be supplied before the wheat rotation is reached. In 

 many cases, simply top-dressing with the Nitrate will be 

 found effectual. In all cases where the acre yields have 

 fallen off, a top-dressing of Nitrate of Soda should be 

 applied. 



Professor Maercker states that Nitrate of Soda for 

 wheat is absolutely necessary under the conditions in 

 Germany, and that 100 pounds of Nitrate of Soda pro- 

 Wheat. 



Food for 

 Plants 



129 



#. 



j--v 



~. -^i^^f~"- iaiiiir 

 -- . i * 



.-W*' 1 



Wheat 14 Bushels. 



Average product per acre for 

 the U. S. of wheat with aver- 

 age farm fertilization 1910. 



Wheat 37 Bushels. 



The product of an acre of 

 wheat fertilized with Nitrate of 

 Soda, home mixed with phos- 

 phates and potash 1910. 



duces 300 to 400 pounds of grain and a corresponding 

 amount of straw. 



Drill in with the wheat in the fall a 

 mixture of 250 pounds of acid phosphate 

 and 50 pounds Nitrate of Soda per acre. 

 If your land is sandy, add 50 pounds of 

 sulphate of potash to the above. Early in the spring, 

 sow broadcast 100 pounds Nitrate of Soda per acre. 



Land sown to wheat in the fall and seeded down 



How to Apply 

 Nitrate of Soda 

 to Wheat. 



