COVER CROPS 



177 



SORGHUM. 



Sorghum draws greatly upon the soil. It chokes 

 noxious weeds, shades the land, and produces abund- 

 ant humus making substance. "It resists drought 

 better than any other succulent forage crop." (Neb. 

 Bull., 84.) It is immune to nematodes and wilt or 

 root-rot, for which reason in several seasons will 

 starve the eelworms, and fungi, if other vegetation 

 is subdued. 



SPELT. 



An importation from Russia, having habits simi- 

 lar to emmer and wheat. It grows well on thin 

 soils and at least one variety resists the coldest 

 weather of this country. It resembles wheat and 

 is useful in arid regions. " Their ability to resist 

 drought is remarkable, in spite of the fact that they 

 are mostly spring varieties." (U. S. Cir. P. L, 12.) 



TURNIPS. 



This vegetable withstands winters in the South, 

 adds large quantities of moisture and humus to 

 the soil and protects from leaching. 



WHEAT. 



More than thirty varieties are frost resistant; 

 they all improve tilth, prevent leaching and smoth- 

 er weeds. 



