EXPERIMENTS WITH DURUM WHEAT. 
19 
are the standard varieties in that district. The durum varieties are 
compared, therefore, with Kharkof (C. I. No. 1442), one of the best 
yielders in the Crimean group. 
Table III. — Annual and average yields of five varieties of durum wheat and one variety 
of common ivheat grown at the McPherson (Kans.) substation during periods of varying 
length in the six years from 1904 to 1909, inclusive. 
[Data obtained in cooperation with the Kansas Agricultural Experiment Station.] 
C.I. 
No.o 
Yield per acre (bushels). 
Class, group, and variety 
1904 
1905 
1906 
1907 
1908 
1909 
Average. 
5 years, 
1904-1907 
and 1909. 
6 vears, 
1904 to 
1909. 
Durum: 
Kubanka— 
2246 
2094 
2100 
2086 
2228 
1442 
16.3 
12.7 
11.7 
11.0 
10.3 
25.9 
14.-2 
11.3 
14.5 
11.7 
9.8 
IS. 4 
24.0 
25.6 
24.5 
21.7 
16.7 
35.1 





20.9 
(P) 
13.5 
00 
(&) 
(?) 
19.5 
13.8 
12.6 
13.4 
11.6 
10.9 
19.5 
13.7 
12.4 
12.8 
11.2 
9.5 
24.0 
Do..; 
Kahla — Black Don 
12.6 
Pelissier — 
Saragolla 
Common: 
Crimean (winter)— Kharkof 
23.2 
a Cereal Investigations number. b Record of yields lost. 
Reference to Table III and figure 8 shows that the Kharkof winter 
wheat outyields the best durum variety in the ratio of nearly 2 to 1. 
Among the durum varieties a Kubanka leads. Since this district is 
Fig. 9. — Heads of representative varieties of five groups of wheat: a, Turkey, a hard red winter 
wheat; b, Fife; c, Preston; d, Bluestem; e, Kubanka (durum; edge view). 
not suited to the growing of spring-sown varieties of wheat, it is not 
surprising that the Crimean wheat so far surpasses the durum. In 
1906, however, the yields of the durum varieties ranged from 16.7 
