(12) in cane pro-
4 and the sucrose content of B.H. 10 (12) was the more depnd-
The early growth made by P.O.J. 2878 (fig. 5) was. superior


































Ali!



Wii;i,,, ...... ,i








Ito
1 ..,5(((i;:II
%.1 E


KI :E): )E: : i i
C I ". :










I i ii."r
hiiii~N~











*il- .
i : .H
























I: mm... ..I L (1. .. .


*A an lo uw fttowflgbt. ?fWMtW
... APh .to.aphd Demb.. mimmm
ii iiii i "i i :.... iii ii i i i ... i iiii ii i i i ". : i: i i ... .
to be satisfactory (table 14). The -AM",
below or barely above m10 percent.O I mm ms.
mtion. of much of the canae ma to .be discarnS m
ough for acceptano at the mill.
The general field results oR the 1932 crop

.. ... m.... m..... .... ..."...
Central Pagan are given in tbla 21.. m mm...N .

TAsm 21.-Raulte of su treme wisp ss emduskd Votl
PJU9,AMU, 19SD MMA.,
.. ~ % 1. t: ** ""*."


-- '... '.. ... ..
.! :..'." ":

.::: :"' E. :.P E.:
Vra7t, axiituse .6. of1fied, and cabaet.r .14mW


H jM:. Wj. ~ I i
iiH I ii

.. i .. I,
.l^ :.E ^ **"U' lj' :E:
I~.. "*.l":"1""^
i', 'M ^ :: + ': '::ii 1. '"'


I.Or. e anaa a a e af a a at-b ........
P.OJ.226J15.montlhgroGaeatuatiBJaIur" : W
Wes)-S Est ifW aate Ll-ntsdgmittl bI
.....im~ B l M ~ :. 1 s:m, .! :::,
2idulto Ifl. --,. a. a. .-. ... *d .S ..
17.02. 32. (1&m.st gin SIm M 6m,. U ,. ).'i a,' ii,:i!
PA U -= math a m mu m VatIn: .... .. ..II ..i .I m .........:(I:,: :
11 5' 1 4( (1S actfal s. LIhua.u. p ,-, 3I
duleSa Ji ld.------------------.....a.. :
P.OJ.M (116-mauh an Stmos.me IM tr a ....... 9M
um."dula ed -- ------ --- .: .. .... l


,, ..... ..::... i.. .......
.. m .. .. ....mm mm .. ...
... ... ii ( i ( (( ..... .. .... ..ii
'Than data wmmpldbyN.E.2 ewatTS C 16'-~

I BemuseithesIil Eom: mmst um:ph:dthe mais t typeS 1w&
.... m m mmm I: i: mEE mmm: I I """ i... .....
m. m m ............. .. :":.....

... .. ... .. ....ai

..'L hh !. r;~ :~...








Noma juc
Acre analses vail
tue ieo ilsz hvetr fsnyedSgral


Ofaei a ua
Surs Prt prar
Oi ot rnctrcti pi)
(2-5arsHced rifdd miae.T= PecWPra erW Tn
,b d- - -- 3 6 1 5 s .8 z 0 9
grnelurctInArl

(18a",HdnsTiiauirgtd
la d ---- -----I-- -- 32 2 54 9 9 16 4

thPiaeaou nF
M5arsHdnsTi~dd ra n
-- -- r ---- -- 7 97 M7i 1 1 o 4 5
l/U*M=i Wr
A deHolna rniairgae nu
---- 59 73 &8 35 0
grncftmct nFbur)
'-aina rndairgtdlw
-- -- -- -- -- 6 7 12 1 1 5 & 9
,i utroti eray
seO aedTiiai lw
------------- 763 &0 9.8 97 .5
pr//motI Mrh

WM ),HdnsTiiairgti nn

-- -- ---- --- ------- -4 .5 1.0 M 6 L2 .6














g :::::: :: : ::,,

---------------.---_- a*IE
---.------- 71...
F.o3. ... ............ ............ .... s.... .
1.021 14.----------------------~.* ..
P.C. *1... .... ............ .. ,..........
P.R. Oan --- -- --- ----- -6 a
Tbpd~ata- by7P. Ri~hsdm Kus.tb4
P,~~~~~~~~~~~~ O.. .............................".


