2o5 SOILING CROPS AND THE SILO. 



America. It is already distributed more or less 

 over nearly all the cultivated portions of the northern 

 and central states, and in many sections of the south- 

 ern states it has also been successfully introduced. 

 It would seem to have the highest adaptation for clay 

 loam soils which were formerly covered with forests 

 of hard wood trees, or of hard and soft woods grow- 

 ing together. When these were cleared away it 

 seemed to come in, as it were, spontaneously, but 

 never to the extent of becoming a hindrance to culti-. 

 vation. The ordinary black loam soils of the prairie 

 are not so well adapted to its growth, although it 

 may be grown on these with more or less of success. 

 The soils of the Rocky mountain valleys would seem 

 to have supreme adaptation for growing this plant 

 when supplied with sufficient moisture, and the same 

 is true of the arable lands west of the Cascade moun- 

 tains. 



White clover is probably the hardiest of all the 

 species of clover, hence it can be grown far to the 

 north. As is generally known white clover is com- 

 monly grown for pasture and usually in conjunction 

 with blue grass. Where it has been grown in rota- 

 tions that do not cover many seasons, it does not 

 ordinarily require to be si:)wn again when laying 

 down pastures, as in these the plants will soon appear 

 and sometimes to the extent of forming one of the 

 chief food elements. The plants not only produce 

 others from seed, but also by means of runners which 

 at intervals send down roots into the soil and form 

 fresh plants. But when it is to be grown as a factor 

 of a hay crop it ought to be sown along with the 

 other seeds that are designed to furnish the hay, 

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