6 BULLETIN 450, V. S. DEPAETMElSTT OF AGEICULTUEE. 



The Kubanka produced relatively low yields at all stations. This 

 was caused by the sterility of the florets, probably induced by a 

 combination of drought factors.^ The Ghirka ranked first in yield 

 at Moccasin, Williston, Dickinson, and Newell; second at Edgeley 

 and Brookings; and fourth at Highmore. The results of this year 

 showed that the Ghirka variety possessed real value as a drought- 

 resistant wheat. For all stations the Ghirka ranked first, Rysting- 

 Glyndon second, Haynes third, and Kubanka fourth. 



Table I. — • Yields of the Ghirlca Spring and three other varieties of wheat grown at seven 

 experiment stations in the northern Great Plains area, 1908 to 1914, incliisive. 



Station and variety. 



C.I. 

 No. 



Yield per acre (bushels). 



1908 1909 1910 1911 1912 1913 1914 



Aver- 



Moccasin, Mont.: 



Kubanka 



Ghirka 



Rysting 



Haynes 



Williston, N. Dak.: 



Kubanka 



Ghirka 



Glyndon 



Haynes 



Dickinson, N. Dak.: 



Kubanka 



Ghirka 



Rysting 



Haynes 



Edgelev, N. Dak.:(2 



Kubanka (Edgeley No. 6) . 



Ghirka (Edgeley No. 162) . 



Kysting (Edgeley No. 3) . . 



Haynes ( Edgeley No. 46) . . 

 Brookings, S. Dak.: 



Kubanka 



Ghirka 



Rysting 



Haynes 



Highmore, S. Dak.: 



Kubanka 



Ghirka 



Glyndon 



Haynes 



Newell, S. Dak.: 



Kubanka 



Ghirka 



Rysting 



Haynes 



All stations: 



Kubanka 



Ghirka 



Rysting 



Glyndon 



Haynes 



1440 

 1517 

 3022 



2874 



1440 

 1517 

 2873 

 2874 



1440 

 1517 

 3022 



2874 



1440 

 1517 

 3022 



2874 



1440 

 1.517 

 2873 

 2874 



1440 

 1517 

 3022 



2874 



1440 

 1517 

 3022 

 2873 



2874 



5.0 



3.3 



2.5 



bb.O 



12.6 



clO. 7 



9.8 



10.5 



23.5 

 23.5 

 22.3 

 21.4 



11.5 



12.4 



10.1 



7.9 



16.1 

 8.8 

 14.9 

 11.6 



22.7 

 4.8 

 13.9 

 14.7 



24.9 

 16.2 

 19.3 

 18.3 



16.6 

 11.4 



}l3.3 



12.8 



37.8 

 34.2 

 29.0 

 29.7 



39.1 

 33.2 

 31.2 

 34.3 



33.7 

 28.9 

 33.0 

 30.0 



27.8 

 19.7 

 20.3 

 19.9 



11.8 

 17.7 

 1.5.5 

 16.9 



17.0 

 17.7 

 15.8 

 17.2 



21.4 

 11.7 

 15.0 

 13.8 



26.9 

 23.3 



22.8 



23.1 



13.2 

 13.0 

 9.1 



11.0 

 20.2 

 13.9 



14.9 



28.6 

 20.7 

 13.1 



5.8 

 7.9 

 6.2 

 9.0 



12.7 

 16.2 

 16.9 

 15.7 



8.0 

 6.2 

 12.2 

 10.0 



5.3 

 12.8 

 10.3 



9.0 



9.5 

 15.0 



13.3 



10.7 



33.0 

 25.2 

 27.0 

 18.7 



8.9 

 12.1 



8.0 

 69.2 



3.8 

 9.5 



7.7 



2.3 

 2.0 

 1.6 

 2.0 



3.0 



2.8 





 

 

 





 

 

 



7.0 

 7.1 



6.8 



5.9 



(a) 

 (a) 

 (a) 

 (o) 



51.0 



51.7 

 44.7 

 44.3 



(a) 

 (a) 

 (a) 

 (a) 



34.5 

 20.1 

 21.7 

 23.5 



28.0 

 18.0 

 16.8 

 15.8 



1.1 



2.4 







2.1 







1.9 

 

 



22.9 



18.8 



16.6 



12.2 



30.7 

 29.0 



26.7 

 C22.8 



33.0 

 22.2 

 28.2 

 30.0 



26.7 

 26.6 

 28.1 

 24.8 



25.1 

 30.6 

 25.2 



27.8 



28.3 

 26.7 

 20.0 

 20.2 



2. a 

 6.5 



8.7 

 67.7 



15.6 

 16.3 

 15.0 

 14.1 



23.1 

 22.5 



21.6 



21.1 



23.0 

 23.0 

 23.0 

 C18.6 



53.8 

 40.4 

 49.2 

 42.5 



14.2 

 11.3 

 12.4 

 8.3 



17.0 

 9.0 

 7.0 

 4.0 



15.0 



':8.7 



9.2 



2.5 



19.7 

 11.3 

 7.3 

 7.5 



C5.9 



c6. 1 



5.1 



5.1 



21.9 

 16.8 



17.7 



14.1 



23.1 

 21.3 

 20.2 

 17.7 



29.9 

 27.2 

 26.4 

 25.8 



19.5 

 21.4 

 20.7 

 17.7 



17.7 

 14.5 

 13.2 

 13.4 



16.2 

 13.8 

 13.8 

 12.2 



10.1 

 7.0 

 8.3 

 8.5 



10.4 

 9.3 

 9.2 



8.7 



18.1 

 16.4 



16.0 



14.9 



a Destroyed by hail in 1912. 



b Yield o"f Haynes Bluestem (C. I. No. 3021, Minn. No. 51). 

 c Computed from the yields of the other varieties sho'vvn. 



<i Results from State substation; work not cooperative. Edgeley numbers and C. I. numbers represent 

 the same original stocks. 



A second successive dry season occurred in 1911 at all stations 

 except Moccasin. There a plentiful rainfall caused the production 

 of large yields. Under the favorable conditions at Moccasin, the 



1 Salmon, Cecil. Sterile florets in wheat and other cereals. In Jour. Amer. Soc. Agron., v. 6, no. 1, 

 p. 24-30, 2 pi. 1914. 



