IMPEOVEMENT OF GHIEKA SPRING WHEAT. 19 



Expermients are being made at the Dickinson (N. Dak.) substation 

 to improve both tlie yield and the quahty of the Ghirka wheat by 

 isolatmg superior pure Imes. Many pure hnes have been tested, 

 and among them selections Nos. 4, 5, and 66 have thus far proved 

 superior to the others and to the original mass variety in both yield 

 and quahty. They also compare favorably with the standard spring- 

 wheats of the Great Plains area m quality as well as in yield. The 

 selections are also proving valuable material for crossmg with va- 

 rieties possessmg greater rust resistance and high quality of grain. 



From the data given it is shown that improvement in yield and 

 quahty is possible from pure-line selection and that good results are 

 being obtamed. 



