County-Level Estimates of Nitrogen and Phosphorus Fertilizer Use in the United States, 1945 to 1985

USGS Open-File Report 90-130
By Richard B. Alexander and Richard A. Smith

Digital Fertilizer Use Data from Open-File Report 90-130

The data may be obtained in two forms, including ZIP archive files and ARC/INFO county coverage files.

For More Recent Nitrogen Fertilizer Use Data:

Annual nitrogen fertilizer use data are also available for 1985-91.

Citation: Battaglin, W.A. and Goolsby, D.A., 1994, U.S. Geological Survey Water-Resources Investigations Report 94-4176.

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Last modified: Mon Mar 8 13:55:26 EST 1999