Twa termwnatlel hat exnSwantSfem




necesagy All varieties grew tell eti
1931, truqhout the crop period.
13,when it was sitpplemented byiriaonwt^
therefore uninterrupted. iin l
as only 1.15 inches of rainfeI duringithesu nh of%"~
2.66 inches during the preceding it : ri
Conditions were much more *favorable foriUI h*^
P .= __ .. .. .. ... .. .. :.... .,.......:.''... .... ...".....
r.Ja t ... ..... ..... ... F A_......'....
... ... ..- ...-..-..






at Filial Amor than at Coooeo. The
e ~ l .. .. .. ".,;!" :" .'t ; ..." .':" !i.... .....,. ,, .... : ,,





(table 3) was 140.36 inches, or about i i
was more closely spiced in the r, one cut.......
1931, Ient was -as~ ::b :




ther0 centimeters uninstead of three cuttings et
asonly1.15 inchesofranfl uh .: ....d. ...
2.65 inche during the m ;.,i


aond PtionsJ. 2714, which were failu aft C


Amor, respectively, 74.4 and 69.2 tons of cane.p#.
ranked .fist in cane production, with a. average.
per acre, or nearly 30 tons more than a
The comparison between P.OJ. 2878 ad
......... ... K .i: ..



interest as, prior to the introduction of PbaL.tS,.!.
standard variety in the han German ee K h:.
in cane production between these two cases w :.
3 tons per acre in favor of P.O.J. 2878. The o
this tris was, however, the superior juno qu
which gave it a lead over P.O.J. 2725, P.O.J2
four Puerto Rico seed .g. It exceeded all other va,
ton of sugar per acre. n the rather compact .il li"
they in (e th~leySa Grma V11,,



the San German Valley similar to that on whichWt
conducted, P.O.J. 2878 will probably outfield P.OJ.
2714, F.C. 916, P.R. 801, P.R. 803, P.R. 807, and P.RA,
gran-cultura plantings. h.... ......................
.1 -".j l|
GENERAL UXBI) PL-ANIINGS IN TEXaN 543OUANU Y41MH
The 1931 trop of P.O.J. 2878 in the S G mJn
contrary to resuta along the north coast, siera toy i
and in cane production. Central rka, on cane ldi
cly type, secured very satisfactory sugar yields O.
P.O.J. 2878 primavera (table 14). -. .. d" ."....
Data from the lands of Russell & Co. are aviabho i
tion only. In 2 fields P.O.J. 2878 was markedly
a n ..e..c.: ,...",?na .n!
P.O.:..2878 r::.::r. "table"14).

"" 2':: i
.:.: ...::: ..
... ... .. ..."" "
:. .' : ::: ': .::: : .. ".. .. ...:, ...
... .... ::. :. .....i iii!i': '
.. .... ,. .. .... H 4 ,:.:..',:.::: .. :. :;. .... .... i! ii
......~~~~ ~~~~~~~. .. ::... :!i,, ....i': ; ":'i ,:ii l
.u" F ":" "
T... ..: .... .: ...:. ... ....: ..:: ...;iii;,i ..
A








































,E .n: E, ... .
ult~arsugarcane varieties P.O.J. 2878 on the left and B.H. 10(12) on the right, 15 months
. O talEureka, in the San German Valley. Photographed December 10, 1980.
was 'not experienced with P.O.J. 2878. Even assuming
p auction for the two varieties, P.O.J. 2878 had several
S0over P.O.J. 2725 which gave it the preference. On
i... erect habit of growth, which is general in the area under
% ery little of the cane rots even in gran cultural where
t civy. P.O.J. 2725 is reclining in growth habit, and much
i rots from contact with the ground. P.O.J. 2878 can be
,rested because in addition to erect growth it sheds its leaves
I the hairy leaf sheaths are comparatively unobjectionable.
4|f P.O.J. 2725, on the contrary, tangle when they lodge and
*LOW sheaths are made objectionable by the greater number
leaves near the tops. B.H. 10(12) gave a slightly higher
... did P.O.J. 2878 in the general average of the 1931 crop,
Sto a difference in soils. The very best fields-the more
Yial soils-had been reserved for B.H. 10(12), whereas
78was grown on more compact clay loam soils on which
!nily Uba cane was thought could be grown. This fortunate


Qt


. .. ., ... .. ~. .... .. ...
... ,. ....., ... ... .. ....


