EXPERIMENTS WITH DURUM WHEAT. 
33 
RESULTS AT HAYS, KANS. 
The Fort Hays Branch Experiment Station, as shown in Table II 
(p. 15), is located on a silty clay loam soil at an altitude of 2,000 
feet above sea level. During a 48-year period the normal annual rainfall 
has been 23.2 inches. The experiments there have been conducted 
cooperatively by the Kansas Agricultural Experiment Station and 
the Office of Cereal Investigations. 
The data discussed in this paper are presented in Table XIII and 
are seen in graphic form in figure 12. They cover a period of 14 
years, 1903 to 1916, inclusive. 
Table XIII. — Annual and average yields of two varieties of durum wheat and one variety 
of common wheat grown at the Fort Hays (Kans.) Branch Experiment Station during 
of varying length in the fourteen years from 1903 to 1916, inclusive. 
[Data obtained in cooperation with the Kansas Agricultural Experiment Station.] 
C.I. 
No. 
Yield per acre (bushels). 
Class, group, and 
variety. 
1903 
1904 
1905 
1906 
1907 
1908 
1909 
1910 
1911 
1912 
1913 
1914 
1915 
1916 
Average, 
5 
years, 
1912 
to 
1916. 
14 
years, 
1903 
to 
1916. 
Durum: 
Kubanka— 
2235-1 
1440 
1437 
12.2 
8.2 
17.7 
3.8 
2.1 
15 6 
7.0 
1.2 
m 6 
11.8 
7.8 
6.3 
5.2 
3.5 
37.0 
8.0 
4.6 
19.8 
Kubanka 
Common: 
Crimean (winter)— 

33.2 
1.7 
10.7 

5.9 
2.2 
5.2 4.3 
8.4 
26.1 


18.1 
17 6 
0.1 
2.2 
3.8 
14.6 
The varieties tested throughout this period include only two, 
viz, Kubanka of the durum class and Crimean of the hard red winter 
group of common wheat. During this period the Crimean out- 
yielded the Kubanka in the ratio of nearly 4 to 1, although the Crimean 
yield is only 14.6 bushels per acre. Tests during the last five years 
show that Marouani is better adapted than Kubanka. This part of 
Kansas is strictly a winter-wheat district, and spring wheat can not 
be profitably grown. 
RESULTS AT AKRON, COLO. 
The Akron Field Station of the Office of Dry-Land Agriculture, 
at Akron, Colo., lies at an altitude of 4,560 feet on a sandy loam 
soil. The average annual rainfall for the past 11 years was 19.7 
inches. The experiments discussed herein were conducted by the 
Office of Cereal Investigations in cooperation with the Office of Dry- 
Land Agriculture of the Bureau of Plant Industry. 
The results of the experiments are presented in Table XIV, and 
the principal data are shown in graphic form in figure 12. The 
