FARM MANURES CONCLUDED igc 



A large part of the nitrogen found in these plants 

 was undoubtedly taken by the roots from the soil 

 air. 



Besides adding humus and nitrogen to the soil 

 the legumes, being mostly deep-rooted plants, are 

 able to take from the subsoil food which is out of 

 reach of other plants. This food is distributed 

 throughout the plant and when the plant is plowed 

 under the food is deposited in the upper soil for the 

 use of shallow-rooted plants. 



BENEFITS 



The benefits derived from green crop manuring 

 then are as follows : 



We add to the soil organic matter or humus which 

 is so helpful in bringing about the conditions neces- 

 sary for root growth. 



By using the legumes for our green manure crops 

 we may supply the soil with nitrogen taken from 

 the air. 



We return to the surface soil not only the plant 

 food taken from it but also plant food brought from 

 the subsoil by the roots of the green manure plants. 



CHARACTER OF BEST PLANTS FOR GREEN CROP 

 MANURING 



The plants best adapted to green crop manuring 

 are deep-rooted, heavy-foliaged plants. Of these 

 the legumes are by far the best, as they collect the 



