330 



STATE BOARD OP AGRICULTURE. 



in the spring. The yields of wheat, clover and corn value of increase, 

 cost of treatment and net value of increase per rotation are given in 

 Tables I and II. The clover yields for 1911 and the corn yields for 

 1911 and 1912 are not included because the treatment had not been 

 made and the clover yields for 1912 are not included because of irregu- 

 larity of growth due to soil variations. 



TABLE I.— RESULTS OF APPLICATION OF FERTILIZER TO WHEAT IN CORN, WHEAT, 



CLOVER ROTATION, 1911-1915. 



In compiling these data none of the yields of individual plats were 

 assumed to be in excess of those from other plats receiving the same 

 and additional fertilizer ingredients. 



TABLE II.— YIELDS PER ACRE OF CORN, SECOND YEAR AFTER FERTILIZED WHEAT, 

 IN A CORN, WHEAT AND CLOVER ROTATION, 1913-1916. 



The use of the fertilizer has resulted in a much larger increase in the 

 case of the wheat than either the corn or clover. However, the residual 

 effect of the fertilizer is very noticeable in the latter two crops. 



It will be noticed from a study of Table I that the highest value of in- 

 crease per rotation was secured from the use of the complete fertilizer, 

 the second highest from the acid phosphate and muriate of potash, third 

 from the nitrate of soda and acid phosphate, fourth from the acid phos- 

 phate and the least from the floats. The net value of the increase, i. e., 

 the profit after paying for the fertilizer, takes the same rank as above 

 though the net returns from the complete fertilizer are not greatly in 



