420 



BOTANY OF CROP PLANTS 



Field or Canadian Field Peas. — These have smooth, hard, 

 rather angular seeds. They are gray-green, gray-yellowish, 

 or gray dotted with purple, blue, rust red or brownish spots. 

 Garden peas are sometimes used as a field crop. 



Fig. 175. — Pea pods showing types and range of variation. D, French can- 

 ning type smooth pea, French Canner; E, large podded wrinkled pea, Pride of 

 Market; F, fleshy or edible podded pea. Melting Sugar. {Afler Corbelt.) 



Field peas are successfully grown only in those regions with 

 a cool gfewing season, in fact, they will withstand quite 

 \^Q^-7 T- .ci. "^-Tigh temperatures accompanied by high 

 re .aic_ to decidedly injurious. Excellent crops 



are ^ - a-t 7,000 to 8,000 feet in the San Luis Valley of 

 Colorado.^ They do well on most types of soil. 