.4'





























i !! ,,.,~~~... .......! m ... .. :: ="': .....

S:Va:ety". :t,.. Bie of Mid. d..0s
.m e .i :.~~*, i". N *t !i:.ai~,,ii.i~~

., : .. .........i

o w ..... n.. 6 5A, ..I...... .... .I t
............... ...:;i i :::i .... ..., ........ .






B..S. wig)16 t 17t-moah g pan oto etn- Dcme t W~~-









li,. i .: P .OJ.2 ( l ioa i nxelao a nJfar) '::: i *'
...~ .. ..... :. ." ..:, .. ....:i.. :. .



g-.d. .i l .. ..- .. ... ,. ....





Iie no.N(4 aCcrT, aLciemda Consti-.aa.mii^^- B&-ft
P.0J









P.OJ. 2878 (1 t 1-month .riu eat i ... .a."..::: ,
P. iOo. (0aflU, ...... ....
..~~~~~ l o _. .... ...... ... ... ....... ...... ..
P.O.C m a: gol lh-lt.ll ...... .......... .....
'nipUL~.2 -.













tM oe r e e eP.O.J. tld.. ..... .:......
I / a b y e.: .d..:. ... ... ;. ... ... ...
2mj (W to1k
F~d a noE 0aduida I' tArW NO





.. .... :.
t.he sugt r in m of P.O.J. a c ...... ... .
ani1g from .(5 mm 1), 5 Hedant it, el--o d opipd .:
mpaP.01. 2 r well with tp ta at of Semi.ay):






.superor sugar and. calne productiiols Of ...........
m the c301 (1.e-v5 awe), HSu& O'mI .. peaorb, Mu o





area was harvested la, in Di
supnr yields were not therefore I .... de-a Jhave
P.0U. 313 (1-tM7motb eault Iniur~r
so.R us. .e --------------- ..... ..i.. ...

TheJ s Cs-ugari-mnoanoofPi.Od.J.2878ns6







able npeo ng condition, suc3h t pf QJ. .


cedig haret of the .variety tri .....
.f:. : NI .:..
*' ",.: ; 'i' ::i~li
:"r /^ ; ....,:: :":ii;* l .!
** .il : .. .. '",,::***, !!
:: :: "*:." ":. "* ..... *:; /
N .














S...* ... _
...10 to 12 ...! ... ~o K: I...::. ... ... .... ...

... ...... ........... :th. a:..:E a th: ..... .. .. ................. .....




= p __i f 1
m0
r .4"i88I iiT 40 3
,ydofPOJ.27 W Wiea agiin hs
mu& f te cop w gownon dy o siiiiAiiiiay
Ai43iiiniitr 'fP...2711FOJ.22, -..~
7, an Mayguex 2. -ere hrvesediiniii&
a iaiii
.10m mg iiiiiiit



_of 132 pecn.i a'wee ta aauz7 hc

and u. 1 1)wihgaeol 1pret
ulusepo .127 i h a emnVle
Co. tot&W248 acresdistributd. overi7differen
averW ane poductiniwas63i2itnsipe
i". iii
Im225'veaed6.2tnspr ce n871ace, n

-127-~uhgonfrtemstpr nrce olaeae
1111 ac e o 3 a r s
d iiiiiiiiton n h anGrmnValy ni
Su eirt foiiiiiii7iiiiiBH.10(1). Th
a yiI f4. osprar fcn n2.8ars
&vr~e aol f 32tnspr ceo 3.2 ..
aN 8&I.--h o Nety neirJie fPO
Ouilsissbett vrlwwsilsrtdo
Alrd airet,:O it oma ooiaDvl2 7

-- -- cutr u'aur 0 93,09ar fM yge
'ttew raeo 61tnWt 44preto urs




































































Vdet7 aM d mlta


0O1-
natiom


HE,


Am WI

.1.


- u~q


13% r.oJtm4. H.am' m _a g f*lt)--
B.H. 10(12) ( ivenret of 7 -at).------
B.C. 1*4, ( t aVtt o 6 p ...-.------.-----I
Mmat,_b f,,. Rtooa cut -in Ap*f l93t,
9aito 1.95 lachfla:
OtJ. 7s d i8* isb i3.........

,. l r (1vicmeof 6 pla) ......


