398 



SOIL PHYSICS AND MANAGEMENT 



especially well adapted to this method. It must be remembered 

 that nitrogen is readily lost by leaching, especially after it becomes 

 available. 



It would be well to emphasize the necessity of turning the 

 legumes under instead of removing them. In many places the 

 legumes are made into hay and sold from the farm, or fed without 

 returning the manure. Under these circumstances very little is 

 accomplished toward permanent soil improvement by growing 

 legumes. 



Composition of Tops and Roots. Crops Seeded July 22 (Delaware Station) 



