50 
BULLETIN 1175, U. S. DEPARTMENT OF AGRICULTURE. 
Yellow milo and Sunrise kafir have been included during the entire 
five years, and data are available for each of these varieties from 
sowing on three dates for six years. Dawn kafir, feterita, and black- 
hull kaoliang have been included in these experiments for only three 
years. 
Table 21. — Yields of grain-sorghum varieties grown in the date-of-seeding experiments 
at the Woodward Field Station during the 5-year period from 1917 to 1921, inclusive. 
[In the statement of yields of grain per acre the bushel is rated at 60 pounds for the kafirs and at 58 pounds 
for all other sorghums.] 
Yields per acre (bushels). 
Variety and date of seeding. 
1916 
1917 
1918 
1919 
1920 
1921 
Average. 
3 years 
1919 to 
1921. 
5 years 
1917 to 
1921. 
6 years r 
1916 to 
1921. 
Dwarf Yellow milo: 
Apr. 15 
16.9 
21.1 
21.6 
26. 6 
26. 6 
13.8 
27.0 
24.2 
■29. 1 
26.4 
14.4 
7.3 
5.6 
2 
1.4 
1.7 
5.3 
10. 5 
2.4 
6.7 
6.1 
8.7 
4.0 
3 4 
21.0 
19 2 
33 8 
40.7 
30 1 
29.3 
9.7 
11 7 
26.8 
25.0 
23. 3 
24.2 
11 4 
21 9 
23.6 
21.0 
17.4 
12. 9 
21.2 
27.4 
55.6 
53.4 
15 9 
23 
38.3 
28.5 
37.5 
233 
32.8 
36.5 
34.3 
35 8 
22.0 
24.3 
36 2 
37.8 
45 
41.9 
40 3 
19.4 
30 5 
32.1 
40.6 
344 
34.1 
28. 1 
38 2 
35.7 
49.0 
49.6 
36.1 
29 4 
3 '). 7 
31.5 
35.0 
26 3 
23.7 
30. 5 
36 
32.5 
27.4 
22.2 
23.4 
30.2 
39 
45.1 
39 6 
18.3 
21.8 
33.2 
29.5 
29.0 
23.7 
24.9 
31 5 
30. 1 
28.1 
17.8 
18.7 
22.7 
29.1 
33.4 
28.6 
16. 9 
19 3 
27.0 
24.7 
21.1 
16.4 
May 1 
May 15 
June 1 
June 15 
15.3 
8.0 
9.3 
18.1 
20.3 
25.8 
July 1 
Sunrise ka%: 
Apr. 15 
May 1 
160 
10 5 
9.2 
18.7 
May 15 
24.2 
J une 1 
22.1 
June 15 
July 1 
Dawn kafir: 
Mav 1 
May 15 
June 1 
June 15 
July 1 
Fe e ita: 
Mav 1 
18.1 
34 5 
26.6 
24.4 

37.8 
37.8 
37.8 
39 8 
27.3 
19 
35 7 
35 7 
39.1 
40 6 
34.1 
23. 6 
26.7 
36.2 
34.1 
36.4 
Mav 15 
June 1 
June 15 
July 1 
July 15 
Blacfchull kaoliang: 
May 1 
1 
6 5 
*22.7 
23 1 
25 
20 5 
29 6 
31.4 
35.4 
Mav 15 

June 1 
June 15 

July 1 

July 15 
1 
1""" 
Dwarf Yellow milo made its extreme high yield, 55.6 bushels, from 
the June 15 seeding in 1920 and its extreme low yield, 1.4 bushels, 
from the May 15 seeding in 1918. In 1917 the June 1 and 15 sowings 
made the high yields, 26.6 bushels each. In 1918 the crop was almost 
a failure from all sowings, but that of July 1 made the highest yield. 
In 1919 the June 1 sowing made the highest yield; in 1920 the June 
15 sowing, with that of July 1 second; and in 1921 the June 15 sowing 
led, with that of June 1 a close second. In the 3-year and 5-year 
averages the June 15 seeding easily ranks first. In the 5-year average 
the June 1 seeding ranks second, while in the 3-year average the July 
1 seeding ranks second. In the 6-year average, which does not in- 
clude the June 15 date, the June 1 seeding is the highest. From 
these results it appears that, for the highest grain yield, Dwarf Yellow 
