EXPERIMENTS WITH MARQUIS WHEAT. 
19 
The data show that here also the hard red winter wheats of the 
Crimean group outyield any spring wheat. The margin of advan- 
tage, however, is not wide. Considering only the spring wheats it is 
seen that the three durum varieties outyield any of the spring oom- 
mon varieties by 3 to 5 bushels per acre. Among the five spring 
common wheats, the Marquis ranks third, being slightly exceeded by 
the Ghirka Spring, of the Fife group, and a bearded variety called 
Red Russian, of the Preston group. Among the entire 11 varieties 
the Marquis ranks ninth. 
Table X. — Annual and average yields of the Marquis and seven other varieties of spring 
wheat and three varieties of winter wheat grown at the Akron Field Station, Akron, Colo., 
1913 to 1915, inclusive. 
[Experiments conducted in cooperation with the Office of Dry-Land Agriculture Investigations.] 
Group and variety. 
C.I. 
No. 
Yield per acre (bushels). 
1913 
1914 
1915 
Fife: 
Marquis 
Ghirka Spring 
Glyndon 
Crimean (Winter): 
Kharkof6P4 
Kharkof 
Do 
Pelissier and Kubanka (durum) 
Pelissier 
Arnautka 
Kubanka 
Preston: 
Red Russian 
Erivan 
3641 
1517 
2873 
4207 
1583 
1442 
1584 
1493 
1516 
4141 
2397 
14.0 
8.0 
18.5 
16.6 
16.1 
10.5 
10.5 
6.0 
8.3 
12.0 
19.7 
19.3 
16.6 
25. ! 
26.6 
27.6 
26.5 
23.0 
19.3 
26.5 
22.6 
16.2 
28.3 
29.2 
27.5 
31.6 
27.9 
31.3 
23.9 
19.5 
17.9 
18.6 
13.6 
24.3 
23.9 
23.4 
22.9 
22.0 
21.3 
18.4 
16.9 
RESULTS AT ARCHER, WYO. 
At Archer the varietal experiments have included Marquis wheat 
during the three years, 1913, 1914, and 1915. The annual and aver- 
age yields are shown in Table XI. The average yield of the highest 
yielding variety in each group is shown graphically in figure 6. 
The results shown in Table XI are much like those obtained at' 
Akron, Colo. The hard red winter wheats outyield any spring 
wheats, though they exceed the durums by only 1 bushel. The 
Ghirka Winter, a beardless winter variety, not shown in the table, 
gave an average acre yield of 18.2 bushels, or nearly 1 bushel more 
than the Turkey, the best variety of the Crimean group. The durums 
again outyield all spring common wheats. Among the latter, how- 
ever, the Marquis leads. It outyields the next best variety of the 
Fife group, the Ghirka Spring, by 2 bushels, and the best Bluestem 
variety by 4.5 bushels. However, it exceeds the best of the Preston 
group by only 0.3 of a bushel. 
