WHEAT 131 



land caused by continuous cropping with grain 

 which is harvested with the "combine" that 

 scatters the weed seeds again. Hence the " spread- 

 ing" varieties are not well adapted to the pre- 

 vailing conditions and the general culture methods. 

 The "spreading" varieties, such as Turkey Red, 

 Crimean and Gold Coin are grown in limited area 

 by irrigation, and such varieties may be suited 

 to small farming where rotation of crops is prac- 

 ticed and where the wheat is harvested with the 

 binder. 



WINTER OR SPRING WHEAT 



Winter wheat is grown almost exclusively in 

 California. In Washington and Oregon the areas 

 devoted to spring wheat and winter wheat are 

 about equal. There seems to be no settled prac- 

 tice among the wheat growers, either as regards 

 season of planting or variety grown. Thus winter 

 wheat may be grown largely in one locality, while 

 an adjacent locality, grows spring wheat. 

 Club and blue stem are the principal spring 

 varieties; winter fife and Turkey are the common 

 winter varieties. 



WHEAT IMPROVEMENT 



A successful attempt has been made by the 

 Washington experiment station to improve the 

 varieties of wheat by crossing the soft, erect 

 spring club varieties with the hard winter wheat 

 of the Turkey type to secure hardy, erect winter 

 varieties which shall be non-shattering and of 

 better milling quality than the original club wheat. 



