42 
I'.i i-i.l -i IN 35, PI BRTO Hicn EXPERIMENT STATION 
24 and 25 cane-, respectively. Hie average count for 50 stools 
taken at random was 20 canes. The BDacing was 135 centimeters 
between rows with two 3-bud cuttings planted ever? 90 centimeters 
in the row. B.I I. 10(12) pave only about half as many canes under 
similar conditions and took a month longer to close in. 
Russell 6 Co. reports a Bavingin cultivation costs of $3.50 per acre 
on over 100 acres of first ra toons of P.O.J. 2878 compared with a like 
area of B.H. 10(12). Central Coloso reports nearly double this 
saving on 314 acres of P.O.J. 287S first ratoons. At ( Vntrals Coloso 
and Eureka P.O.J. 2878 ratoons required only 2 or 3 hand weedings 
and B.H. 10(12) 5 or 6. 
Observations which confirm the above reports are given in table 29 
on 5 fields of P.O.J. 2878 ratoons. Owing to a somewhat more rapid 
early growth and a superiority of about 150 more canes per 31 meters 
of row P.O.J. 2878 closed in nearly 1 month earlier than B.H. 10(12). 
P.O.J. 2878 also closed in somewhat earlier than P.O.J. 2725. The 
early growth superiority of P.O.J. 2878 to P.O.J. 2725 is shown in 
figure 1. The canes are 5-month-old gran-cultura plantings grown at 
Hormigueros on the property of Russell & Co. 
Table 29. — Data on closing in of sugarcane varieties in April 1932 
Variety, culture, treatment, and locality 
Canes per 
31 meters 
(average 
of two 
counts) 
Average 
height to 
leaf tip 
of 50 
primary 
shoots 
Dis- 
tance 
clear to 
vision 
Closed in 
P.O.J. 2878 ' (33^-month first ratoons), no treatment recorded, 
Nu mber 
570 
405 
619 
431 
382 
290 
554 
440 
660 
479 
Mtttrs 
Feet 
20 
40 
15 
30 
45 
Almost. 
Filial Amor. 
B.H. 10(12) (3^-nionth first ratoons), no treatment recorded, 
No. 
Filial Amor. 
P.O.J. 2878 (3H-™onth first ratoons), no treatment recorded, 
Filial Amor. 
B.H. 10(12) (3H-month first ratoons), no treatment recorded, 
Filial Amor. 
P.O.J. 2878 (4-month first ratoons), no treatment recorded, 
Central Pagan, Anasco. 
B.H. 10(12) (4-month first ratoons), no treatment recorded, 
Central Pagan, Anasco. 
P.O.J. 2878 (2J4-month first ratoons), trash lined and banks 
1.77 
1.74 
1.74 
1.66 
Almost. 
No 
Almost. 
No. 
not even broken; 2 weedings, Julia farm, Central Eureka. 1 
P.O.J. 2725 (2H-month first ratoons), trash lined and banks 
not even broken; 2 weedings, Julia farm, Central Eureka. 
P.O.J. 2878 (3-month first ratoons), trash lined and banks 
Do. 
Yes. 
broken; only 1 weeding, Filial Amor. 
P.O.J. 2725 (3-month first ratoons), trash lined and banks 
Almost. 
broken; 1 weeding. 
1 Data were collected from plats of B.H. 101 12) or from P.O.J. 272") which adjoined those of P.O.J. 2878, 
and the comparable data are given below those of P.O.J. 2>7n from the same respective field. 
» Central Eureka gives 5 or 6 weedings to B.H. 10(12) and only 2 or 3 to P.O.J. 2878. 
REDUCTION IN CANE GIRTH OF P.O.J. 2878 IN STUBBLE CROPS 
Considerable objection has been made to P.O.J. 2878 because it is 
thought to show pronounced decrease in cane girth in ratoons. To 
substantiate this claim, cane diameters in 10 fields in which both 
P.O.J. 2878 and B.H. 10(12) of the same age and treatment were 
growing — 5 fields of fall-planted cane and 5 fields of first ratoons, 
respectively, were measured. All canes, water suckers excepted, of 
a given number of stools were measured. The average cane girth of 
250 canes of B.H. 10(12) was 3.28 centimeters in the fall-planted crop 
