EXPERIMENTS WITH DURUM WHEAT. 



37 



both periods. These four are Kubanka (C. I. No. 1516), Beloturka, 

 Pererodka, and Kubanka (C. I. No. 1440), named in the order of their 

 4-year rank. Pelissier, which was the highest yielding variety at 

 Akron, Colo., makes a fair yield at Archer, but ranks eighth in the 

 3-year average and sixth in the 4-year average. From the data at 

 hand the durums of the Kubanka group seem to be the spring wheats 

 best adapted for this district. 



Table XVI. — Annual and average yields of fourteen varieties of durum wheat and four 

 varieties of common wheat grown at the Cheyenne Field Station, Archer, Wyo., during 

 periods of varying length in the four years from 1913 to 1916, inclusive. 



[Data obtained, in cooperation with the Wyoming State Board of Farm Commissioners.] 





C.I. 

 No. 





Yield per 



icre (b 



ushcls). 





Class, group, and variety. 



1913 



1914 



1915 



1916 



Average. 





3 vears, 



1913 to 



1915. 



4 vearr, 

 1913 to 

 1916. 



Durum: 



Kubanka— 



1516 



1520 

 1350 

 1440 

 1493 

 1593 

 4064 

 1444 

 1447 

 1354 



1584 

 2228 

 1445 

 3024 



1571 

 2397 

 3641 

 2874 



7.1 



7.7 

 8.3 

 7.5 

 7.2 

 7.9 

 6.4 

 7.8 

 7.5 

 7.7 



8.7 

 6.7 

 8.6 

 7.5 



10.0 

 9.4 

 9.0 

 4.4 



13.0 

 11.9 

 12.8 

 12.5 

 12.3 

 11.5 

 10.7 

 11.5 

 12.3 

 12.8 



11.6 

 10.3 

 10.8 

 10.5 



7.9 

 9.5 

 8.4 

 9.0 



27.6 

 28.9 

 26.0 

 25.6 

 23.8 

 21.5 

 23.6 

 25.9 

 24.1 

 22.1 



22.6 



18.8 

 24.4 

 22.8 



32.0 

 22.0 

 20.9 

 11.7 



6.5 

 5.1 



5.4 

 5.8 

 6.1 

 7.6 

 6.9 



5.9 



10.0 

 7.5 

 5.4 

 5.0 



15.9 



16.2 

 15.7 

 15.2 

 14.4 

 13.6 

 13.6 

 15.1 

 14.6 

 14.2 



14.3 

 11.9 

 14.6 

 13.6 



16.6 

 13.6 

 12.8 



8.4 



13.6 





13.4 



Pererodka 



13.1 





12.9 





12.4 





12.1 





11.9 







Gharnovka 









Pelissier— 



Pelissier 



12.2 







Velvet Don — Velvet Don 









Common: 



Crimean (winter) — Turkey 



15.0 



Preston — Erivan 



12.1 





10 9 





7 5 







RESULTS AT HIGHMORE, S. DAK. 



The Highmore substation of the South Dakota Agricultural Experi- 

 ment Station is located on a glacial clay loam soil at an altitude above 

 sea level of 1,890 feet. The average annual rainfall has been 16.7 

 inches during the last 22 years. The cereal experiments were con- 

 ducted by the South Dakota Agricultural Experiment Station in 

 cooperation with the Office of Cereal Investigations. 



The experiments were begun in 1902. The data obtained are shown 

 in Table XVII, and the principal facts are presented graphically in 

 figure 12. No less than 26 durum varieties were tested in the first 

 three or four years. Only nine of these, all in the Kubanka group, 

 were carried for a long period of time. Cropping conditions are 

 sometimes precarious in this locality. Almost complete failures 

 are recorded in 1911 and 1912. and the yields in 1910 and 1913 were 

 very low 