U


73


J' i "" ^ ,*:::
..... iB-
*FfleeSK
*atnstw


----- -


.. .. .. .



.. .. ..:: ..
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LetB.. 1.
Z: '

.:. ,:,+ U.!


'flu ,aso t P. U-rawm.1ftWs
AW. d C. m i. a
MnOs P.R. DepL. ;4. &d. ii. la's KiK
'Comkbgabs arnowlag mad uprooted 9toSt W01,ea
Plaft me mor Ic n miss.i 6 .-.-. "*** : ::.*.1 ::- i
* No Aowing o iomed a b sti n at o P."OaT. S ." .:.. ... ,".i
.... .. .. .. ... .. ;. : ..n .. :
.. .. .. .. .. ... ... ... ..... ...
..... .. ......


.. .. .. .. .,....
S.. .;. ^.. ..... "...
.. ":.:" :::


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19







YArJZ" P-0J., 2as nq Pt=To 3aca 35

Awm Variet was su to S.C. 12/4 in SUM" content M"
lzrm&vezqw an7first ratpoeonnosr. The pereenta" Of swar In C&U6
1002) was not markedly bett& thm tia-t of P.O.J-. 2878
,vear. Condifions were, however, satisfactory for Irl"Pening
0 1
being less than -3 inches of, raln.lduriw the 2 montl!B pweding
t of 1930y stM low durIng Wu critical penod in 1931,
2878), as an aver ]i for 9 reg, ated. %o-aere Iats, was defl-
TO I .: :
in cane ro. n to oth S.C. 12/4 and B.H. 10(12).
of superioni Mthe Primavera crop over the nearest.
B.H. 10(1)Y was $.2 tons of cane per acre in tons of
acre the marpn Of s-uperiority was 0.65. In the'first ratoon
m of superiority over.B.H. 10(12): was 5.55 tons of cane per
na of sugar per aqr6 the maxgin of superiority was 0.47.
bo ro 8 P.45J. 2878 produced 1.22 tons more sugar per,
an'dwll. 10.42).
,"a*y trial indicated that hig6r sugar and cane production
intht be secured from.P.O.J. 2878 than from B.H. 10(12),
,=era and first ratoons. HOW-lever it is not definitely
-B.H. 10(12) or P.OJ. 2878 is I; better variety at
AguuTe. Ratoons of P.O.J. 2878 have not'in general made
growth. Oil account of this uncertainty the field super-
I of Central Aguirre- is no longer extending plantings of

GZNIKRAL rMWD JANTMGS ALONG THE SOUTH COAST
central >.O.J. 2878 was tested Mi 1931 on a very
or 7yyZained son under irrigation. Two cuttings were
*Y- suty, IN!,
m holes spaced 76 by 152 ceAtimetors. Two bud cuttings of
2878 and three of D.H. 10(12) were used. The cane produe-
M, 1 acres was 50..5 tons per acrefor P.O.J. 2878, which was

inferior to waiar area of B.H. 10(12) in an adjo'
an acre production of 63.6 tons. The crusher juice anal s
oad lots of 16. to 15 tons showed no significant differences in
quality As shown in table 25.
'7
TAxm 26.-Cr=Awr juice andy-ses on carload Ws of 10 to 19 tons of two varidies
of sugarcane grown at Central Aguirre, 1931

MJu ic a
Yariety D'ato of analym
SUMUM Purity

Peft"t pffe"d
Ireb. 2- --------- ------ ------------- 17.11 97.0
------ -- ----------------------- 111%b. aL ------------ ........ 1& 12 864
JVeb. 4 ----------------------------- 1& 48 9& a
--------------- 1IL24
--------- ------------ B&
------------- 6 -------------------- M 26 8& 9
&L I& is 117
-------------------------
,2* --------- ---------- ------ 1& 11 84.9
00b 2 ---------------- ------ 17.33 87.1
ilk- -------------------- 17.28 St. 2
------------------ ------------------

general field remlt ofihe 1932 arop Of P.G.J. 2878 at Central
are pven in table 26-




.......... ....................... ..................





