CEREAL EXPERIMENTS AT DICKINSON, N. DAK. 



15 



ranged in the table according to the year of their introduction into 

 the tests. 



Table VII. — Computed (annual and average) yields of 40 varieties of wheat 

 at the Dickinson substation, 1908 to 1918, inclusive, compared with the aver- 

 age actual yield for the same years. 





Variety. 



Yield per acre (bushels). 



C.I. 



No. 



1908 



1909 



1910 



1911 



1913 



Average. 





Com- 

 puted. 



Actual. 



1440 



Kubanka 



23.2 



23.5 



23.5 



22.3 



17.8 



16.5 



23.4 



22.4 



23.4 



21.1 



20.5 



22.3 



19.4 



19.6 



21 



22.5 



20.1 



31.9 



28.9 



33.4 



30.9 



34.5 



33.9 



35 



36 



29.6 



37.9 



33.6 



30.5 



18.7 



27.3 



21.6 



11 



22.4 



17.9 



17.6 



22.4 



23 



19.3 



3.8 

 9.5 

 9 

 7.6 



27.9 

 26.6 

 28.1 

 28 



25.4 



23.2 



23.1 



20 



24.9 



22.8 



25.3 



26.9 



25.3 



26.1 



27.1 



26.4 



24.7 



1517 





23.4 



3022 

 3314 

 1350 



Rysting Fife .-. 



Crossbred Bluestem (N. Dak. No. 318).. 

 Pererodka 



22.4 

 20.2 

 25 9 



1444 







22.1 



1493 









25.4 



1494 



Arnautka 



Pelissier 



Nicaragua 



Kahla , 



Haynes Bluestem (Minn. No. 169) 







27.7 



15S4 







25 8 



2006 







26 2 



208S 







27.9 



3020 









25 7 



2959 











1596 



Fretes 



Galsralos 



Mexican No. 1 



25.3 

 23.7 



27.1 









22.5 

 22.5 

 24.8 



22 



239S 









21.9 



3035 









24.3 



3036 











4063 



Kubanka No. 8 



42.5 

 22.6 

 30 



19.9 

 18.3 

 19.7 

 21.7 

 18.7 

 18.3 

 24.4 

 20.5 

 23.6 

 16.6 



3.5 

 11 



31.7 



31.4 

 17.3 

 24.9 



18.7 



31.4 



3313 







20.3 



4065 







24.4 



3081 







9.9 



24.4 



19.2 



2949 











2953 















3709 













3710 



do 



Coffee 























Polish 







9^6 



14.8 

 7.5 

 10.2 

 9.2 

 5.4 

 6.3 



26 "'" 



26 



23.8 



24.6 



25.5 



27.8 



29.8 

 26.6 

 26.9 

 26.5 

 26.7 



17.8 

 20.4 

 15.7 

 17.4 

 17.4 

 16.6 





2874 



Haynes Bluestem (Minn. No. 169) 







16.7 



3315 











20.3 



3316 











15.6 



3319 



White Fife 









16.7 



3328 



Preston 









17.7 



3329 



Red Fife 









17.4 



3317 













3320 









3321 

















3322 

















3323 

















3318 



Bearded Fife (Velvet Chaff) 















3641 

















4064 













30.6 

 19.6 







2492 































In 1907, 1908, and 1909 the wheat was grown on new land which 

 had been broken and backset the previous season. In succeeding 

 years this crop usually followed potatoes, though some of the vari- 

 eties were grown after corn in 1910 and 1911. The seed has ordi- 

 narily been sown about April 15 ; in 1910, how r ever, the date of seed- 

 ing was March 29. Except in 1911, w T hen about half the varieties 

 were sown March 25 and the remainder about a month later, all 

 varieties have been sown on the same date. In 1907 the common 

 wheat was drilled at the rate of 5 pecks and the durum varieties at 

 fthe rate of 6 pecks to the acre. These rates have been reduced gradu- 

 ally, until in 1913 all varieties were sown at the rate of 50 pounds 

 '(3^ pecks) to the acre. The size of the plats has usually been one- 

 itenth or one-eleventh of an acre. 



