Food for Plants. 



115 



the latter. The average fertilizer for wheat should con- 

 tain Nitrogen, ])hosphoric acid and potash. This fer- 

 tilizer is applied with the seed, and at the rate of 500 

 pounds to the acre. Nitrate of Soda is also applied 

 broadcast as a dressing, soon after the crop shows growth 

 in the spring, at the rate of 100 pounds per acre. Like 

 all grains, wlieat should have its Nitrate x)lant food early, 

 andin the highly availalile, easily digested nitrated foTm, 

 such as is only to be found commercially as Nitrate of 

 Soda. 



Wheat. 



Wheat — 14 Bushels. 

 Averag-e product per acre for 

 the U. S. of wheat with average 

 farm fertilization. 



Wheat — 37 Bushels. 

 The product of an acre of Avheat 

 fertilized with Nitrate of Soda, 

 phosphates and potash. 



The plant food needs of a crop of 30 bushels of wheat 

 per acre amounts to about 70 pounds of Nitrogen, 24 

 pounds of phosphoric acid, and 30 pounds of potash; this 

 includes the straw, chaff and stubble. One hundred 

 pounds of Nitrate of Soda supplies about 16 pounds of 

 Nitrogen, so that the quantity mentioned for application 

 is a minimum quantity. Much has been said of legume 



