48 
BULLETIN 1284, U. S. DEPARTMENT OF AGRICULTURE 
trace on the fourth day. In 1917, however, rain fell on three different 
days of the week preceding seeding, and on the day following there 
was a fall of 0.28 inch. In 1916 most of the rain of the 7-day interval 
before seeding fell during the preceding 48 hours. After seeding, on 
the second and third days traces of rain occurred, and on the fourth 
day 0.19 inch fell. 
Table 16. — Climatic data recorded at Columbia, Mo., for the month of May in 
each year from 1915 to 1918, inclusive 
Temperature 
(°F.) 
Precipitation 
(inches) 
Year 
Mean 
Defi- 
ciency 
or excess 
Actual 
Defi- 
ciency 
or excess 
V 
1915.. 
62.6 
64.9 
58.6 
68.8 
-1.9 
+.4 
-5.9 
+4.3 
6.32 
5.21 
4.89 
3.95 
+1.46 
1916 
+.35 
1917 
+.03 
1918 
—.91 
As further evidence bearing upon the question, the month of May, 
1918, had a higher mean temperature and lower precipitation than 
the corresponding months of the other years. The data for this 
month are presented in Table 16. 
Table 17. — Infection of sorghums with covered kernel smut at Manhattan, Kans., 
in the four years from 1916 to 1919, inclusive 
Variety 
Shallu 
Sorgo: 
Black Amber... 
Red Amber 
Do 
Broomcorn: 
Acme 
Dwarf. 
Standard 
Kaoliang: 
Brown 
Do 
Do 
Manchu 
Do 
Kafir: 
Blackhull 
Do ^.. 
Blackhull (Afri 
can). 
Dawn. _-. 
Sunrise 
White 
White African.. 
Pale Red 
Pink 
Red 
Durra: 
Brown.. 
Do 
Do 
White 
Do. 
Do 
Do... 
1917 
Serial No. 
C.I. 85 
S. P. I. 32384.. 
S. P. I. 17548.. 
S. P. I. 1534... 
C.I. 243-7-2.. 
C.I. 442 
CI. 446 
CI. 324 
CI. 413 
CI. 424. 
CI. 171 
CI. 328-1 
CI. 71 
CI. 207 
CI. 321 
CI. 340 
CI. 472 
CI. 252.. 
CI. 314 
CI. 316....... 
CI. 432 
CI. 34 
CI. 183 
CI. 246 
S. P. I. 17537.. 
CI. 81 
S.P.I. 17535.. 
S. P.I. 28995- 
S. P. I. 38592.. 
Plants 
Number 
91 
117' 
382 
227 
176 
145 
144 
127 
124 
154 
110 
136 
136 
95 
104 
157 
137 
74 
113 
95 
105 
107 
32 
38 
147 
74 
153 
54 
Infec- 
tion 
Per cent 
17.6 
27.4 
6.8 
12.5 
7.6 
11.1 
3.9 
3.2 
3.2 
7.3 
6.6 
7.4 
12.6 
14.4 
13.4 
6.6 
12.2 
14.2 
14.7 
12.4 
16.8 
18.8 
36.8 
13. G 
14.9 
27.5 
9. 5 
13.0 
Plants 
Nu mber 
18 
200 
148 
136 
150 
153 
140 
190 
127 
188 
125 
55 
213 
97 
163 
12 
50 
85 
103 
173 
127 
86 
165 
165 
76 
60 
18 
Infec- 
tion 
Per cent 
16.7 
21.0 
15.5 
18.4 
2.0 
5.2 
10.0 
7.9 

2.1 
12.8 
18.2 
14 
8.3 
6.0 
15.3 
25.2 
28.9 
37.5 
9. 1 
7. 1 
12.8 
4.8 
10.3 
3.9 

in. 7 
1918 
Plants 
Number 
53 
113 
125 
115 
64 
54 
137 
53 
50 
103 
51 
59 
131 
48 
107 
65 
110 
26 
101 
135 
MS 
100 
43 
48 
84 
110 
56 
Infec- 
tion 
Per cent 
35.8 
40.7 
30.4 
27.8 
12.5 
18.5 
12.4 
13.2 

6.3 
13.1 
28.2 
43.1 
23.7 
22.9 
27.1 
39.3 
33.8 
18.6 
42.3 
44.6 
23.0 
8.8 
48.0 
30.2 
25.0 
33.3 
1. 7 
16.1 
Plants 
Number 
2 
124 
123 
138 
92 
74 
78 
115 
104 
67 
103 
103 
80 
151 
111 
125 
04 
111 1 
1 II 
L18 
121 
Infec- 
tion 
Per cent 

13.7 
7.3 
14.5 
14.1 
8.1 
9.0 
2.6 
1.9 
6.0 
30.1 
37.9 
25.0 
30.5 
64.2 
18.0 
36.0 
42.2 
28.6 
38. :< 
59. 3 
39. 7 
68 
25. 
69 
33. 3 
73 
8.2 . 
34 
52.9 
96 
14.6 
101 
2.0 
68 
4.4 
