38 BrLLETIX 976, U. S. DEPARTMEXT OF AGEICULTURE. 
AGRONOMIC DATA. 
Table XX shows the agronomic data recorded for the environ- 
mental experiments conducted at the Cereal Field Station, Amarillo, 
Tex., in the S-year period from 1915 to 1919, inclusive. In 1915 and 
again in 1918 no crop from seed from Chico, Calif., was grown. For 
each variety the data recorded are from seed continuously grown at 
Amarillo in comparison with that from seed grown at the other points. 
The stands in all plats of the same variety were made comparable by 
hand thinning each year except in 1919, which eliminated whatever 
influence unequal stands might have had on the crop. 
The data recorded for suckers and erect heads in Dwarf milo and 
headed stalks in the other varieties generally do not show any strik- 
ing differences m the same year. However, in the 1916 crop, feterita 
from the Amarillo seed is somewhat lower in the percentage of suckers 
and considerably below the others in percentage of stalks bearing 
heads. 
The yields of the same variety are fairly close in the same year. 
The seed from the same source did not make the highest yield in all 
years. 
Table XXI. — Annual and average yields of grain sorghums grown in the environmental 
experiments at the AmariUo Cereal Field Station during the 5-year period from 1915 to 
1919, inclusive. 
[In the statement of yields per acre the bushel is rated at 60 pounds for kafir and at 58 pounds for other 
sorghums.] 
■ 
Variety and source of seed. 
Annual yields per acre. 
Average yields per 
acre. 
1915 
191G 
1917 
1918 
1919 
3 years, 
1916, 1917, 
and 
1919. 
6 years, 
1915 to 
1919. 
Dwarf milo: 
Bushels. 
Bushels. 
Bushels. 
Bmhels. 
Bushels. 
Bushels. 
Bushels. 
61.7 
2.8 
29. 7 
4.8 
50. 
27. 5 
29.8 
Arlington, Va 
65.2 
2.9 
26.9 
22. 8 
6.6 
46.6 
25. 5 
29.6 
Chico, Calif 
2.3 
44.8 
23.3 
Feterira: 
Amarillo, Tex 
46, 9 
4. 7 
18.6 
3. 1 
27.2 
16.8 
20.1 
Arlington, Va 
ib. 6 
15. 8 
17. 2 
4. 1 
35. 1 
22. 7 
24.2 
Chico, Calif 
14. S 
16.9 
44.8 
25.5 
Dawn kafir: 
AmarUlo, Tex 
53.7 
5. 7 
26.7 
1.3 
26.0 
19.5 
22.7 
Arlington, Va 
58.3 
6.2 
29.0 
2.0 
31.0 
22.1 
25.3 
Chico, Calif 
5.3 
19.7 
37.3 
20.8 
The annual and average acre yields recorded in Table XXI show 
that Dwarf milo from Amarillo seed yielded highest in 1917 and 1919, 
and from the Arlmgton seed in 1915, 1916, and 1918. The 3-year 
average yield favors the home-grown seed, but the 5-year average 
3deld shows no difference between that and the seed grown at the 
Arlington Experimental Farm. 