TABLZ26i--Re8uU# qf augarcam varidy U&M by Luce & Co.j CoWral Avui"e, losst, and "O"My "WOU, Orviv loso-4anuwy low

Normal juice
WOEWY rainba at kW IQpftWW tat a ....
A.M
Vwjotyo aWWM ofte of floldo and dwavtor of moll r d Sugar
one in OWN AUM 114r, Ali= Abet.
M" Purity per SM
V.:
aeft
...........
P.O.J. MN Oft month g -ran cultus* cut in January): ... ..
4 Pliew 2TOW...
Fleld no. (4 sores), Hadends FWda Mereado, InIgated lowland; --------
-------------------------- 90.00. IL" a 7 IIL 46 IQ 34. AugUst. ------- 66 Lit Tif
dIt cl 6"tomber ------------- 29 L 30 L a
culture wt In February):
Z.g. W12) (11-mlbawntih ---------------j--------
October 42 LIM LU
fr 17 &or*, Radenda, Florida Morosido, irrigated too
tolds naL Nw ri 'j!:2
y ---------- ............. TLO 1& 74 8&6 12.10 9.19 NWv I;W_ 0 .............
lowland- a elm ----------- tot I" Lee, 440
POOIJ. 2M OW-month gr" cWttua cut In December): December ----------------- .0 LIO LU 41
Field no. it (9 9" ), Hacienda Altura,,$ brigated lowland; c1sy ------- IL 3 1 4 00 7L 6 L 46 7.80
SM. 10(1* (15-mon gran culture cut In January): Mt
VWd no. 22 (21 aam)$ Hadenda Altars, Iffigated lawbud; dW ..... ILD 1& 88 Kj 1L 3C 02 jameary ------------------- .41 -
4
P.0j. 2M (104-mouth gren cWturs eat in Januory): ------- & i L
VWd no. 61 (11.73 mm), Hacienda Josefs, krtr lowland; sat lam. SL 6 A89 9L9 ILSO a U ......
SM. 10(12) (16-month gran culture cut in Doe A L as As
Irteld no. 02 (11-42 acres), Ractainds Josefa UTIpted WWl=d; sOt loan. SLI I& (d :K9 IL 31 960
P.0j. WO (I th gm caUum cut In UZbor):
Field no. ift(nd'Sons" ), Raciada A t4d lowhn4; loam $L:T ILU, 812 ILOT
& 18 July ------------- C
P.0j. =5 (17-month pon Owtura out Jan -------------- 70-
Add no. 70 (W wm) Becton" A*ox"bo^ hTigated lowland; day 7 low *01
loam ........................... .... .. ......... 7L.2 14629 SLT M X 7.32 ba6oir. ................. ta L
2 x x1i 2) (1 ith gmn tuftma cut In I ............... !k 4A
B&O 10.29 LIO
sj"= (Uknwth gna owtura cut in JanuWY).
m 27 (&W wmb Hadenda Alpmboo, bT*tod lowland; &Y
$7.8 A is sts IL Is & 47 jinvin ......

4J
Tbm ds#A wort bjF I. Ob=6 OvAmIAgvkm SO& I and ta ig A%" &*Ajxv&
SwIs so 14ketWO the i--;- -Watoul"O.




