EXPERIMENTS WITH SINGLE-STALK COTTON CULTURE. 



23 



increase in yield probably would have been greater had the stanp 

 been such as to allow the application of single-stalk culture through- 

 out the entire length of the rows. 



The Green experiment. — Mr. L. F. Green obtained a very poor stand 

 in his field of Cleveland Big Boll cotton and it was possible to apply 

 single-stalk culture to only a few places in each of the rows reserved 

 for this method. Owing to the fact that the land had been heavily 

 fertilized the plants grew very rank, and when the parts of the rows 

 to which single-stalk culture was applied were thinned the plants had 

 attained a point in their development a little beyond that at which 

 they might have been thinned to the best advantage. The data per- 

 taining to the time of thinning, the condition of the plants at thin- 

 ning time, and the spacing are the same as those reported for Mr. 

 Wright's experiment except that the plants were a little taller and 

 had 2 or 3 more leaves. 



The yields from the only picking made, as reported by Mr. Green, 

 are given in Table XVII. 



Table XVII. — Row yields obtained in a single-stalk culture experiment with cotton con- 

 ducted in 1915 by L. F. Green, Ingold, N. C. 



Row. 



Yield of seed cotton 

 (pounds). 



Row. 



Yield of seed cotton 

 (pounds). 



Single 

 stalk. 



Old 



method. 



Single 

 stalk. 



Old 



method. 



No. 1 



80 

 80 

 75 

 76 

 82 

 83 

 70 

 77. 



71 

 80 

 68 

 78 

 75 

 80 

 75 

 65 



No. 9 



75 

 75 

 77 



65 



No. 2 



No. 10 



65 



No. 3 



No. 11 



60 



No. 4 



Total 





No. 5 : 



850 

 68 

 9 



782 



No.6 







No. 7 



Increase per cent- . 





No. 8 









Table XVII shows a total increase for single-stalk culture of 9 per 

 cent, which probably would have been greater had the stand been 

 such as to permit the application of single-stalk culture to the entire 

 length instead of to only a few parts of each row. 



DUPLIN COUNTY. 



The Sanderson experiment. — The experiment conducted by Mr. 

 L. M. Sanderson, at Warsaw, was the only one in Duplin County. 

 He planted Cleveland Big Boll cotton on April 25 at the rate of 3 

 pecks per acre, and a fair stand was obtained in spite of unfavorable 

 weather. Mr. G. S. Meloy, of the Bureau of Plant Industry, directed 

 the thinning of the single-stalk rows and reported that it was com- 

 pleted in good time. The old-method rows were thinned on June 6, 

 when the plants were 3 to 4 inches high and had 3 to 4 leaves. The 

 single-stalk rows were thinned on June 17, when the plants were 8 



