SORGHUM EXPERIMENTS OX THE GREAT PLAIXS. 
45 
The actual and relative yields of forage for each, year from 1914 to 
1921 are given in Table 12. Grain yields were not obtained consist- 
ently for the sorgos and are therefore available only for the grain 
sorghums. Sumac is used as a check for the sorgo varieties and Dawn 
kafir for the grain sorghums. The growing season is sufficiently long 
at Tucumcari for varieties like Blackhull and Red kafir. 
Table 12. — Comparative yields of the different sorghum varieties grown at Tucum- 
cari, X. Mex., for the 8-year period from 1914 to 1921, inclusive. 
Variety. 
1914 
1915 
1916 
J 1917 
1918 
1919 
1920 
1921 %t 
Check 
Rela- 
tive; 
per- 
cent- 
age of 
check. 
Field-cured forage per acre 
vtons) : 
Sorgos— 
6.02 
3.50 
6.13 
3.51 
3.06 
6.03 
4.10 
5.89 
4.20 
4.26 
6.57 
4.87 
6.31 
2.28 
2.32 
1.64 
5.30 
3.59 
2.71 
2.14 
1.48 
1.68 
1.82 
2.00 
1.16 
1.52 
1.62 
1.12 
5.43 
3.69 
5. 77 
2.87 
2. 42 
2.20 
4.83 
5.75 
3.20 
3.13 
1.71 
2.32 
2.07 
2.31 
.78 
1.32 
1.06 
1.20 
0.65 
1.40 
1.25 
.60 
.63 
4.10 
~5.~25~ 
1.70 
1.05 
2.55 
1.41 
2.22 
1.28 
3.85 
4.50 
4.94 
1.81 
3.T" 
8.5 
7.8 
4.9 
4.4 
1.66 
2.50 
2.44 

1.72 
"i.'oS" 
2.31 
1.56 
4.40 
3.35 
4.72 
2.28 
2.29 
4.40 
4.44 
4.40 
4.40 
4.80 
100 
75 
107 
52 
48 
Honey 
Red Amber 
Black Amber. _ . _ 
Dakota Amber 
Dwarf Ashburn ... 
McLean,. . . . 1 . 

Collier . 
Whooper... ___l 
Grain sorghums- 
Dawn kafir 
Sunrise kafir 
Blackhull kafir 
Red kafir 
Dwarf Yellow milo 
12.17 
2.79 
TIB" 
2.98 
2.92 
2.91 
2.95 
~3.~66" 
2.97 
1.92 
1.80 
2.00 
2.06 
.10 
.28 
.43 
.15 
.28 
.45 
. 55 
.13 
1.58 
1.90 
1.70 
2.05 
1.20 
.73 
.90 
1.05 
1.40 
1.38 
1.51 
1.74 
1.44 
1.03 
1.23 
1.44 
1.23 
1.59 
1.63 
1.85 
1.89 
1.82 
1.41 
1.43 
1.50 
1.34 i 
1.77 
2.46 j 
1.47 
3.53 
2.25 
1.39 
.94 
18.3 
18.7 
15.3 
17.3 
17.1 
13.7 
14.9 
15.2 
18.7 
21.5 
8.0 
20.7 
20.3 
14.4 
11.0 
1.63 
1.44 
1. 55 
1.53 
1.63 
1.62 
1.62 
1.63 
1.54 
1.62 
1.62 
2.05 
1.79 
1.32 
1.66 
18.3 
15.0 
17.2 
17.2 
18.3 
18.6 
18.6 
18.3 
15.5 
16.4 
12.4 
16.3 
15.8 
12.9 
20.1 
100 
128 
122 
119 
87 
88 
White milo 
Feterita 
93 
82 
115 
2.75 
1.47 
3.25 
1.64 
1.12 
14.3 
14.3 
7.9 
8.9 
13.5 
12.7 
13.5 
12.6 
3.06 
1.36 
4.60 
2.45 
1.97 
.69 
18.2 
21.7 
12.4 
18.9 
8.4 
8.4 
9.9 
9.3 
152 
Freed sorghum 
Schrock sorghum 
Darso sorghum 
Shallu 
2.51 
2.82 
2.73 
3.71 
.10 
1.20 
.85 
91 
172 
"".16" 
.28 








2.15 
1.80 
15.0 
15.8 
18.1 
17.4 
6.8 
4.0 
3.4 
5.8 
9.6 
1.66 
1.57 
.90 
14.7 
18.0 
9.8 
12.7 
15.4 
14.5 
19.1 
20.0 
22.2 
1.86 
1.50 
16.8 
28.8 
27.0 
29.5 
18.9 
~11.~3~ 
24.3 
19.6 
126 
105 
Manchu kaoliang 
Threshed grain per acre (56- 
pound bushels) : 
Dawn kafir . - 
1.27 
126.0 
32.3 
1.57 
41.7 
~3L6~ 
34.0 
26.5 
17.5 
19.3 
23.1 
57 
100 
Sunrise kafir 
Blackhull kafir 
Red kafir 
125 
89 
100 
Dwarf Yellow milo 
Yellow milo 
White milo 
47.0 
38.8 
39.3 
39.1 
93 
74 
80 
83 
121 
15.7 
8.8 
22.1 
13.8 
29.2 
15.4 
19.2 
21.6 
14.9 
5.4 
131 

10.3 
5.7 
65 
127 
...... 

20.1 
14.8 
20.9 
17.4 
15.0 
25.0 
25.0 
128 
Shallu 
112 
Manchu kaoliang 
19.8 
14.9 
1 Interpolated yields. (Yield of Dawn kafir in 1914 : yield of Sunrise kafir in 1914 
kafir, 1916 to 1921 : average yield of Sunrise kafir, 1916 to 1921.) 
average yield of Dawn 
Honey sorgo made the largest yield of forage, with Sumac second, 
the relation between these two varieties at Tucumcari being almost 
the same as at Big Spring, Tex. Here, also, the availability of seed 
makes Sumac the more popular variety among farmers. Early 
varieties do not yield so much forage as the later ones and are of 
little importance in this region except for late seeding. 
It is difficult to decide from the data which are the leading varieties 
From a forage standpoint Schrock sorghum, 
of grain 
sorghum. 
