Estimates of agricultural-chemical use in counties in the conterminous United States as reported in the 1987 Census of Agriculture
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This coverage contains estimates of agricultural-chemical use in counties in the conterminous
United States as reported in the 1987 Census of Agriculture (U.S. Department of Commerce, 1989a).
Agricultural-chemical use data are reported as either acres on which used, tons, or as a percentage of
county area. Agricultural-chemical use estimates were generated from surveys of all farms where $1,000
or more of agricultural products were sold, or normally would have been sold, during the census year.
Most of the attributes summarized represent 1987 data, but some information from the 1982 Census of Agriculture also was included.
The polygons representing county boundaries in the conterminous United States, as well as lakes, estuaries, and other
nonland-area features were derived from the Digital Line Graph (DLG) files representing the 1:2,000,000-scale map in the
National Atlas of the United States (1970).
Agricultural chemicals
Census of Agriculture
Counties
United States
创建时间：
2016-10-29
