EXPERIMENTS WITH SINGLE-STALK COTTON CULTURE. 7 
better, but, as Table II shows, significant differences in yield were 
obtained. Only the total yields of each picking were reported. 
Table II. — Yields, obtained in a single-stalk culture experiment with cotton conducted 
in 1915 by John Hebert, Ventress, La. 
Spacing system. 
Yield of seed cotton (pounds). 
First 
picking. 
Second 
picking. 
Total. 
Single-stalk rows, thinned June 6 . 
Old-method rows, thinned May 25 
Difference: 
Pounds 
Per cent 
50.- 
125 
32.9 
350 
300 
50 
16.7 
855 
175 
25.7 
Table II shows single-stalk culture to have had a marked advan- 
tage from the standpoint of earliness as well as of total yield. Single- 
stalk culture yielded 32.9 per cent more cotton at the first picking 
than the old method, and 16.7 per cent more at the second picking. 
This gave an increase in total yield of 25.7 per cent. 
The Robillard experiment. — Mr. EobiUard planted Bank Account 
cotton on May 6, using only 15 pounds of seed per acre. Only a fair 
stand was obtained; the seedlings were somewhat scattered and in 
some rows there were short skips. This made it impossible to 
apply single-stalk culture to the best advantage. Moreover, Mr. 
Robillard spaced the plants in the single-stalk rows farther apart 
than was recommended. There were 20 rows in the experiment, 
the two systems of culture being compared in alternate rows. 
The old-method rows were thinned on May 19, when the plants 
were 4 to 5 inches high and had 2 to 3 leaves; the single-stalk rows 
were thinned on June 8, when the plants were about 10 inches high 
and had 7 to 8 leaves. The plants in the old-method rows were 
spaced 18 to 24 inches apart, and in single-stalk rows 10 to 12 inches. 
Three pickings were made in this experiment, and the yields are 
reported in Table III. Only the total yields of each picking were 
reported. 
Table III. — Yields obtained in a single-stalk culture experiment with cotton conducted 
in 1915 by Alfred Robillard, Ventress, La. 
Yield of seed cotton (pounds). 
Spacing system. 
First 
picking. 
Second 
picking. 
Third 
picking. 
Total. 
Single-stalk rows, thinned June 8 
226 
177 
211 
178 
169 
134 
606 
Old-method rows, thinned May 19 
489 
Difference: 
Pounds 
51 
28.8 
33 
18.6 
35 
26.1 
117 
Per cent 
23.9 
