IMPROVEMENT OF GHIEKA SPRING 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 duplicated 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 average actual and computed yields of Ghirka Spring 
wheat (C. I. No. 1517) used as a check and 30 pure lines selected therefrom, grown at the Dickinson 
substation in 1913 and 1914. 
In 1913 the entire 104 selections were 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 
lines. 
Samples of the grain from the 24 pure lines grown in field plats 
were used in milling and baking tests in cooperation with the North 
Dakota Agricultural Experiment Station. 
