THE FARM SCHEME 



in commercial fertilizers? No satisfactory 

 cropping system can be devised at the pres- 

 ent prices of farm products and cost of 

 fertilizers for the production of the ordi- 

 nary cereals and hay that does not include 

 the production of some legume. Assuming a 

 legume in the cropping scheme, the fertility 

 of the soil may be maintained by yard ma- 

 nure alone or by commercial fertilizers 

 alone. Illustrations of both methods are to 

 be found in actual practice. Generally 

 speaking, however, the use of yard manure 

 supplemented with commercial fertilizers 

 will be found more scientific and in the end 

 the most economical. 



A factor entering into this problem will 

 be the amount of purchased feed. If con- 

 siderable amounts of purchased feeds are 

 used and the resulting manure carefully pre- 

 served and judiciously applied, the com- 

 mercial fertilizers required will be reduced 

 to the minimum. 



A concrete illustration may bring out the 

 philosophy underlying farm schemes better 

 than abstract problems. 



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