16 
BULLKIIX 35. PUERTO Hico EX PE HIM K XT STATION 
Tamli. 11 
ReitdU of gran-ctdiura sugar cam variety teste on irrigated silly day to 
clay lowland at Central Coloeo Continued 
\<Ki: flBLD OP C \m: 
Yields for plat group 
Aver- 
age 
ton- 
nage 
Increase 
(+)or 
decrease 
(-)in 
tonnage 
general 
average 
Variety 
So. i 
So. 2 
So. 8 
No. l 
No. 5 
No. 7 
No. 8 
D, 
M B 
14. BO 
36. K) 
47.00 
23. 50 
32.60 
3& 70 
»:. Ml 
35.40 
36. 70 
20. 90 
S3. 50 
51.20 
41.60 
52.06 
3fl K) 
57.70 
30 BO 
N 7(1 
43. to 
33. 30 
2i B0 
SO 40 
17.70 
36. 10 
S6.60 
39. 10 
54. 70 
50.70 
ll 30 
18.60 
49 (X) 
30. 30 
I 1 .- 20 
63. 70 
44. tt) 
is. 70 
36. 70 
64.80 
43. io 
10. 10 
61.40 
30. 10 
16. to 
20. 60 
52 (Xi 
62. 10 
3ft 10 
17. 10 
30. M) 
48.80 
47. 40 
SO 20 
37. 06 
02. 60 
6L40 
54.60 
38.00 
54. (X) 
18. 20 
32. 90 
1ft 10 
33. (XJ 
IO 10 
41. 10 
31. 10 
42. 20 
24. SO 
44.40 
13. B0 
«. (XJ 
12 20 
48.60 
20. 10 
40.37 
40.12 
50.35 
43. 93 
29.07 
50.50 
5071 
49. 93 
32.80 
51.00 
-2.44 
-2.69 
+7.54 
-4.54 
+ 1.12 
+ 13.74 
+7.69 
+7.90 
+7.12 
+ 10.01 
+8.19 
M 7 
M.28 
M \1 
m a 
11.80 
27.80 
48.40 
45.90 
36. (X) 
50.30 
2ti. 20 
4fi. 70 
P.O.J. 2714 
P.O.J. 2728 
.... 
P.O.J. 2878 
S.C. 12 1 
Mil 10(12) 
P.R.801 
P.R.826... 
— - 
Average 
39.45 
42.80 
42. 62 
47.67 
43.10 
49. 51 
37.51 
40.96 
3 The probable error of the difference between the average acre yield of cane of any 2 varieties= ±1.58 
tons. 
Table 12. — Summary of results of gran-cultura sugarcane variety tests on irrigated 
silty clay and clay calcareous phase, at Central Coloeo, 19SCh 
Variety 
Acre yield 
of cane 2 
Normal juice 
analyses 
Sugar in 
Sucrose 
Purity 
Percent 
Percent 
Pt ret nt 
17.34 
84.89 
13.42 
17.24 
85. B2 
13.41 
17.45 
85.13 
13.52 
17.81 
87.39 
13.95 
15.47 
83.39 
LL87 
15.31 
83.89 
11.81 
17.25 
84. 76 
13. 21 
17.76 
86.94 
13.90 
17.05 
83.90 
13.11 
17. 12 
85.48 
13.30 
15.52 
82.32 
11.67 
14.31 
76.26 
10.48 
Available 
96° sugar 
])er acre 3 
Tons of 
cane i>er 
ton of 
sugar 
P.O.J. 2878.. 
Mayaguez 28 
B.H. 10(12).. 
Mayaguez 49 
P.O.J. 2725.. 
P.R. 826 
Mayaguez 3. 
Mayaguez 42 
Mayaguez 7. 
S.C. 12/4 
P.R.801 
P.O.J. 2714.. 
Tons 
50. 71 ±3. 89 
.50. 35±3. 36 
49. 93±3. 21 
43. 93±5. 17 
50. 50±4. 15 
51.00±4. 34 
40. 37±5. 07 
38. 27±6. 32 
40. 12±5. 04 
38. 19=1-3. 81 
32. 80±5. 00 
29. 07±4. 89 
Tons 
824 ±0. 492 
705± .481 
755± .503 
122± .562 
004± .665 
014± .478 
330± .677 
313± .880 
275± .561 
086± .521 
848± .724 
065± .638 
Tons 
7.45 
7.44 
7.30 
7.17 
8.42 
8.47 
7.57 
7.19 
7.62 
7.52 
8.57 
9.54 
i Planned and the cane harvested through the cooperation of Francisco Colon Moret, formerly field super- 
intendent Central Coloso, and Eerminino Acosta. of the Insular Department of Agriculture, and Alfonso 
Dozal, of Central Coloso. 
J The probable error of the difference between the average tonnage acre yields of sugar of any 2 
varieties= ±0.219 ton. 
3 The probable error of the difference between the average acre yield of cane of any 2 varieties= ±1.58 tons* 
In cane production no significant differences were observed in 
P.O.J. 2878, B.H. 10(12), P.O.J. 2725, Mayaguez 28, and P.R. 826. 
All produced approximately 50 tons of cane per acre and were signifi- 
cantly superior to S.C. 1274, P.O.J. 2714, P.R. 801, and Mayaguez 
nos. 3, 7, 42, and 49. P.O.J. 2714 was a failure, producing approxi- 
mately 20 tons per acre of cane less than did P.O.J. 2878. The 
superior cane production of P.O.J. 2878, Mayaguez 28, and B.H. 
10(12) is illustrated in figure 2. Each car carried the cane production 
of a ^o-acre plat. The 1 cars were arranged in the same order as were 
the plats. P.O.J. 2725 and P.R. 826 also gave good cane production, 
