72 BULLETIN 1039, U. S. DEPARTMENT OF AGRICULTTJEE. 



small yields on irrigated land. Winter rye is not as productive as 

 winter wheat. Buckwheat has not given good yields on irrigated 

 land at Newell. 



The highest yielding varieties of oats on irrigated land are Silver- 

 mine and White Russian. The Silvermine oat produced the highest 

 yields when sown at the rate of 8 pecks per acre. 



Chevalier II and Trebi barley have yielded best under irrigation, 



Proso is not a very successful crop on irrigated land. 



Mixtures of wheat, oats, and barley have not produced signifi- 

 cantly higher yields of grain than the average of the crops grown 

 alone. Mixtures of wheat and flax have yielded more than the crops 

 grown alone, but wheat predominates in the mixture. 



The Damont and Reserve varieties of flax have given the highest 

 yields on irrigated land. These varieties also yielded best on the dry 

 land. Flax under irrigation should be sown at the rate of 30 pounds 

 per acre. Flax sown between May 15 and 26 produced the highest 

 average yields on irrigated land. 



Corn ground should not be plowed or subsoiled before being sown 

 to small grains or flax. 



The following varieties of grain are recommended for growing on 

 irrigated land: 



Spring wheat. — Kubanka, INIarquis, Barley. — Chevalier, Trebi. 



Winter tclieat. — Turkey or Kharkof. Flax. — Damont, Reserve. 



Oats. — Silvermine, White Russian. 



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