THICK SEEDING OF MILO IN THE SAN AX To Mo REGION. i 
That the wider spacing in the rows increased the number of pend- 
ent heads is' also brought out. The percentage of pendent beads 
increased from 0.6 per cent in the plat not thinned to l!> per cent in 
the plat where the plants were spaced to 2-1 inches apart. 
It is evident that the yields from the plats in which the plants 
were spaced 12, 18, and 24 inches apart in the 191 1 experiments were 
much lower than would be expected if the midge damage was uni- 
form in the heads of the main stalks. Observations made at the 
time the heads were maturing showed that the damage by this 
insect in the three plats mentioned was much more severe than on 
the plats where the plants were spaced less than 12 inches apart in 
the row. It should be understood that this docs not refer to the 
tillers or branches, for in no case, even on the plats where the plants 
were closely spaced in the row, did over 5 per cent of the seed set. The 
four rows of the plat where the plants were spaced 12 inches apart 
were located beside the four rows of the plat thinned to 2 inches 
apart, so that they were as nearly as possible on an equal footing, 
and there was no apparent cause for a greater midge infestation in one 
than in the other. The date of flowering of the main stalks was 
practically the same in both cases. 
The effect of varied spacing on the yield and the production of 
tillers and branches is shown graphically in figures 1 and 2. 
EFFECT OF ROW WIDTH AND SPACING ON TILLERING AND HEAD PRODUCTION. 
On May 15, 1913, counts were made of the number of stalks per 
row and per plant on the plats already discussed. These counts 
were made when the plants were about 18 inches high. At harvest 
time the number of heads per plant on the same plants counted May 
15 was determined. The results of these counts are given in Table IV. 
Table IV. — Stalks and heads per row and per plant on May 15 and at harvest time on 
nine plats of milo planted at different widths and spaced differently at the San Antonio 
Experiment Farm in 1913. 
Spacing . 
Number per row. 
Number per plant. 
Distance between rows. 
Plants. 
Stalks, 
May 1.",. 
Heads 
at 
harvest 
time. 
Stalks, 
May L5. 
Bead 
al 
harvest 
time. 
Inches. 
0) 
2 
5 
8 
12 
18 
5 
5 
5 
895 
833 
439 
293 
237 
1.57 
339 
405 
350 
.'.Mil 
2,357 
2,198 
l.'.ll 
1,504 
L,050 
L,950 
l . 573 
i ,753 
1,169 
L,209 
1 . 1 .v. 
L,066 
1,034 
959 
899 
879 
2.9 
2.8 
5.0 
6.3 
6.7 
5.7 
3.9 
5.0 
1.3 
1.5 
3.6 
4.3 
- 
Not thinned. 
