CEREALS ON THE BELLE FOURCHE EXPERIMENT FARM. 
65 
ter spelt, proso, and buckwheat produced rather low yields and are 
not well adapted to growing at Newell under irrigation, and none of 
these four crops except proso are at all adapted to the dry-land con- 
ditions there. 
Table XLVIII. — Yields of the leading varieties of different grain crops grown 
on irrigated land on the Belle Fourche Experiment Farm, 1915 to 1919, 
inclusive. 
C.I. 
No. 
Yields per 
acre (pounds). 
Group and variety. 
1915 
1916 
1917 
1918 
1919 
Average. 
1915 
to 
1918 
1915 
to 
1919 
Kharkof winter wheat 
1583 
137 
3331 
1524 
1440 
a 3,976 
a 2,496 
"i'.hhh' 
1,320 
678 
655 
425 
1,141 
1,248 
100 
1,150 
1,347 
1,770 
1,192 

1,845 
1,968 

1,84S 
1,798 
1,394 
980 
1,955 
1,331 
Swedish (Minn. No. 2) winter rye... 
Buffum Black Winter emmer 
2,816 
2,016 
1,900 
1,782 
1,914 
1,638 
1,911 
1,667 
Kubanka durum spring wheat 
530 
551 
61 
1,881 
1,690 
3,567 
2,410 
1,518 
1,536 
2,016 
924 
2,112 
1,811 
2,016 
White Russian oats 
1,852 
Japanese buckwheat 
1,042 
609 
1 
a Not comparable with spring grains; grown on better soil. 
EXPERIMENTS WITH FLAX. 
Flax has been a fairly successful crop on irrigated land. It also is 
an excellent nurse crop for alfalfa. The yields obtained at Newell 
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Fig. 22. — Diagram showing the average yields, in bushels per acre, of the leading varieties 
of flax on irrigated land at the Belle Fourche Experiment Farm for the 6-year period 
from 1914 to 1919, inclusive. 
were fairly good except in 1913 when the flax was grown on poor 
land. Some infection of wilt and canker has been observed in the 
experiments, but the injury usually was very slight. A spot about 8 
