IMPKOVEMENT OF GHIEKA SPEING WHEAT. 



13 



the seed. Considerable variation was observed in the different pure 

 lines, not only in respect to yield but also in the color and texture 

 of the kernel, morphological characters of the plant, etc. 



In 1912 the same 104 selections were sown in duphcated 17-foot 

 rows with checks. About 20 were sown also in hundredth-acre 

 plats. These tests were all destroyed by hail. 



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Fig. 6.— Diagram showing the annual and avora^o actual and computed yields of fJhirka Spring 

 wheat (C. I. No. 1517) ased as a check and 30 pure lines selected therefrom, grown at the Dickinson 

 substation in lOl.'J and 1914. 



In 1013 the entire 104 selections wore again sown in 17-foot rows 

 from reserve stocks of seed. In addition, 86 of them were grown in 

 108-foot rows and 24 in plats (fig. 5) of one-eightieth acre. This series 

 of tests gave considerable information on the behavior of these pure 

 linos. 



Samples of the grain from Ui(> 21 pure linos grown in field plats 

 wore used in milling and bilking Icsts in cooperation with the North 

 Dakota Agricultural iCxp(!rimcnt Station. 



