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.l 
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 
Difference 
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 
