THE CLOVERS 



265 



than for hay or pasture. As a soil improver, it has no 

 equal in the corn belt states, since it produces a great vol- 

 ume of stems and leaves, which, when plowed under, add 

 large amounts of nitrogen and humus to the soil. Unlike 

 red clover, mammoth clover seeds abundantly the first 

 crop, and often a seed crop may be removed before plowing 

 it under. 



266. Cultural methods. Mammoth clover has adap- 

 tations to soil and climate similar to those of red clover. 



FIG. 93. Rolling down clover to be plowed under for green manure. 



It is, perhaps, somewhat better adapted to the poorer 

 types of soil than red clover, which increases its impor- 

 tance as a green manure crop, since it will grow well on 

 those soils that most greatly need assistance. The method 

 and rate of seeding is similar to that described for red 

 clover. When grown for both seed and green manure, it 

 is desirable to harvest the seed in such a manner as to 

 remove as little of the plant as possible. This may be 



