MIXTURES 431 



mountain valleys at high elevations. At present they are grown 

 extensively in Canada, Wisconsin, and Michigan, and their culture 

 is developing through the Rocky Mountain region to southern 

 Colorado and also in the northwestern States. 



Field peas grow on practically all types of soil, and are one of 

 the best crops for heavy clay. While they do best on a limestone 

 soil, yet they have a wide range of adaptation and will do well on 

 soils quite deficient in lime. 



Culture. About a dozen varieties have attained importance. 

 The most popular and best early varieties in Canada are Arthur, 



FIG. 184. Mixture of field peas with oats. 



Golden Vine, and Chancellor. For medium to late, the Marrow- 

 fats and Prussian Blue. 



Field peas are usually sown early, or at about the same time 

 that ordinary spring grains are sown. Later sowings may be made 

 for several weeks, but usually the best yield is secured from the 

 earliest sowings. From one to three bushels of seed per acre are 

 sown, according to size of seed, and size of plant. The seed is large 

 and should be covered two to three inches deep. 



Mixtures. Field peas are not generally sown alone, as the vines 

 are so prostrate that it is difficult to harvest them. Also the yield 



