FOOD FOR PLANTS 107 



Autumn dressings of Nitrate are used frequently 

 in Europe, and in connection with minerals a dress- 

 ing of as much as three hundred (300) pounds of 

 Nitrate per acre is used annually. 



Instructions for Using Nitrate on Oats. 



As soon as you sow the oats in the spring, apply 

 the Nitrate of Soda by broadcasting it evenly, by 

 hand or machine, over the entire surface of the oat 

 field at the rate of 100 pounds per acre. In bulk this 

 is equal to about one bushel. 



Formula for Oats. 



Nitrate alone 100 lbs. per acre 



or preferably 



Nitrate 150 lbs. per acre 



Acid Phosphate 150 lbs. per acre 



When potash salts can be conveniently obtained 

 we advise the use of fifty pounds of sulphate or 

 muriate of potash to the acre every other year. 



RYE. 



This is another illustration of the necessity of care 

 in the use of fertilizer Nitrogen. Rye does best on 

 light soils so long as they are not too sandy, but if 

 the soil is rich in vegetable matter, or if a fertilizer is 

 used containing much organic ammoniate, the grain 

 yield will be disappointing; the crop fails to mature 

 in season because the nitration of organic Nitrogen 

 or humus is generally greatest during the warm days 



