EXPERIMENTS WITH DURUM WHEAT. 
25 
Table IX. — Annual and average yields of one variety of durum wheat and five varieties 
of common wheat grown at the Minnesota Agricultural Experiment Station, University 
Farm, St. Paul, Minn., during periods of varying length in the four years from 1913 to 
1916, inclusive. 
[Data presented by courtesy of the Minnesota Agricultural Experiment Station.] 
Minn. 
No. 
Yield per 
acre (bushels). 
Class,-group,iand variety. 
1913 
1914 
1915 
1916 
Average. 
3 years, 
1914 to 
1916. 
4 years, 
1913 to 
1916. 
Durum: 
990 
845 
1239 
285 
924 
169 
25.7 
41.9 
38.6 
43.5 
33.8 
30.3 
47.8 
27.7 
27.0 
26.5 
26.7 
46.7 
57.0 
50.0 
49.2 
46.7 
39.9 
23.8 
33.3 
26.3 
23.2 
22.7 
23.3 
33.6 
46.0 
34.7 
33.1 
32.0 
30.0 
31.6 
Common: 
Fife: 
36.5 
34.5 
34.9 
30.9 
RESULTS AT CROOKSTON, MINN. 
The Northwest Experiment Station at Crooks ton, Minn., is located 
on a heavy clay loam at an altitude of 863 feet. It has an average 
annual rainfall of 21.8 inches in a 26-year period. The experiments 
there have been conducted independently by the Minnesota Agricul- 
tural Experiment Station and are presented here through the courtesy 
of the director and his associates. 
, The data cover the period of five years from 1912 to 1916, inclusive, 
as shown in Table X and figure 8. Yields are given of three durum 
wheats of two different groups and of four common wheats, repre- 
senting the three leading spring groups. The three durum varieties 
excel Glyndon, Haynes, and Preston by from 2 to 5 bushels per acre. 
Only the two durums in the Kubanka group outyield Marquis, 
however, and then by only 0.6 bushel in one case and 1.9 bushels in 
the other. 
Table X. — Annual and average yields of three varieties of durum wheat and four varieties 
of common wheat grown at the Northwest Agricultural Experiment Station, Croohston, 
Minn., during the five years from 1912 to 1916, inclusive. 
[Data presented by courtesy of the Minnesota Agricultural Experiment Station.] 
Yield per acre (bushels). 
Class, group, and variety. 
1912 
1913 
1914 
1915 
1916 
5-year 
average. 
Durum: 
Kubanka — 
Mindum (Minn. No. 951) 
33.4 
32.2 
28.2 
27.8 
26.5 
33.4 
38.5 
21.6 
27.8 
25.3 
21.4 
20.4 
. 18.2 
17.4 
22.3 
14.6 
13.4 
23.9 
17.8 
17.7 
19.2 
34.5 
38.0 
32.6 
40.0 
30.9 
28.1 
23.3 
16.6 
9.6 
11.6 
5.8 
3.1 
4.9 
2.2 
25.7 
24.4 
22.2 
Common: 
Fife— 
23.8 
Glyndon (Minn No 153) 
19.7 
20.5 
20.1 
a Average 
14644°— 18— Bull. 618 4 
of the y 
elds of t 
wo plats 
