EXPEEIMEKTS 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 com- 

 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. — Annvxil and average yields of the Marquis and seven other varieties of spring 

 wheat and three varieties oftvinter 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. 



Fife: 



Marquis 



Ghirka Spring 



Glyndon 



Crimean (Winter): 



Kharkof6P4 



Kharkof 



Do 



Pelissier and Kubanka (durum): 



Pelissier 



Amautka 



Kubanka 



Preston: 



Red Russian 



Erivan 



CI. 



No. 



3641 

 1517 

 2873 



4207 

 1583 

 1442 



1584 

 1493 

 1516 



4141 

 2397 



Yield per acre (bushels). 



1913 



7.5 

 14.0 



ao 



18.5 

 16.6 

 16.1 



10.5 



10.5 



6.0 



8.3 

 12.0 



19.7 

 19.3 

 16.6 



26.1 

 25.9 

 26.6 



26.6 

 27.6 

 26.5 



23.0 

 19.3 



1915 



Aver- 



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 groap, 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. 



