WHITE CLOVER 265 



contain under normal conditions. The more firm 

 these soils are, the better will the clover grow in 

 them, and vice versa. This is equivalent to say- 

 ing that the more clay they contain, the bettei" will 

 the white clover grow in them. 



Where the humus soils of the prairies are deep 

 and are underlaid with clay, white clover will grow 

 much better in the subsoil, if laid bare, than in 

 the surface soil. Prairie soils which .lift with the 

 wind are ill adapted to the growth of this plant, 

 whatsoever may be their composition. Much of the 

 soil in the semi-arid belt would grow this plant in 

 fine form, but want of moisture, where irrigation 

 is absent makes its growth prohibitory in a large 

 portion of this area. On ordinary slough soils, this 

 clover finds a congenial home, but it will not grow 

 quite so well, relatively, in these as alsike clover. On 

 sandy soils, such as those on which Jack pine and 

 Norway pine (Finns resinosa) grow, this plant will 

 maintain itself, and in wet seasons will make con- 

 siderable showing on these; but in very dry seasons 

 the plants will die, the growth the following season 

 coming from seeds already in the soil. In the soils of 

 the extreme South, the inability of white clover to 

 make a good showing is probably more the result of 

 summer heat than of want of power in the plants to 

 gather food. In those of the Southwest, want of 

 moisture and excessive heat render its growth, in a 

 sense, prohibitory. 



Place in the Rotation. — Since white clover is 

 usually not sown for meadow, but is rather sown 

 for pasture, it can scarcely be called a rotation plant 



