Farm Manure. 



Per cent of Gain in Yield from Manure. 



Fresh Manure Leached Manure 



The common practice of open yard feeding, where the manure 

 produced during the winter is spread over a considerable area 

 and often allowed to remain until late spring, or even into the 

 fall, is most wasteful of the fertilizing material it contains. It is 

 safe to say that at least one-half of the fertilizing value of the 

 manure is lost by such practice. This method of feeding is ex- 

 tremely common and in the corn belt of this country it is not 

 unusual to see a large feeding yard covered to a considerable 

 depth with manure, under ideal conditions for maximum leach- 

 ing. 



Losses by fermentation. Manure is very easily decomposed 

 and the losses resulting from such decomposition fall entirely on 

 the most valuable constituent of the manure, the nitrogen. 

 Through the process of fermentation no potash or phosphoric 

 acid is lost. These manurial ingredients are wasted only through 

 leaching. 



