POTATOES 221 



Fertilizers. From 1,000 to 1,500 pounds 

 of a complete fertilizer is preferably used 

 with the crop. About 2 or 3% nitrogen, 

 6 to 8% phosphoric acid and 10 to 12% pot- 

 ash in sulphate form will give good results. 

 From 500 to 700 pounds can be applied in the 

 drill, and the remainder broadcasted. 

 Where new muck is being developed and 

 potatoes are to be planted as a first crop, very 

 little if any nitrogen will be found neces- 

 sary. About 8% phosphoric acid and 10% 

 potash at the rate of 800 to 1,000 pounds an 

 acre will often give the best returns on new 

 land. 



The fertilizers now most generally used 

 are the ready mixed sort, costing from 

 $35.00 to $45.00 a ton. In some cases, the 

 chemicals are bought seperately and mixed 

 at the farm, thus saving from $5.00 to $10.00 

 by this operation. The use of stable manure 

 directly for the potato crop is not now 

 generally practiced. If it is desired to use a 

 home-mixed fertilizer, one of the following 

 mixtures will furnish the plant food re- 

 quired. 



Formula : 



Nitrate of soda 200 pounds 



High grade tankage 600 " 



Acid phosphate 800 



Sulphate of potash 400 " 



