EXPERIMENTS WITH DURUM WHEAT. 
55 
precarious crop in this district and are not able to outyield the best 
spring varieties of common wheat. Durum varieties are evidently 
not suitable for growing in this valley. 
RESULTS AT MORO, OREG. 
The Eastern Oregon Dry-Farming Substation is located in Sher- 
man County, on the rolling hills of the Columbia Basin, at an average 
altitude of 1,800 feet. The soil is a silt loam. The average annual 
rainfall has been 1 1 .3 inches in the past 11 years. The station is oper- 
ated cooperatively by the Oregon Agricultural Experiment Station 
and the Office of Cereal Investigations. 
The yields obtained from 1911 to 1916, inclusive, are shown in 
Table XXX, and the principal facts are portrayed in figure 13. Only 
two durum varieties have been grown throughout this period. 
Their yields, while good, still are lower than those of any variety 
of common wheat shown. This is true in both the 4-year and the 
6-year periods. The Turkey hard red winter wheat is the best of all, 
closely followed by Early Baart and Koola. These latter two varie- 
ties are both bearded wheats, the first one with white, the other 
with red kernels. Durum wheats are not likely to become important 
in the Columbia Basin on the basis of the showing made. 
Table XXX. — Annual and average yields of two varieties of durum wheat and six 
varieties of common wheat grown at the Eastern Oregon Dry-Farming Substation, Moro, 
Oreg., during periods of varying length in the six years from 1911 to 1916, inclusive. 
[Data obtained in cooperation with the Oregon Agricultural Experiment Station.] 
C.I. 
No. 
Yield per 
acre (bushels). 
Class, group, and variety. 
1911 
1912 
1913 
1914 
1915 
1916 
Average. 
4 years. 
1913 to 
1916. 
6 years, 
1911 to 
1916. 
Durum: 
Kubanka — 
/1440 
\1516 
2511-2 
2203-2 
1558 
1697 
4068 
4158 
4067 
} 11.0 
3.5 
16.2 
7.5 
16.0 
18.0 
25.8 
24.0 
25.0 
19.6 
22.1 
19.4 
21.5 
18.3 
24.5 
27.5 
26.0 
19.2 
22.5 
20.9 
18.0 
23.6 
33.2 
20.6 
26.6 
26.0 
23.1 
24.0 
29.5 
37.2 
44.6 
55.0 
41.0 
42.3 
35.3 
37.3 
21.3 
24.3 
32.0 
31.8 
29.7 
26.8 
25.8 
25.4 
18.7 
Ble Noir 
18.0 
Common: 
9.0 
14.5 
13.1 
20.6 
19.0 
22.6 
26.1 
25.4 
Little Club— Little Club 
23.8 
White Australian— Pacific Bluestem... 
11.7 
20.1 
22.2 
RESULTS AT CHICO, CAL. 
The Chico Plant Introduction Garden is located in the Sacramento 
Valley, at an altitude of 189 feet, on a sandy loam soil containing 
some gravel. The normal annual precipitation is 23.6 inches, 
according to the records of 45 years. The garden is maintained by 
the Office of Foreign Seed and Plant Introduction of the Bureau of 
