SUGARCANE VARIETY P.O.J. 2878 IN PUERTO RICO 
17 
but both varieties were inferior in percentage of sugar in cane. The 
higher cane tonnages of P.O.J. 2878 and Mayaguez 28 were due 
largely to their prolific stooling habit. These varieties averaged 15 
canes per stool, about half again as many as S.C. 12/4 and Mayaguez 
42. 
All varieties, except B.H. 10(12) and Mayaguez 28, were significantly 
inferior to P.O.J. 2878 in sugar production. Owing to higher sucrose 
contents, these three leading varieties produced about 0.75 ton more 
sugar per acre than did either P.O.J. 2725 or P.R. 826. This is shown 
graphically in figure 3. 
S.C. 12/4 was decidedly inferior in production to P.O.J. 2878. 
Considering the advantage of the latter, due to mosaic resistance and 
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Figure 2.— P.O.J. 2878 compared well with Mayaguez 28, P.O.J. 2725, and B. H. 10(12) in cane production 
at Coloso. The cars were arranged in the same order as were the plats. Each car carried the cane of a 
j4o-acre plat. Mayaguez 28, P.O.J. 2878, and B.H. 10(12) showed little difference in either cane production 
or sucrose content. 
prolific stooling, S.C. 12/4 is hardly likely to be able to compete with 
it in ratoon crops. 
Quality of juice. — The 12 varieties fall into two groups for quality 
of juice. Eight (B.H. 10(12), S.C. 12/4, P.O.J. 2878, and the 5 
Mayaguez varieties nos. 3, 7, 28, 42, and 49) had over 17 percent of 
sucrose; and 4 (P.O.J. 2725, P.R. 801, P.R, 826, and P.O.J. 2714) 
had inferior juices ranging from 14 to 15.5 percent of sucrose. The 
duration of the crop, 18}£ months, and late harvest with 3 months of 
dry weather preceding (table 3) favored ripening. Both Mayaguez 
nos. 42 and 49 were consistently superior to B.H. 10(12). Mayaguez 
28 was, except on plat no. 8, almost identical with B.H. 10(12) and 
P.O.J. 2878 in percentage of sugar in cane. Mayaguez nos. 3 and 7 
32912°— 34 3 
