226 



ECONOMIC PLANTS 



the Russian brome grass and western rye grass. Ken- 

 tucky bluegrass is important for pasturage in a large 



part of this country, 

 but little used for 

 hay. Johnson grass 

 is the best hay grass 

 of the southern 

 states, but is a very 

 objectionable weed 

 in tilled land, while 

 Bermuda grass 

 forms their best 

 pasture sod and also 

 makes good hay 

 when grown in rich 

 land. Quack grass, 

 a persistent grower, 

 should never be 

 sown, for it is hard 

 to eradicate it after 

 it once gets started. 

 Sorghum is a hardy 

 giant grass that is 

 grown both for 

 sirup and for hay. 

 Millet in several varieties is frequently grown for hay. 

 Of the legumes red clover, alsike clover, and alfalfa form 

 the most important hay crops, the first ranking next 

 to timothy, with which it is often mixed as a producer. 

 Alsike clover is grown on soil too rich or too wet or 

 too dry for red clover to thrive. Its introduction east 

 of the Mississippi has been followed by increased pro- 

 duction and widespread popularity. 



FIG. 115. Brome Grass. 



