108 



WHEAT 



North Dakota bulletin No. 100, by Shepperd 

 and Doneghue, are given below. 



TABLE V 



Showing increase in yield per acre of wheat after 

 various crops, compared with wheat after wheat. 



*Decrea3e. 



**There was 6.76 bushels increase in yield the fourth yoar. 



There WES no increase in yield of wheat, as an 

 average, after flax or other small grains. The 

 largest total increase in wheat yields for three 

 years was 19.68 bushels per acre, after rape. The 

 second largest was 17.84 bushels after corn. The 

 average "check" yield of wheat after wheat, in 

 corn series was 15.35 bushels per acre; in the rape 

 series, 16.14 bushels per acre. 



FERTILIZER NEEDS OF WHEAT 



The plant food constituents in a normal wheat 

 crop of twenty-five bushels per acre, also in a 

 normal crop of corn, oats, clover, alfalfa, and the 

 fertility in manure and some other fertilizers 

 together with its value, are given in Table VI. 



