CEREALS OX THE BELLE EOUECHE EXPERIMENT FARM. 
27 
Table XVII. — Yields of the better varieties of winter wheat and of durum and 
common spring wheats grown on dry land on the Belle Fourche Experi- 
ment Farm, 1908 to 1919, inclusive. 
Yields per acre (bushels). 
Group and 
C.I. 
variety. 
No, 
Aver- 
age. 
1908 
1909 
1910 
1911 
1912 
1913 
1914 
1915 
1916 
1917 
1918 
1919 
Winter: 
Kharkof. . 
1442 
25.4 
40.3 
22.7 


38.6 
28.7 
63.8 
14.2 
4.7 

oiao \ 20.7 
Spring durum: 
Kubanka . 
1516 
23.8 
22.6 
5.3 


19.1 
9.6 
54.5 
19.7 
11.8 
34.8 
8. 9 17. 5 
Spring com- 
mon: 
Power 
^3025 
18.5 
17.3 
10.6 


16. 6 5. 1 
43.4 
6.5 
10.2 
30.0 
6.3 12.9 
a Not grown, yield from a single plat on summer fallow in experiments of the Office of Dry-Land 
Agriculture. 
b Power, C. I. No. 3697, grown from 1916 to 1919, inclusive. 
Winter wheat, although giving higher average yields, is somewhat 
less certain than spring wheat in the vicinity of Xewell, owing to 
poor germination of seed during cold fall weather, greater injury 
Fig. 8. — Plats on dry land at the Belle Fourche Experiment Farm in 1917 : 1. Kubanka 
spring wheat ; 2, Swedish winter rye ; 3, Kharkof winter wheat. Note the differences in 
stand and growth between the winter rye and the winter wheat due to the greater hardi- 
ness of the rye. 
from soil blowing, and the possibility of winterkilling. In case of 
failure of winter wheat from these causes, however, there is still an 
opportunity to sow spring wheat or some other spring crop. 
EXPERIMENTS WITH OATS. 
Oats is perhaps the most successful feed crop of all the small 
grains in this region. The yields of oats on the Belle Fourche Ex- 
periment Farm, however, usually have been less in pounds per acre 
than the yields of wheat. Oats are most profitably grown when sown 
on corn ground early in the spring. If drought or hot winds prevent 
the oats from filling, the crop can be cut for hay. 
