EXPERIMENTS WITH SINGLE-STALK COTTON" CTJLTTJRE. 



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 



505 

 380 



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. Robillard 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. Ordy 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. 





226 



177 



211 



178 



169 

 134 



606 





489 



Difference: 





51 



28.8 



33 

 18.6 



35 

 26.1 



117 





23.9 











