16 



BULLETIN 279, U. S. DEPARTMENT OF AGRICULTURE. 



The yields from the alternate blocks of section B shown in Table VI 

 represent more nearly what may be expected under field conditions. 

 The results are similar to those obtained from the alternate rows in 

 section A, though the differences are less extreme. The total yields 

 from the wide-spaced rows ranged from 10.3 to 17 pounds and those 

 from the single-stalk rows from 17.2 to 25.2 pounds, the minimum 

 yield from the single-stalk rows being practically the same as the 

 maximum yield from the wide-spaced rows. These results are pre- 

 sented graphically in figure 3. At the time the first picking was 

 made, August 11, 37 per cent of the crop in the wide-spaced rows was 



30 



35 



£ /o 



■"J 



SI 



/?OM/ 



^ <*> lo N 

 <Vl c\j (\j (\j 



A/UMBCRS 



») 



Fig. 2. — Diagram showing the yields from single-stalk and wide-spaced rows of Acala cotton in section 

 A, San Antonio, Tex., in 1914. Wide-spaced rows represented by double lines, single-stalk rows by 

 heavy lines. 



harvested, as compared with 47 per cent of the crop in the single- 

 stalk rows, the latter yielding 93 per cent more seed cotton. The 

 second picking from the single-stalk rows was 33.7 per cent greater 

 than that from the wide-spaced rows. The increase in the total 

 yield of individual rows in any single-stalk block over the correspond- 

 ing rows in the preceding wide-spaced block ranged from 15 to 119 

 percent, the average being 56.1 percent. 



Reference to figure 3 will show that in most cases the inside rows 

 of wide-spaced blocks and tin 4 outside rows of single-stalk blocks 

 yielded more than the other two rows of the same blocks. This 



