214 



SOILS AND PLANT LIFE 



j'ield per acre steadily increases as one goes northward 

 throughout the United States to Canada, and the average 



weight per bushel 

 increases at the 

 same time. In the 

 South, the oats 

 commonly grown 

 are those which, 

 like winter wheat, 

 are sown in the 

 fall. Although not 

 so valuable a crop 

 as some others, oats 

 are grown exten- 

 sively in the United 

 States because the 

 crop fits well in the 

 rotation. 



147. Varieties of 

 Oats. — In color, 

 oats may be white, 

 yellow, red or black, 

 those of the first 

 two colors being 

 most commonly 

 grown. 



As in the case of 

 wheat, there are 

 two general classes 

 of oats ; viz., winter 

 oats and spring 

 oats. The former are grown in southern and Pacific states, 

 and, like corn and ^vinter wheat, are gradually moving 



Fig. 93. — Panicle of oats. 



