34 BULLETIN 402y U. S. DEPARTMENT OF AGEICULTUEE. 



21.1 bushels. Ghirka Spring wheat, of the Fife group, yielded 18.6 

 bushels. 



Rate-of-seeding tests with winter wheat have not been satisfactory, 

 but 3 pecks is thought to be the best rate. 



Date-of-seeding tests with winter wheat indicate that the period 

 between September 15 and October 15 is the best time to sow. 



A rate-of-seeding test with spring wheat indicates that sowing 3 

 to 4 pecks will produce the best yields. 



Considering yields per acre and market value, winter wheat is more 

 profitable than spring wheat and spring durum more profitable than 

 spring common wheat. 



The best varieties of oats tested in the eight years, 1908 to 1915, 

 are Kherson, with an average yield of 44.7 bushels, and Colorado 

 No. 37, yielding 43.9 bushels. The Kherson is an early variety and 

 Colorado No. 37 a midseason variety. Late varieties have yielded 

 much less than the early or midseason varieties. 



Rate-of-seeding tests with the Kherson oats indicate that the best 

 yields are obtained by sowing 4 pecks per acre. 



The best varieties of barley tested in the eight years are the Hann- 

 chen (C. I. No. 602), with an average yield of 38.7 bushels, and the 

 Coast (C. I. No. 690), with a yield of 38.0 bushels. The 2-rowed 

 group of barleys has averaged better than the 6-rowed group. 



Winter rye has proven inferior in value to wheat. 



Winter emmer has not been able to withstand winterkilling suffi- 

 ciently. The 8-year average yield is 14.2 bushels. 



White Spring emmer has averaged 30.3 bushels per acre and is 

 therefore inferior to wheat or barley. 



Flax has not produced well on account of its inability to success- 

 fully compete with weeds. 



Proso, grown in field plats for five years, has averaged 23.1 bushels. 

 Its main value seems to be as a catch crop. 



No grain sorghum has made good yields. Most varieties fail to 

 mature. The 5-year average yield of Manchu Brown kaoliang is 

 15.4 bushels per acre. 



