EXPERIMENTS WITH DUEUM WHEAT. 
37 
both periods. These four are Kubanka (C. I. No. 1516), Beloturka, 
Pererodka, and Kubanka (C. I. No. 1440), named in the order of their 
4-year rank. Pelissier, which was the highest yielding variety at 
Akron, Colo., makes a fair yield at Archer, but ranks eighth in the 
3-year average and sixth in the 4-year average. From the data at 
hand the durums of the Kubanka group seem to be the spring wheats 
best adapted for this district. 
Table XVI. — Annual and average yields of fourteen varieties of durum wheat and four 
varieties of common wheat grown at the Cheyenne Field Station, Archer, Wyo., during 
periods of varying length in the four years from 1913 to 1916, inclusive. 
[Data obtained in cooperation with the Wyoming State Board of Farm Commissioners.] 
C.I. 
No. 
Yield per acre (b 
ushels). 
Class, group, and variety. 
1913 
1914 
1915 
1916 
Average. 
3 vears, 
1913 to 
1915. 
4 vears, 
1913 to 
1916. 
Durum: 
Kubanka— 
Kubanka 
1516 
1520 
1350 
1440 
1493 
1593 
4064 
1444 
1447 
1354 
1584 
2228 
1445 
3024 
1571 
2397 
3641 
2874 
7.1 
7.7 
8.3 
7.5 
7.2 
7.9 
6.4 
7.8 
7.5 
7.7 
8.7 
6.7 
8.6 
7.5 
10.0 
9.4 
9.0 
4.4 
13.0 
11.9 
12.8 
12.5 
12.3 
11.5 
10.7 
11.5 
12.3 
12.8 
11.6 
10.3 
10.8 
10.5 
7.9 
9.5 
8.4 
9.0 
27.6 
28.9 
26.0 
25.6 
23.8 
21.5 
23.6 
25.9 
24.1 
22.1 
22.6 
18.8 
24.4 
22.8 
32.0 
22.0 
20.9 
11.7 
6.5 
5.1 
5.4 
5.8 
6.1 
7.6 
6.9 
5.9 
10.0 
7.5 
5.4 
5.0 
15.9 
16.2 
15.7 
15.2 
14.4 
13.6 
13.6 
15.1 
14.6 
14.2 
14.3 
11.9 
14.6 
13.6 
16.6 
13.6 
12.8 
8.4 
13.6 
13.4 
Pererodka 
13.1 
12.9 
12.4 
Marouani 
12.1 
11.9 
Pelissier—- 
12.2 
Saragolla 
Velvet Don — Velvet Don 
Kahla — Purple 
Common: 
Crimean (winter) — Turkey 
15.0 
12.1 
10.9 
Bluestem — Haynes 
7.5 
RESULTS AT HIGHMORE, S. DAK. 
The Highmore substation of the South Dakota Agricultural Experi- 
ment Station is located on a glacial clay loam soil at an altitude above 
sea level of 1,890 feet. The average annual rainfall has been 16.7 
inches during the last 22 years. The cereal experiments were con- 
ducted by the South Dakota Agricultural Experiment Station in 
cooperation with the Office of Cereal Investigations. 
The experiments were begun in 1902. The data obtained are shown 
in Table XVII, and the principal facts are presented graphically in 
figure 12. No less than 26 durum varieties were tested in the first 
three or four years. Only nine of these, all in the Kubanka group, 
were carried for a long period of time. Cropping conditions are 
sometimes precarious in this locality. Almost complete failures 
are recorded in 1911 and 1912, and the yields in 1910 and 1913 were 
very low 
