40 
BULLETIN 1175, U. S. DEPARTMENT OF AGRICULTURE. 
but milo sown on July 1 requires a longer growing period than that 
sown on June 15. This increase is due to the temperature grad- 
ually falling after the middle of August, at which date the July 1 
seeding is not headed. 
Table 16. — Agronomic data in the date-of-seeding experiments with Dwarf Yellow milo 
at the Woodward Field Station during the 6-year period from 1916 to 1921, inclusive. 
[In the statement of yields of grain per acre the bushel is rated at 58 pounds. 1 
Row space. 
Length of period. 
Yields per acre. 
Stalks 
Erect 
Stalks 
Height 
of 
plants. 
Grain 
Date of 
seeding. 
Plant. 
Stalk 
Vege- 
ta- 
Fruit- 
Total 
per 
plant. 
heads. 
headed. 
in 
crop. 
Total 
Grain. 
tive. 
, ing- 
crop. 
1916: 
In. 
In. 
Days. 
Days. 
Days. 
P. ct. 
P.ct. 
Feet. 
P.ct. 
Lbs. 
Lbs. 
Bus. 
May 1 
6.89 
5.84 
68 
29 
97 
1.18 
78.1 
4.0 
37.1 
2.400 
890 
15.3 
May 15 
6.14 
5.64 
66 
37 
103 
1.09 
58.6 
3.0 
22.8 
2,025 
461 
8.0 
June 1 
1917: 
April 16.. . 
7.13 
6.68 
69 
49 
118 
1.07 
65.6 
2.5 
23.5 
2,295 
540 
9.3 
18.84 
6.48 
122 
47 
169 
2.91 
59.0 
95.2 
3.0 
27.2 
3,600 
979 
16.9 
May 2 
14.67 
5.54 
105 
54 
160 
2.65 
62.2 
95.3 
3.0 
24.0 
5,119 
1,226 
21.1 
May 15.... 
9.70 
5.00 
108 
40 
148 
1.94 
57.4 
88.4 
3.5 
25.2 
4,781 
1,254 
21.6 
June 2 
9.64 
6.09 
92 
40 
132 
1.58 
52.6 
87.2 
4.0 
30.1 
5,119 
1,541 
26.6 
June 22. . . . 
9.19 
7.13 
84 
128 
112 
1.29 
70.5 
93.1 
4.8 
27.7 
5,569 
1,541 
26.6 
July 3 
1918: 
Apr. 16.... 
10.22 
6.99 
80 
121 
101 
1.46 
74.2 
92.2 
4.5 
14.9 
5,344 
799 
13.8 
62.38 
17.79 
85 
42 
127 
3. 35 
91.3 
93.6 
3.0 
17.6 
1,856 
326 
5.6 
May 1 
14.08 
6.75 
79 
33 
112 
2.09 
99.7 
54.1 
3.0 
5.4 
2,194 
118 
2.0 
May 11 
11.27 
6.45 
80 
40 
120 
1.75 
98.8 
34.7 
2.5 
4.4 
1,875 
83 
1.4 
June 1 
8.43 
5.30 
77 
30 
107 
1.59 
100.0 
22.4 
2.8 
3.7 
2, 625 
98 
1.7 
June 15 
8.14 
6.20 
75 
27 
102 
1.31 
100.0 
48.6 
3.0 
11.4 
2,700 
308 
5.3 
Julyl 
1919: 
Apr. 15 
10.77 
8.43 
85 
39 
124 
1.28 
81.8 
66.3 
2.8 
17.3 
3,536 
611 
10.5 
16. 54 
9.99 
101 
35 
136 
1.66 
89.4 
93.4 
4.0 
31.0 
3, 938 
1,221 
21.0 
Apr. 30.... 
17.20 
12.79 
93 
29 
122 
1.35 
94.0 
89.4 
4.0 
34.1 
3,263 
1,114 
19.2 
May 14.... 
9.93 
5. 78 
84 
28 
110 
1.72 
99.4 
85.0 
3.5 
34.9 
5,625 
1, 963 
33.8 
May 31.... 
