cropping, an average yield of 28^ bushels of wheat per Food for 

 acre has been maintained for the same period in a rota- *"* s 

 tion of corn, oats, wheat, clover and timothy. J 33 



In this test the unfertilized yield has been 9^ 

 bushels of wheat per acre. This yield has been increased 



Fertilizer Experiments with Oats on Clay Soil. 



Full Nitrate of Without Without Yield :|oz. grain 



Soda Phosphoric Acid. Potash. Without 



Fertilizing. Yield :foz. Yield: 2 oz. Nitrate of Soda. 



Yield : 3 oz. grain. grain. grain. 



to 28J/2 bushels by a fertilizer of the same composition 

 as that above mentioned, namely: 160 pounds acid 

 phosphate, 100 pounds of muriate of potash and the 

 equivalent of 160 pounds of Nitrate of Soda per acre. 

 In this case, as in the potato rotation, the increase 

 in the other crops of the rotation has more than paid 



