IMPROVEMENT OF GITIRKA SPRING WHEAT. 19 
Experiments are being made at the Dickinson (N. Dak.) substation 
to improve both, the yield and the quality of the Ghirka wheat by 
isolating superior pure lines. Many pure lines 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 quality. They also compare favorably with the standard spring- 
wheats of the Great Plains area in quality as well as in yield. The 
selections are also proving valuable material for crossing with va- 
rieties possessing greater rust resistance and high quality of grain. 
From the data given it is shown that improvement in yield and 
quality is possible from pure-line selection and that good results are 
being obtained. 
