46 



BULLETIN 618, U. S. DEPARTMENT OF AGRICULTURE. 



Kubanka has slightly outyielded Arnautka. It has excelled also in 

 all periods all other durum varieties except a pure-line selection of 

 Taganrog (C. I. No. 1570). This selection has been given Cereal 

 Investigations No. 5295 and is here named Buford, to commemorate 

 the Buford-Trenton Reclamation Project, in which the Williston sub- 

 station is located. This wheat has outyielded all others included in 

 Table XXIII during each of the last four years, with an average yield 

 of 44.1 bushels, which is 1.6 bushels greater than that of Kubanka. 



Table XXIII. — Annual and average yields of six varieties of durum wheat and five 

 varieties of common wheat grown at the Williston (N. Dak.) substation during periods 

 of varying length in the nine years from 1908 to 1916, inclusive. 



[Data obtained in cooperation with the North Dakota Agricultural Experiment Station.] 





C.I. 



No. 



Yield per acre (bushels). 





1908 



1909 



1910 



1911 



1912 



1913 



1914 



1915 



1916 



Average. 



Class, group, and variety. 



4 



years, 



1913 



to 



1916. 



6 



years, 



1908 



to 



1913. 



8 



years, 



1909 



to 



1916. 



9 



years, 



1908 



to 



1916. 



Durum: 



Kubanka — 



5295 

 1440 

 3693 

 1447 

 1350 



1445 

 3641 













35.0 



54 6 



49.4 

 47.3 

 45.5 



37.2 

 36.0 

 37.4 



44.1 

 42.5 

 41.2 









Kubanka 



12.6 

 15.6 



15.8 

 12.8 



15.6 



39.1 



37.4 

 35.5 

 34.8 



36.8 



11.0 

 6.1 

 9.3 

 9.5 



3.7 



8.9 

 8.2 

 10.5 

 7.3 



8.9 



51.0 

 49.7 

 46.0 

 48.3 



43.3 



33. Oj 53.8 

 34.7 47.2 



25.9 

 25.3 

 25.3 



24.4 



22.2 



35.6 

 33.3 



32.5 

 31.3 





34,8 









33.7 

 25.0 



29.0 

 28.7 

 30.7 

 25.0 



7.8 















Velvet Don— Velvet 

 Don 















Common: 

 Fife— 



52.5 

 51.3 



47.5 

 46.3 



10.0 



40.6 

 45.1 

 44.6 

 43.4 



12.8 



35.0 

 31.8 



28. 5 

 35.0 



34.2 



39.3 

 39.2 



37.8 

 37.4 



16.2 









3697 

 3083 

 3698 



1543 



13.1 



16. 7 



34.0 

 35.1 

 26.2 



40.0 



17.1 

 11.1 

 13.4 



9.9 



11.1 

 10.9 

 12.7 



26.5 



44.7 

 42.3 

 44.7 







24.8 

 24.5 



33.0 

 31.3 



30.8 



17.7 



30.8 



Bluestem — Dakota. . . . 



Preston — Preston 



Crimean (winter) — 

 Beloglina 



29.7 



The durum wheats have outyielded the leading varieties of Fife, 

 Bluestem, Preston, and Crimean winter wheat in all the periods in 

 which comparisons can be made. The lead of Kubanka over Power 

 Fife, its nearest competitor in the common wheats, in the 8-year and 

 9-year periods is 2 bushels and 1.7 bushels, respectively, quantities 

 which may be called fairly significant. It is probable that conditions 

 in the valley where the station is located are slightly more favorable 

 to common wheat than they are on the upland soil, which includes 

 most of the farm land in that section of the State. 



These results, covering a* long period of years, together with those 

 from Dickinson, N. Dak., and Highmore, Eureka, and Newell, S. 

 Dak., show rather conclusively that Kubanka durum wheat is the 

 variety best adapted to the central and western parts of North and 

 South Dakota. A single year's test at Mandan, N. Dak., further 

 supports this conclusion. 



