EXPERIMENTS WITH DURUM WHEAT. 
41 
The combination of high altitude and northern location permits 
only a rather short growing season. Add to this the low rainfall and 
it is seen that cropping under dry-land conditions is somewhat handi- 
capped. The results since the station was established in 1908 are 
shown in Table XIX and the principal data graphically in figure 12. 
The difficulties experienced are indicated by the complete failures 
in 1911 and 1912 and the very low yields of spring varieties in 1910 
and 1914. 
Table XIX. — Annual and average yields of five varieties of durum wheat and five varieties 
of common wheat grown on the Belle Fourche Experiment Farm, Newell, S. Dak., 
during periods of varying length in the nine years from 1908 to 1916, inclusive. 
[Data obtained in cooperation with the Office of Western Irrigation Agriculture and, since 1912, with the 
South Dakota Agricultural Experiment Station.] 
C.I. 
No. 
Yield per acre (bushels). 
1908 
1909 
1910 
1911 
1912 
1913 
1914 
1915 
1916 
Average. 
Class, group, and variety. 
4 
vears, 
1913 
to 
1916. 
7 
years, 
'1910 
to 
1916. 
9 
vears, 
1908 
to 
1916. 
Durum: 
Kubanka— 
1516 
1493 
1350 
1440 
1444 
1442 
3081 
3276 
3025 
3020 
23.8 
22.3 
22.5 
24.9 
22.7 
25.4 
22.6 
22.6 
23.2 
21.4 
20.9 
40.3 
5.3 
8-3 
5.2 
7.4 
5.0 
22.7 
9.2 














19.1 
17.1 
16.7 
15.6 
16.5 
3S.6 
19.5 
16.8 
16.6 
14.1 
9.6 
9.5 
9.7 
«9.5 
7.4 
28.7 
7.2 
8.0 
5.1 
5.1 
54.5 
54.9 
58.2 
54.4 
54.0 
63.8 
46.9 
50.9 
43.4 
42.0 
19.7 
14.8 
13.7 
13.8 
25.7 
24.1 
24.6 
23.3 
15.5 
14.9 
14.8 
14.4 
17.2 
Arnautka 
16.6 
16.6 
16.3 
615.7 
Common: 
Crimean (winter) — 
14.2 
5.8 
8.1 
6.5 
5.6 
36.3 
19.9 
21.0 
17.9 
16.7 
24.0 
12.6 
26.0 
Fife— 
18.5 
18.3 
17.3 
13.8 
10.6 
9.0 




11.7 
10.9 
13.1 
Bluestem — H a v n e s 
(Minn. No. 169) 
12.0 
a Computed from yields of Kubanka, C. I. No. 1516. 
& Average for onlyS years, 1908 to 1915, inclusive. 
The data presented show clearly certain facts. Hard red whiter 
wheat of the Crimean group outyields any spring variety in all years 
except 1916, when Kharkof was out yielded by Kubanka and Ar- 
nautka durums. In average yields the Kharkof outranks Kubanka 
by fully 50 per cent. 
The five durum spring wheats, all of the Kubanka group, excel 
any spring common wheat by yields that are significant. In the 
four years during which it has been grown Marquis is the best yielder 
of the spring common wheats. It outyields Preston, the highest 
yielding variety in the 7-year period, by more than 1 bushel, but 
falls 4.7 bushels per acre behind the best Kubanka. In short, the 
durum varieties are the best spring wheats for the Belle Fourche 
district. 
