1086 
Journal of Agricultural Research 
Vol. XXVIII, No. n 
In the first four rows the plants were spaced 12 inches apart, the next four 
2-inch, the next four 6-inch, and the next four 2-inch spacings were used, repeated 
once, making eight 4-row blocks in all. Thus blocks No. 1 and 5 were thinned 
to 12 inches apart, blocks No. 3 and 7 to 6 inches, and blocks No. 2, 4, 6, and 
8 to 2 inches. 
As in the 1922 test, this experiment was irrigated without reference to the 
different spacings. On one or two occasions, however, the whole test suffered 
somewhat for lack of water as the supply was not quite adequate during the hot 
summer months. The majority of the plants grew to be from 4^£ to feet 
in height. 
Table II .—Mean yield of 25 feet of row length in each block 
Block 
No. 
Spacing 
Pounds 
1. 
2-inch_________ 
4. 225±0.071 
4.051 ± .083 
4.099± .101 
4.059± .118 
4.181 db .067 
2. 
6-inch_____ 
3. 
2-inch_______ 
4. 
12-inch_ _ .. . ._ _ ... 
5. 
2-inch.... 
Yields of the first, second, and total pickings are given by sections of rows, 
total length of rows, and 4-row block totals in Table III. Row yields of the 
first and second picking by sections and total length of rows are shown graphically 
in figure 2. The first picking was made September 21 to 24, which was early 
enough to show to some extent the relative earliness of the different spacings. 
The second picking was made December 20 and 21. 
Nine direct comparisons are possible between the 2- and 12-inch spacings by 
comparing the yields of 12-inch spaced plants in each of the three sections of 
blocks No. 1 and 5 with the yields of 2-inch spaced plants in each of the 3 sec¬ 
tions of blocks No. 2, 4, and 6 which are adjacent to the 12-inch blocks. 
In the first picking the 2-inch spaced plants led in only five of the nine com¬ 
parisons, but in the second picking the 2-inch spaced plants led in eight of the 
nine comparisons. In total yield the 2-inch also led in eight of the nine com¬ 
parisons. 
Twelve direct comparisons are possible between the 2- and 6-inch spacings by 
comparing the yields of 6-inch spaced plants in each of the three sections of 
blocks No. 3 and 7 with the yields of 2-inch spaced plants in each of the three 
sections of blocks No. 2, 4, 6, and 8, which are adjacent to the 6-inch blocks. 
In the first picking the 2-inch spaced plants led in only five of the twelve 
comparisons and in one comparison the yields of adjacent 2- and 6-inch blocks 
were identical. In the second picking the 2-inch spaced plants led in ten, and 
in the total picking in nine of the twelve comparisons. 
