CEREAL EXPERIMENTS AT DICKINSON, N. DAK. 



33 



putecl annual and average yields of these varieties are given in 

 Table XVII. 



Table XVII. — Annual and average yields of seven standard varieties of barley 

 grown at the Dickinson substation, 1907 to 1913, inclusive. 



[The groups and varieties are arranged according to their actual and computed average yields.] 







Yields per acre (bushels). 



C.I. 

 No. 



Group and variety. 



1907 



• J 



Average. 



1908 



1909 



1910 



1911 



1912 



1913 



6 years, 



1907 to 

 1911 

 and 

 1913. 



5 years, 



1908 to 



1911 



and 



1913. 



4 vears, 



1909 to 



1911 



and 



1913. 



531 



ACTUAL YIELDS. 



2-rowed hulled: 





37.5 



48.7 

 44.9 

 36.7 

 39.8 



27.9 

 30.2 



24.1 



48.7 

 46.8 

 46.0 

 37.0 



31.2 

 27.8 



23.0 



35.4 

 34.8 

 36.7 

 34.8 



34.5 

 28.0 



23.0 



35.6 

 34.8 

 31 

 33.2 



33.3 

 23.8 



25 



15.2 

 8.2 

 12.3 



17.0 



11.9 

 7.8 



8.4 



15.2 

 8.1 



15.0 

 9.8 



9.0 

 6.1 



14.5 



39.2 



41.3 

 46.0 



35. 



41.1 

 42.7 

 31.4 



27.5 

 30.6 



20.9 



35.0 



40.0 

 28.8 

 40.3 



33.1 



28.3 

 23.5 



23.2 



34.4 

 33.7 

 31.5 

 30.3 



26.6 

 24.9 



19.7 



33.6 



187 







39.4 

 29.3 

 28.5 



31.4 

 27.9 



22.1 



32.3 



532 



Primus 





32.1 



203 





46.8 



36 7 

 16.5 



40.9 



30.8 



575 

 863 



6-rowed hulled: 



25.5 

 24.2 



262 



6-rowed naked: 



Nepal 1 



19.1 



531 



COMPUTED YIELDS. 



2-rowed hulled: 



33.6 



187 



Svanhals 











32.4 



203 













30.2 



532 













30.1 



575 



6-rowed hulled : 







28.9 

 30.7 







26.9 



863 













21.6 



232 



6-rowed naked: 



Nepal ' 











21.3 

















1 For comnarison, the yield of this naked variety is given in bushels of 48 pounds. The actual yield in 

 bushels of 60 pounds, the standard weight, would be one-fifth less. 



Table XVII includes four varieties of 2-rowed hulled, two of 

 6-rowed hulled, and one of 6-rowed naked barley. The 2-rowed 

 barleys have outyielded the 6-rowed in all the years they have been 

 tested. In a 5-year period (1908 to 1911 and 1913) the two leading 

 2-rowed varieties have an actual average yield 31 per cent greater 

 than that of the two leading 6-rowed hulled varieties and 75 per 

 cent greater than that of the 6-rowed naked variety. In the four 

 years 1909 to 1911 and 1913, the average actual yield of the leading 

 2-rowed variety is 32 per cent greater than that of the leading 

 6-rowed hulled variety and 76 per cent greater than that of the 

 6-rowed naked variety. The average computed yield of the leading 

 2-rowed variety for the same period is 25 per cent greater than that 

 of the leading 6-rowed hulled variety and 58 per cent greater than 

 that of the naked variety. 