11.65 
5.44 
75 
25 
100 
2.14 
98.8 
87.8 
3.8 
33.9 
6,975 
2,363 
40.7 
Juiie 14 
6.78 
4.85 
67 
30 
97 
1.40 
99.5 
87.2 
3.5 
29.0 
6,019 
1,744 
30.1 
June 30..'.. 
1920: 
Apr. 15.... 
7.77 
5.36 
62 
38 
100 
1.45 
98.6 
82.1 
3.8 
33.9 
5,005 
1,699 
29.3 
14. 26 
8.20 
92 
41 
133 
1.74 
79.8 
98.1 
4.5 
26.9 
3,769 
1,013 
17.4 
Mav 1 
8.37 
4.80 
81 
36 
117 
1.74 
93.8 
82.2 
4.5 
21.3 
3,525 
750 
12.9 
May 17.... 
7.02 
3.79 
70 
35 
105 
1.85 
99.0 
74.5 
4.8 
21.0 
5,850 
1,230 
21.2 
June 1 
•6.45 
3.90 
66 
39 
105 
1.65 
98.4 
73.3 
3.5 
20.6 
7,725 
1,590 
27.4 
Juns 15 
6. 65 
4.98 
66 
48 
114 
1.34 
94.7 
92.4 
4.2 
29.0 
11,122 
3,227 
55.6 
Julvl 
1921: 
Apr. 18.... 
6.15 
4.78 
65 
33 
2 98 
1.28 
70.3 
95.9 
4.9 
33.0 
9,386 
3,099 
53.4 
10.46 
6.66 
83 
38 
121 
1.57 
75. 5 
94.7 
4.8 
46.0 
3, 544 
1,631 
28.1 
Apr. 30 
13. 10 
6.22 
79 
30 
109 
2.11 
68.7 
98.4 
5.1 
43.3 
5,119 
2,216 
38.2 
May 16 
8.03 
5. 89 
73 
26 
99 
1.38 
90.6 
97.2 
4.9 
39.3 
5, 265 
2,070 
35.7 
June 1 
6.64 
4.78 
71 
34 
105 
1.39 
93.6 
95.5 
5.5 
35.1 
8,100 
2,841 
49.0 
June 15 
8.17 
5.44 
72 
33 
105 
1.50 
61.0 
95.7 
4.5 
38.0 
7,586 
2,880 
49.6 
Julyl 
7.77 
6.15 
67 
52 
119 
1.27 
95.1 
93.1 
5.0 
34.0 
6,171 
2,096 
36.1 
5-year aver- 
age, 1917 
to 1921: 
Apr. 16.... 
24. 50 
9. 82 
97 
41 
137 
2.24 
79.0 
98.2 
3.9 
29.7 
3,341 
1,034 
17.8 
May 1 
13.48 
7.22 
88 
30 
124 
1.97 
83.7 
83.9 
3.9 
25.6 
3, 844 
1,085 
18.7 
May 15 
9.19 
5.38 
83 
33 
116 
1.72 
89.0 
76.0 
3.8 
25.2 
4,679 
1,320 
22.7 
June 1 
8.56 
5.10 
76 
34 
110 
1.67 
88.7 
73.2 
3.9 
24.7 
6,109 
1,687 
29.1 
June 15 
7.79 
5.72 
73 
33 
103 
1.37 
85.1 
83.6 
4.0 
27.0 
6, 599 
1,940 
33.4 
Julyl 
8.54 
6.34 
72 
37 
108 
1.35 
84.2 
85.9 
4.2 
26.6 
5,889 
1,661 
28.6 
i Milo on plats sown on Juns 22 and on July 3 about 50 per cent and 25 per cent ripe, respectively, when 
the first frost occurred on Oct. 12. 
2 Not fully ripe when harveste J. 
The proportion of erect heads has varied greatly in different years, 
and in certain years there has been a great variation as between dates. 
On the average the percentage of erect heads was highest from the 
May 15 and June 1 seeding*, being ^89 and 88.7 per cent, respectively. 
In the height of plants the range has been from 2.5 to 5.5 feet. 
The range as between the different years has naturally been much 
greater than between the different dates. The average height of 
