SORGHUM EXPERIMENTS ON THE GREAT PLAINS. 
39 
to sorghums except for the tendency toward a low July rainfall. 
(See fig. 3.) This period of low summer rainfall, however, is much 
shorter than at Chillicothe. Tex., where it extends over the three 
months, July, August, and September. Most of the sorgos except 
such long-season varieties as Honey and Gooseneck will mature at 
Woodward. The sandy soil at this station allows deeper penetra- 
tion of the moisture than do the heavier soils at the other stations, 
and therefore the sorghums do not suffer so quickly from drought. 
Dwarf milo when seeded late, about June 1 to 15, has made 
the highest yields of grain, but Sunrise kafir is recommended where 
a variety is wanted which will make satisfactory yields of both grain 
and fodder. 
Table 8 gives for each year the actual and relative yields of the 
varieties included in the tests. Sumac is used as the check for 
sorgos and Sunrise kafir for grain sorghums. 
Table 8. — Comparative yields of the different sorghum varieties grown at Wood- 
ward, Okla., for the 7-year period from 1915 to 1921, inclusive. 
Field-cured forage per acre 
(tons): 
Sorgos— 
Sumac 
Orange 
Honey. 
Red Amber. 
Black Amber- 
Grain sorghums l - 
Dawn kafir. 
Sunrise kafir. 
Blackhull kafir. 
White kafir. 
Red kafir. 
Yellow milo 
White milo 
Dwarf Yellow milo. 
Feterita 
Blackhull kaoliang. ..I 
Manchu kaoliang 
Vallev kaoliang 
Shallu 
Freed sorghum 
Schrock sorghum... 
Darso sorghum 
Threshed grain per acre (56- 
pound bushels) : 
Sorgos— 
Sumac 
Orange 
Honey 
Red Amber 
Black Amber 
Grain sorghums ! — 
Dawn kafir 
Sunrise kafir 
Blackhull kafir 
White kafir 
Red kafir 
Yellow milo 
White milo 
Dwarf Yellow milo . 
Feterita 
Blackhull kaoliang.. 
Manchu kaoliang... 
Valley kaoliang 
Shallu 
Freed sorghum 
Schrock sorghum ... 
Darso sorghum 
41.o 
41.8 
24.2 
2&9 
37.2 
20.8 
22 5 
38! 7 
26.0 
32.9 
31.5 
35.7 
24.0 
6.6 
2.6 
8.6 
3.1 
13.2 
6.3 
10.3 
7.9 
15.8 
13.8 
17.1 
4.6 
36.0 
39.5 
23.9 
28.5 
32.1 
20.1 
19.6 
16.4 
14.2 
19.0 
3.0 
3.5 
23.6 
8.0 
27.6 
26.8 
8.3 
10.3 
8.7 
6.2 
7.8 
2.5 
2.4 
2.9 
6.6 
11.2 
10.4 
10.4 
.3 
6.3 
2.9 
6.0 
10.2 
10.4 
3.4 
15.4 
23.2 
32.6 
40.4 
22.5 
21.9 
23.1 
42.6 
38.4 
26.7 
40.7 
21.1 
16.4 
16.5 
20.1 
16.1 
23.2 
31.3 i 
.75 
1.36 
3.31 
2.67 
2.78 
2.22 
29.0 
18.3 
27.5 
31.5 
16.1 
17.2 
28.1 
18.8 
29.5 
34.8 
34.2 
37.9 
37.7 
22.9 
29.4 
20.9 
28.0 
28.2 
37.4 
30.3 
40.2 
29.8 
35.3 
27.3 
43.1 
30.3 
42.8 
20.3 
21.4 
13.6 
9.6 
26.8 
11.6 
18.9 
29.7 
8.7 
33.3 
28.6 
14.3 
28.6 
26.1 
17.4 
19.3 
4. 
19.7 
20.9 
27.3 
30.6 
19.2 
20.1 
24.1 
24.2 
22.0 
23.6 
24.1 
20.2 
14.0 
17.4 
17.3 
10.7 
23.1 
23. S 
100 
111 
28 
113 
120 
100 
63 
66 
1 The forage and grain yields of all the grain sorghums except Freed, Schrock, and Darso are quoted from 
Department Bulletin 1175 (11), the bushel yields being translated into bushels of 56 pounds in order to 
proyide an exact comparison with the grain yields of the sorgos. 
