24 



BULLETIN 526, U. S. DEPARTMENT OF AGRICULTURE. 



to 10 inches high and had 6 to 7 leaves. The plants in the former 

 rows were spaced 15 to 18 inches apart, those in the latter 4 to 6 

 inches. 



There were 20 rows in the experiment, and the two systems of 

 culture were compared in pairs of rows — that is, two single-stalk 

 rows alternated with two old-system rows, making 5 pairs of rows 

 for each system. Only one picking was made, and this was delayed 

 until late in November, at which time, it was reported, all the bolls 

 were open. Whether much cotton had fallen to the ground mean- 

 time can not be stated; but it is safe to assume that some had fallen, 

 especially from single-stalk rows, which probably were earlier than 

 the others. The row yields, as reported by Mr. Sanderson, are given 

 in Table XVIII. 



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

 conducted in 1915 by L. M. Sanderson, Warsaw, N. C. 



Row. 



Yield of seed cotton 

 (pounds). 



Row. 



Yield of seed cotton 

 (pounds). 



Single 

 stalk. 



Old 



method. 



Single 

 stalk. 



Old 



method. 



No.l 



91 

 69 

 87 

 74 

 68 

 68 

 73 



84 

 76 

 58 

 72 

 83 

 52 

 66 



No.8 



95 

 89 



51 



74 



No.2 



No. 9 



85 



No. 3 



No. 10 



72 



No 4 



Total 





No. 5 



765 

 43 

 6 



722 



No. 6 







No. 7 



Increase per cent . . 









Table XVIII shows that in 7 of the 10 instances single-stalk cul- 

 ture yielded more than the old method, the differences varying from 

 2 to 21 pounds per row. In the remaining three instances the old 

 method gave greater yields, varying from 7 to 21 pounds per row. 

 The total yield favored single-stalk culture by 43 pounds, or 6 per 



cent. 



CRAVEN COUNTY. 



Two experiments were conducted in Craven County — one by J. L. 

 Roper, at Riverdale, and another by B. C. Peterson, at Vanceboro. 



The Roper experiment. — Mr. W. M. Laughinghouse, superintendent 

 of the Rockwell Farm of J. L. Roper, at Riverdale, planted cotton on 

 May 11 in rows 4 feet apart on flat land, using 1 bushel of seed per 

 acre. A good stand was secured, but dry and cold weather during 

 May and early June checked growth materially. No definite infor- 

 mation concerning the dates of thinning and the condition of the 

 plants when thinned is available, but the plants in the old-method 

 rows were spaced at 20 inches in the row as compared with 2 to 6 in 

 the single-stalk rows. The thinning was done by Mr. Laughinghouse 

 as suggested by Mr. J. W. Sears, county agent. It was not practi- 



