USE OF FERTILIZERS. 



Farmers use fertilizers in the same way that manufacturers 

 'use their raw materials. And the same business methods and 

 rules apply in each case. Nitrogen, Phosphoric acid and Pot- 

 ash, or the crude materials containing these are the farmers 

 raw materials and from them he hopes to manufacture corn, 

 oats, potatoes, hay fruit etc., through the agency of the soil 

 which is his machine. The following points should be duly con- 

 sidered in this manufacturing process: 



First. The amount of material required by various crops. 



Second. The utilization of all waste products, such as an- 

 imal manures, ashes etc., which are produced on the farm. 



Third. The purchase of the most economical fertilizing 

 materials as an aid to these home produced fertilizers. 



Fourth. The use of all fertilizers in such a way as to get 

 the most profitable returns, in as short a time as possible. 



In all of this the final result must be determined in dollars 

 and cents for this is the true business standard in farming as 

 in manufacturing. 



The following table shows the plant food taken from the 

 soil by various farm crops. 



'■^Deficient Plant Food" removed by various Crops. 