7 7
4
iftARCA, VARM" P.10 28718 IN PC) RICO
-culturs fields$ 4 to I I sacaresp P.,0J. 2878 were ompare.d.
fields, of B.H.'10(1'2). All. fields *erelowlands nder
on; 12-8-4 fertilizer was applied at the: rate of 400 pounds
at 6 weeks after planting and amnicofiium sulphate at.the
JO'400 pouti ds per acre 6 weeks later; at 5,monthi, amm onium
lied at the raV of 400 pounds per acre. Fields
was a &M aD]p
'22, received only the first application. In general the sucrose
was lower.for P.O.J. 2878. In field 8 of HaciWda Altura,
gave a sugar in cane of only 8.45, percent. In the other 4
2878 : either compared well with B.H. 10(12) *in sucrose
-or more than'001nDensated for lower sucrose content by a
eAne production. t superiority in cane production 'was
marked 'at HaeienOi Florida, Mercado, -where P.O.J. 2878
99 tons Of ciLne per acre and 10.34 tons of sugix. per acre as
to 75.9 tons of cane and 9.19 tons of sugar fok B.H. 10(12).
came production. on. 5 fields of P.O.J. 287$ *in gran
`1*as 86.14 -tons Per, acre or nearly 17 tons 'more than from
fields of.BJEL 10(12)...',The average sugar production for
'78 was 807 to= per *c re, or nearly 1 ton more than for B.H.
ootral Mercedita Ponce *in the. 19 2 mnding season, a gran
field trial of PRJ. 2878, was made in comparison with B.H.
'otL heavy chty: soil under irrIgation. The 20.5 acres-of P.O.J.
ed 81.85 tons of cane per acre and 9.339 tons of sugar per
4S Opposed to 75.06 tons of cane, and 8.26 tons of sugar for B.H.
P.O.J. 2878 ripened earlier than did B.H. 10(12). The sygar
P.O.J. 2878 was 11.4 nt, whereas that for B.H. 10(12)
11 percent. This pre vxxunak... ult is encoura, Con-
*ta has certain field"S"' W"I t h an alkaline soil Vheg;e B.H.
is practically. a failure, and P.O.J. 2878 makes a good growth.
ty trial should be -conducted here for a more 'accurate compar-
of P.O.J. 28,78 and B.-H. 10(12).
58 *res I of irTigated pruinavera at -Central' Fortuna, P.O.J.
ed 40.6 tons of cane per acre", nearly 9 tcms more than did
Aorta Of B.11 10(12) in the saxne field'which averaged 31.79 tons.
h time of harvest was normal, March 28, and, the canes Were
old, P.O.J. 2878 gave a low iDurity, 78 9 )ercent, as opposed
82.8 percent for B.M. 10 ?he haxvesting and
puny of (12).
tion to Central Guanica from the field of P.O.J. 2878 of 8.89
tAins Of, cane per acre should be considered; the extra cost of
operations was $12.80 per acre, almost enough to offset the
in -sugar production. The soil was a friable type in which
2878 has selaomgiven a sucrose content.
UPROOTING AS A STORM RISIK WITH P.O.J. 2878
t ,use it is: not anchored very securely by its root system in the
elrop and also because of its very ereet growth habit, P.O.J. 2878
thought...'to be less able to withstand the force of the wind than
o&&r VaXieties. M 1930 a few uprooted stools of P.O.S.2878
obiserved. in the _t and'. it Hormi-
.80"ral cent p IL ion 14 t ALS= 'oenz 'because
rZ Mbegan topUtt'sits of the
ir

















































































An trash remaining after the field rwas bwned ow
by hand from the stooks. The freshly cut c tlks p
counted. Some cane surfaces of both noMal andu
were missed on account of their having been cut bel *&B



"..i.
j*!, A- ..n:pt H ;!
... ..... .
.. ... ...'.
.. .. ..
... ...:. : U U ":.:.. .. .. .... "... :'::,':!,,i i





44T 2M I __"

X4w ite ifraiten omladuroe tos
thmue toanubro.cmso nhepootoofrtn
-fond
30 solsona4-cr ied tFU* mrwhr
MApatn/eetesm/sMiteLiafed h wdt a

9.,prcn adh urotd. adta 2 r8. t






a. i L
difrne Aprnl pooto o h ao
stosrcvrwa"aue Tedveomn fmn
frmteoetre tos f]OJ 88cue
an urs, adro hs esni uhmr eiu
rotncns-eutngfo .wnsom
a 6 eo. etrlQxerprs ht ...27
litefo, potn drn-te iln insomo
19 .Tesonad xed/ o6mlsiln n
of h an ad f h othcat hewna
the Uie ttsWahr BramSnJabe
,terteo-0 ie-A or
ofceta osaca hr 0 ce fPOJ
tiain eotd sfloso heefc fti

)prou fSetoe 91 iln M' ea lwigfo h
4 4 0 ,n u 4 d ia g o t e ca e f B H 0 1 ) a d B C 2 4

































































































































































., F.0.
::" .... .. ...



