. Yearbook of agriculture . wing to the smaller amount or absence of crab grass, thehoe work is comparatively small and wdiere transient laborcan be obtained to pick the cotton, 4-mule implements arefrequently used in preparing the land and 2-mule imple-ments in cultivating it. The newest form of cotton cultivation in the UnitedStates has developed in the irrigated districts of the South-west. Here the essentially distinctive features are level-ing the land so that the entire field may be irrigated uni- 99912—YBK 1921 23 348 Yearbook of the /department of Agriculture, 1921. formly and regulati
. Yearbook of agriculture . wing to the smaller amount or absence of crab grass, thehoe work is comparatively small and wdiere transient laborcan be obtained to pick the cotton, 4-mule implements arefrequently used in preparing the land and 2-mule imple-ments in cultivating it. The newest form of cotton cultivation in the UnitedStates has developed in the irrigated districts of the South-west. Here the essentially distinctive features are level-ing the land so that the entire field may be irrigated uni- 99912—YBK 1921 23 348 Yearbook of the /department of Agriculture, 1921. formly and regulating the water so as to produce the de-sired results in producing the cotton. Another special kindof culture is used in producing the sea-island cotton ofSouth Carolina and Georgia. Fertilizers. Commercial fertilizers are extensively used in the production of cotton in the Southeastern States. (See Fig. 21.)Comparing Figure 21 with Figure 13, the heaviest use offertilizers is seen to be on the soils of the Coastal Plains of. EXPENDITURE FOR FERTIUZER 1919 STATE DOLLARS STATE DOLLARS $52346,795 L«.... $3340,469 48,796,694 Tenn., 3325,133 CU ... 46,196,434 2372,678 14,066,108 Tm. .. 1331,207 Miu .. 4,288,165 452,492 Fig. 21.—Distribution of the expenditure for fertilizers as reported by thecensus of 1919. The heaviest use of fertilizers is on the Coastal Plainand Iiedmont of the Carolinas and Georgia. Very little is used west ofAlabama. Conipare the distribution of expenditures for fertilizers withdistribution of cotton production (Fig. 9). Xorth Carolina, South Carolina, and Georgia, and also toa considerable extent upon the soils of the Piedmont of theseStates. The fertilizers most generally used consist of acid phos-phate, kainit. muriate of potash, and nitrate of soda. Inmany regions the greatest outlay of cash in producing thecrop is for the fertilizers. After labor, it is the most im-portant factor in the cost of producing cotton in theseE
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