THICK SEEDINO OF MILO IN T11K SAN ANTONIO KECJION. 
15 
Wider spacings the total aumber of branches and tillers is about equal 
to the total number of tillers alone in 1913. In the close spacing there 
was a decidedly smaller number of tillers and branches combined 
than in 1913. This variation is unquestionably due to the rather 
unusual weather conditions during the months of April and May, 
1914. The weather conditions for the first six months of each year 
and the averages, as given by the United States Weather Bureau for 
a number of years, are shown in Table VIII. 
Table VIII. — Aspect of the sky, temperature, and rainfall at San Antonio, Tex., for 
the first six months of the years 1913 and 1914, showing also averages for stated years. 
Aspect of sky. 
Temperature (° F.). 
Month. 
Days 
clear. 
Days part- 
ly cloudy. 
Days 
cloudy. 
Mean maxi- 
mum. 
Mean mini- 
mum. 
Mean. 
Rainfall (inches). 
> 
CO 
Oi 
< 
CO 
55 
> 
CO 
— 
> 
<j 
CO 
55 
Oi 
> 
< 
CO 
55 
55 
> 
< 
CO 
55 
55 
> 
CO 
55 
January. .. 
Febniary.. 
March 
April 
May 
10.6 
9.6 
9.6 
8.2 
8.0 
9 
11 
18 
16 
23 
24 
Id 
17 
13 
4 
9.5 
8.3 
10.5 
11.6 
11.3 
9 
11 
9 
9 
9 
4 
8 
6 
5 
16 
10.8 
10.3 
10.9 
10.5 
8.0 
13 
6 
4 
5 
2 
3 
1(1 
8 
12 
11 
63.1 
65.4 
73.7 
79.8 
85.1 
91.2 
62.1 
62.1 
70.8 
79.1 
87-. 1 
88.3 
68.4 
63.5 
77^8 
82.3 
91.2 
42.6 
44.4 
52.1 
58.8 
65.3 
70.8 
42.7 
42.0 
47.9 
54.7 
64.1 
70.2 
44.4 
42.8 
47.8 
55.8 
66.4 
72.8 
52.8 
54.8 
62. 9 
69.2 
75.1 
80.9 
52.4 
52.0 
59.4 
66.9 
75.6 
79.2 
56.4 
53.2 
58.8 
66.8 
74.4 
82.0 
1.32 
1.71 
1.75 
2.69 
3.04 
2.62 
0.96 
1.91 
1.36 
1.32 
2.88 
2.90 
0.09 
1.38 
.83 
5.26 
5.59 
.01 
Total 
13. 13 
11.27 
13 16 
1 
Average for the years 1877 to 1913. 
Average for the years 1871 to 1913. 
While Table VIII shows no great variation in the temperature 
during the growing months, there was an unusual difference in the 
aspect of the sky for the months of April and May, the months when 
most of the tillers and branches were being formed. For example, 
there were three more clear days in April and sixteen more in May 
in 1913 than in 1914. There were over twice as many cloudy days 
in April and over five times as many in May in 1914 as in the same 
months of the previous year. It is certain that light has a very 
marked effect on the development of tillers, and the only reasonable 
explanation to be offered in the variation in tillering during the two 
years seems to be a corresponding variation in light, as the soil con- 
ditions were very similar. There was a much greater rainfall in 1914 
than in 1913 during the months of April and May, as is shown, but 
this, if it would influence the results in any way, would be likely to 
make conditions more favorable for tillering. It would seem, on 
the whole, that an intermediate between the two seasons is much 
nearer the mean than either of the two seasons during which the 
experiments have been conducted. It is reasonable to conclude that 
in most seasons tillering might be somewhat less than in 1913, but 
much greater than in 1914, especially in the closer spaced plantings. 
Branching before the plants mature is abnormal and rarely occurs 
to any appreciable extent in grain sorghums at San Antonio. 