..: ... ....... .... .. I
* ": ::: ^ a "i ': *: .: .: : "; ::: : '' ..'" ;^ j ...- .......... ... ... :.. N i, : ,ij



















































,ry and makes rapid growth in first ratoons at Julia Farm, Central
hip re, lf no Wultivamon costs. Four months old when photographed, December


Iguirre, a district to'which B.H. 10(12) is very well adapted,
s] it:'a one stubble crop is grown. Hence, in addition to.
cultivation and replanting costs, the cost of roguing, and the
the work. of frequent land preparation must be charged
the cropping of B.H. 10(12). These drawbacks of B.H.
eJ to offset the profuse harrowing habit and somewhat lower
:e ofsWugar in cane of P.O.J. 2878.
PIll^ .."': CIULMVATION COSTS
o osts eand successful ratooving are influenced by position
tWas, whether- erect or spreading; rapidity of growth durin
, |i QN 5. months, and prolficacy or number of canes per s l
on. d u.ri. thekfirst.few, months, PO.J. 2878 has .ian
w' r B. L 10(12). The prolific stooling and early spread,
F .L abit which ase possible low cultivation costs with
.W illustratedd in figure 7. The two stools in front had





....... ......


-,.
::. ""E ::!


..-.....;.
":. "" ..i:;!


."":: / ":
. .. .. : '[;
- '..:E
.. ...".... .
.... ....
i i
J";.,i:

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=7A
L4
4: iiii iii:iiiiiiiiiiii
iiii= = i24iiand 25ii iiiiiiiil'
iiii-iiiiiiiii
:tke atiiraniomivati20i--MW
iiii~iiiiiiiiiwsiiiit"iiiiiii i
:]!N~iiiitiiiiiiiiiii B L Io a
conditionsindiiooiiaii
Rudoell & Co. reports a iw
on ve 10 ww ( irs rtons f PA w
amiiiiiiiiiiiiitWCWx*raflri
iam!o!34!!!o!D.!288!!!r*9&w' Ai-
andiiiiii F'~aPOJ 27 aon
......................................... B H 10 1 ) 5 r 6
Obsrvtinsihihiinirmthiaoveroor 0
on5 iedsofP J.288 aton.Owngto& -
es" yo bu* rwh n upro OMl.
ofrWiiJ 87 j~di eal ~h"Y
P..J 278" ksi n omiht wiiitho
ealysueroitioiiiii2i8 o O
iiiiiiiiiiii t e p ope ty
i"21''T""1"2 ............... 1 o
]]7]
;iiiiii IeW0 w g'i b f
J.3M6iiiiiir n 90O
==i~iiiiiii.
P! J.2 !*tt0~!



P.0 !=Atrto) a mdadWk
not venbroen; wedins, Ma frmCental nr*
P.J 22 (3mot frt ton) Uw He adbal 40------
eiiiii-2wedu ulahrM e w ueu
PA .U ,%;cti&iiw ) t* ~ = a~
'boci-a Iwedn, S
.0Ji K 4 9 --
(T=,~iiii ..... fi t I O M) =!oe d b

koksk I weding
J1
Dat w 1|tdto bs1 L101)o rmP0A ha
andth e -Dxabe ~aaregielliiiitosioiiiiii2"iitheSa e
I oWZiag=Sp~e~m oB1,Q"adal a *-O



