SUGARCANE VARIETY P.O.J. 2878 IN PUERTO RICO 
11 
In 1932 sugar yields were very low at Central Constancia and the 
juices of P.O.J. 2878 were clarified with great difficulty. It was 
found necessary to grind cane of other varieties at the same time as 
that of P.O.J. 2878; consequently, adjoining fields were harvested 
simultaneously, and sugar yields of the different varieties are com- 
parable. The lowlands of both Centrals Carmen and Constancia were 
flooded by the September 1931 hurricane, and most of the lowlands 
were under water for nearly a week. 
At Cambalache and at Constancia a 12-6-5 fertilizer at the rate of 
600 pounds per acre was applied at 2 months, and ammonium sul- 
phate at the same rate was applied at 4 months. At Carmen 400 
pounds of each of the same kind of fertilizers was applied. 
Gran cultura on friable alluvial soils. — The 1932 data of gran cultura 
on the more friable alluvial soils are grouped in table 7. 
Table 7. 
■Results of sugarcane variety tests on friable alluvial soil at Centrals 
Carmen and Plazuela, 1982 
Variety, culture, size of field, and character of soil 
P.O.J. 2878 (16-month gran cultura cut in December): 
Field no. 2 (16.55 acres), Carmen, irrigated well-drained 
lowland loam 
B.H. 10(12) (16-month gran cultura cut in January): 
Field no. 3 (19 acres), Carmen, irrigated well-drained low- 
land loam to silt loam 
P.O.J. 2878 (16-month gran cultura cut in January): 
Field Kailan (20 acres), Luisa, 1 irrigated lowland loose 
loam 2 
P.O.J. 2878 (17-month gran cultura cut in January and Feb- 
ruary): 
Field Tetanos (6 acres), Catalana, 1 unirrigated lowland 
loose loam 2 
P.O.J. 2878 (19-month gran cultura cut in December): 
Field Palo Dan (10 acres), Catalana, irrigated lowland loose 
sandy loam 2 
Acre 
yield 
of cane 
Normal juice 
analyses 
Sugar 
in cane 
Sucrose 
Purity 
Tons 
48.00 
Percent 
11.59 
Percent 
79.80 
Percent 
8.39 
67.00 
10.72 
75.50 
7.88 
77.28 
11.58 
77.70 
8.31 
95.29 
11.80 
78.10 
8.50 
108. 50 
11.99 
78.90 
8.28 
Avail- 
able 96° 
sugar 
per acre 
Tons 
4.030 
5.280 
6.420 
8.100 
8.980 
1 Luisa and Catalana belong to Central Plazuela. 
3 Soils so designated by the field superintendent of Central Plazuela. 
At Central Carmen P.O.J. 2878 produced 1.25 tons of sugar less 
than did B.H. 10(12) on a friable loam with good drainage. Four 
large fields, totaling over 50 acres, of P.O.J. 2878 on poorly drained 
friable alluvial soil at Central Plazuela gave sugar in cane ranging 
from 8.3 to 8.7 percent. Friable alluvial soils along the north coast 
are apparently unsuited to the cultivation of gran cultura P.O.J. 2878. 
Gran cultura on upland soils. — The results of the 1932 gran-cultura 
tests with P.O.J. 2878 on upland with good surface drainage and 
without irrigation are given in table 8. 
