County-based estimates of nitrogen and phosphorus content of animal manure in the United States for 1982, 1987, and 1992.
This data set contains county estimates of nitrogen and
phosphorus content of animal wastes produced annually for the
years 1982, 1987, and 1992.  The estimates are based on animal
populations for those years from the 1992 Census of Agriculture
(U.S. Bureau of the Census, 1995) and methods for estimating the
nutrient …