UCT1N I CAE GITH WP..I. WS N-811

Consderble bjetionlui ben~m'de P..J.287
to shw dereas m~m Ort




q r

V
VA21M P.Ool.'MTS IN PUZUTO RIOD low
to 3M centitheters for. the sax6e IMI: ber in first MbXMs,.
J a reduction in girth of 6, percent. The average for 250
%N-planted P.0J. 2878 was 3.05. "atimeters, as oppoeW to
U-Metersfor first ratoons, which: was a red etion girth of
Groater differences in rp girt4 t deelop
a rato i Although there wa& little diff birw6e.
the two vari"eties the reduition in girth is more noticeable
P.OJ. 2878 than With B.H. 10(12) as the Javan Taniety'is not
d even in the first cr p, and ge same relative'loss brings it
uemw -than B.H..10(12) to. a thin type of cane.
ES ANO'WSADVANTAGES OF PIO.J. 2878 DURING HARVEST
eosts:include ease of trashing or
Wr of g leaves: and sprouted roots; position of cane, whether
Or g; cane girth-tonnage -per aiere of a given vaidiety; and
Of' f&eaths. P.&J. 2878 tmshes very freely and deve=10
0 Aprouted roots4. 10 canes generally remain erect and re y
led as do those of B.H. 110(12)1.- The straightness, of the-
J. 28'79 f"ilitatesloading -them into carts, and a' hea'vier
se canes can be eked into given volume than is possible
trooked cants Of B H 10(12).'. In mray was, in Puerto
it 6ther equals or exceeds B.H. 10(12) in cane tonnage. In
the pri, c e per tonJor the cane, cutter, -the only handicaps
8 am the sbialler cane girth and hairyleaf sheaths.
ftnes of each variety of grancultura plantings under UT19ae-
Measured atUentral, Mereedita, Ponce, showed that B.M.
Sveraged in. girth &.47 centimeters, P.O.J. 2878, 3.03 centi-
aiW Ma:aguon: 28,- 364 C04timeters. The average cane
W:t of B.H. 10(12) was one sevedath greater thanthat of P.O.J.
Me ereetness U the P.O. J.:,2878 canes, however, is thoiot
h" offset inferi girth. The' erect thand lific
hubit of P.O.J. 2878 is Mustratedin figure 4.,
ompari"n.of 6ase .. f0 50 canes.of each variety in mn
were 'observed :at Isabela. P.O.J. 2878,averaged 7 clinging
per cane,, or : I leaf less than the' average for B.H. 10(12Y.
12/4 av'era ed 11 clinging'leaves per cane, wherou P.O.J. 2725
high S.
RIKDUCBD HARiESTJNG CMTS
,,-Jlirvesting'eostg at Coloso for P.Off. 2878 Are estimated at 10 to
ts 10$'S per ton -of cane than for the other standard varieties now
In the Rm*con district of Central Coloso, P.O.J. 2878 is
at 40percent less than B.H. 10 (12). The harvester makes
motion$ 'Per. given cane weight as less time is consumed in
ating tbe erect straight canes of P.O.J..2878 than'the rec
canes of''B.H. 10(12). M Central Eureka harvesting costs
J. .2878are estimated to 20 percent less per ton than for
.,10(12) or for S.C.- 12/4. At Cantral, Aguirre P.O.J. 2878 doeo
*inaan erect and becomes badl,* tangled oWMg the highloft4
quate, tion:, and somewhat more is *id, for
-Wuced b xdo UTIga
ii Zan,, f or, B. H. 1002). 'Ap= tly 'the "ne cutt=s
AgunTe.emphasize their aveMonto on the led: shesAh&
is rt*Wy far e ihan P.G.J.2
''2878 'ce asier th h est 72511-vild)
on. the Central, 'Aguirre. propertes,,wi -pref#rred,.by cane.: oubWo
.10(12).


































































































































































































.

H I,. .... : : E
. ;. ..: : : ... :" "" :: ." .. ....
....... ..... : *, i :,






SMARCANS VARiETY r.oJ. 2878 IN PUERTO RICO 45
storm, risk due to uprooting with P.O.J. 2878 is I in general, no
than with other varieties. The low sucrose in P.O.J. 2878,
from the development of numerous water suckers on gran
at hasbeen blown over, is more serious than is the rotting
g of cane resulting, from -uprooting. The storm risk is
by close spacing and by planting deep 'in furrows,' or by
P.O.J. 2878 as a Primavera or as a late gran-cWtura crop.
2878 canes become thinner in ratoona, but the proportion
tion is not much greatet than. for B.H. 10(12) canes. Aradical
in -cultivation costs of first ratoons may be secured through
of P.O.J. 28780 This more than offsets the disadvantage of
canes. Where mosaic and dro ht r istance and ability to
& 'u
repeated1Z.are important, as at 8-entr'ea"Is Coloso, Pagan, and
and mi- t San Genrian Valley, P.O.J. 2878 is one of the best
and is r' idl replacing both P.O.J. 2725 and B.H. 10(12).
lap,
'tendency, in lye districts of. Aguh'Te, Pagan, and Isabela, of
'2878 to arrowwofusel even in primav gs, is -more
by its rapid. growtK, prolific tooling habit, and high cane
Unlike P.O.J. 2725, P.O.J. 2878 arrows about Novem-
and growth is not intetrupted eqly enough to cause a serious
in primavera or first ratoons.
ed defeeation will., not give serious trouble unless P.O.J.
M wanted ektansively on the poorly, drained lowlands and on
vial soils to which it is not adapted.
ages of P.D.J. 2878 are prolific stooling.habit; rapid growth;
cane production; drought resistance; resistance to mosaic;
of harvest, due to erect growth, and the free shedding of the
ability to recover after, being flooded; and ratooning power.

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UNIVERSITY OF FLORIDA
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