196 THE BOOK OF VEGETABLES 



Soil-inoculation of nitrogen-gathering bacteria (see 

 Bulletin No. 71, Bureau of Plant Industry) is possible 

 and under the right circumstances effective by means 

 of cultures which can be obtained of the Bureau of 

 Plant Industry, Washington, D. C. Or buy of private 

 firms, whose product, however, is not always good. 



Distances are according to variety. Planting in 

 double rows, six to eight inches apart, is recommended 

 for all kinds of Peas. Spaces between the double rows 

 should be eighteen inches to four feet, according to 

 to variety. 



Depth is somewhat according to season, but also to 

 the nature of the land. Early Peas in heavy land may 

 go one inch deep ; in light land about two inches. Later 

 in the season plant two to three inches and in June sow 

 in trenches five to six inches deep, and fill in as the 

 plants grow. In porous soil plant deeper, in heavy land 

 more shallow. 



Seed should be sowed thickly for the early crop, for 

 the later about one-half to one inch apart, the dwarfs 

 the closest together. Soak the seed after the ground is 

 warm. 



Sow smooth Peas as soon as the ground can be 

 worked in spring. Peas and onions are the earliest to 

 be sowed. Sow wrinkled Peas when the heavy frosts are 

 past, about the middle of April. From that time on> 

 sow every ten days for succession until early June. Sow 

 again in August, early varieties for a fall crop. 



