SUGARCANE VARIETY P.O.J. 2878 IN PUERTO RICO 
29 
Table 21. — Results of sugarcane variety tests conducted by Russell & < '<>■ "/ ( 'entral 
Pagan, Anasco, 1932 — Continued 
Variety, culture, size of field, and character of soil 
P.O.J. 2878 (17-month gran cuitura cut in April): 
Field T-16 (21.75 acres), Hacienda Trinidad, unirrigated 
undulated land 
P.O.J. 2878 (17-month gran cuitura cut in April): 
Field T-17 (18.3 acres), Hacienda Trinidad, unirrigated 
undulated land - 
P.O.J. 2878 (13-month primavera cut in February): 
Field E-ll (15.5 acres), Hacienda Trinidad, irrigated un- 
dulated land 
B.H. 10(12) (13-month primavera cut in March): 
Field E-7 (11.9 acres), Hacienda Trinidad, irrigated undu- 
lated land 
P.O.J. 2878 (17-month gran cuitura cut in February): 
Field P-3 (27.3 acres), Hacienda Trinidad, irrigated low- 
land 
B.H. 10(12) (17-month gran cuitura cut in February): 
Field P-2 (12.9 acres), Hacienda Trinidad, irrigated low- 
land 
P.O.J. 2878 (16-month primavera cut in March): 
Field G-4 (30 acres), Hacienda Trinidad, irrigated undu- 
lated land 
P.O.J. 2878 (16-month primavera cut in May): 
Field P-5 (12 acres), Hacienda Trinidad, irrigated undu- 
lated land 
P.O.J. 2878 (18-month gran cuitura cut in December): 
Field A-26 (11.25 acres), Hacienda Dolores, irrigated un- 
dulated land _ 
Acre 
yield 
Normal juice 
analyses 
of cane 
Sucrose 
Purity 
Tons 
34. 68 
Percent 
15.85 
Percent 
81.86 
32.24 
15.45 
79.94 
37.97 
15.77 
80.21 
25.95 
17.38 
85.36 
67.27 
12.14 
75.81 
76.39 
13.06 
79.48 
43. 95 
14.90 
80.68 
48.67 
14.85 
82.66 
49.56 
13.42 
80.02 
Suprar 
in cane 
Avail- 
able 96° 
sugar 
per acre 
Percent 
12.07 
11.61 
11.86 
13.50 
8.85 
9.76 
11.29 
11.36 
Tons 
4. 185 
3.743 
4.503 
3.503 
5.953 
7.455 
4.961 
5.528 
10.11 5.010 
As shown in table 21, the purity of gran-cultura P.O.J. 2878 in 
no instance exceeded 82 percent. Tn the only primavera fields directly 
comparable in age and time of harvest, fields E-ll and E-7 at Haci- 
enda Trinidad, the sugar in cane of B.H. 10(12) was 13.5 percent, 
and that of P.O.J. 2878 only 11.86 percent, P.O.J. 2878 more than 
offset this, however, by its markedly superior cane production, averag- 
ing 37.97 tons per acre, or 12 tons more than did B.H. 10(12). 
A preliminary variety trial on two K-acre plats of high land per 
varietv at Hacienda Trinidad of Central Pagan was harvested Febru- 
ary 8 to 9, 1932, when 18 months old. P.O.J. 2878 yielded at the acre 
rate of 59.2 tons of cane, or 0.8 ton less than did P.O.J. 2725. In sugar 
production per acre, however, there was a marked difference, 7.077 
tons for P.O.J. 2878, and 5.612 tons for P.O.J. 2725. Throughout 
the island, P.O.J. 2878 has given a higher percentage of sugar in cane 
than has P.O.J. 2725 in variety trials, as well as in the less reliable 
comparisons based on miscellaneous data on adjoining fields. These 
favorable results indicate that more extensive variety trials with P.O.J. 
2878 should be made on upland soils in the Anasco Valley. 
GRAN-CULTURA TRIAL AT FILIAL AMOR 
In the variety trial conducted on silty clay by the Insular Depart- 
ment of Agriculture in cooperation with Russell & Co., P.O.J. 2725 was 
used as the control and grown on 15 plats systematic ally distributed. 
A 12-8-4 fertilizer, at the rate of 400 poimds per acre, was applied to 
the crop in September 1930, and ammonium sulphate, at the rate of 
350 pounds per acre, in December 1930. Irrigation water was applied 
but not measured in January, February, and March 1931. The 
results are shown in table 22. 
