90 



Yearbook of the Department of Agriculture^ 192L 



Fig. 109. — Fertilizer is used at present principally on the more intensively cultivated 

 crops, particularly cotton, tobacco, fruit, and truck, including potatoes ; and almost wholly 

 as yet in the Eastern States, where the rainfall is heavier and the soils more leached. 

 About half of the expenditure in 1919 was in the Coastal Plain and Piedmont portions 

 of Geoi-gia, the Carolinas, and Virginia. Minor areas are the trucking districts of New 

 Jersey and Long Island, the tobacco-onion district of the Connecticut Valley, the Aroos- 

 took potato district in Maine, and the fruit-trucking district in southern California. 

 Especially significant and prophetic is the considerable expenditure shown in Ohio and 

 Indiana and even in Illinois and Iowa. 



Fig. 110. — The expenditure for labor in 1919 was greatest in the trucking, fruit, and 

 dairying areas, especially the coastal belt from Norfolk, Va., to Salem, Mass., the Ontario 

 lowland of New York, the Elgin dairy district of northern Illinois and southern Wis- 

 consin, and the irrigated valleys of the West. Heavv expenditure is also shown in most 

 of the Corn Belt, and somewhat less in the Winter and Spring Wheat Areas. Although 

 cotton is a crop requiring much more labor than any other major crop, the cash expendi- 

 ture is small in the Cotton Belt because most of the labor is furnished by croppers and 

 tenants. In the Black Prairie of Texas, however, many Mexicans are hired to pick 

 cotton. 



