Estimates of nitrogen-fertilizer sales for the conterminous United States in 1985

Metadata Updated: November 12, 2020

This coverage contains estimates of nitrogen-fertilizer sales for the conterminous United States in 1985 as reported by the U.S. Environmental Protection Agency (1990) and by Jerald Fletcher (West Virginia University, written commun., 1992). Nitrogen-fertilizer sales estimates in this coverage are reported for each county polygon in tons of actual nutrient sold (inorganic nitrogen, phosphate, and potash) as distinct from total tons of fertilizer product. The data are summarized for fertilizer years (i.e. the 1987 fertilizer year runs from July 1, 1986 to June 30, 1987). 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) file representing the 1:2,000,000-scale map in the National Atlas of the United States (1970). Nitrogen-fertilizer Commercial fertilizer Fertilizer use Counties United States

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date November 8, 2004
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 1994 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from DOI Open Data

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Illlustration of data set

Additional Metadata

Resource Type Dataset
Metadata Date November 8, 2004
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 1994 (publication)
Responsible Party U.S. Geological Survey, Water Resources Div. (WRD) (Point of Contact)
Contact Email
Guid
Access Constraints Use Constraints: NITROGEN-FERTILIZER SALES DATA Estimates of nitrogen-fertilizer sales by county were generated by the U.S. Environmental Protection Agency (1990) and by Jerald Fletcher (West Virginia University, written commun., 1992) by using the following procedure: (1) compiling annual State fertilizer-sales data reported as tonnages to the National Fertilizer and Environmental Research Center of the TVA; (2) calculating the ratio of expenditures for commercial fertilizers by county to expenditures for commercial fertilizers by States from the 1987 Census of Agriculture (U.S. Department of Commerce, 1989a); and (3) computing annual county-level nitrogen-fertilizer sales, in tons, by multiplying estimates of annual States sales by the ratio of county expenditures to States expenditures. In some counties no fertilizer sales were reported, but some fertiliz use was reported in the Census Data. Although fertilizer expenditures estimates (in $1,000) represent the 1987 growing year, the nitrogen-fertilizer sales estimates (tons) generally reflect 1985 amounts. Estimates of nitrogen-fertilizer sales by county were constructed fro a combination of data reported to State regulatory agencies and from data in the 1987 Census of Agriculture. Fertilizer-sales data submitte annually to State regulatory agencies by fertilizer dealers reflect total sales without regard to the land use for which it was bought, or the State (or county) in which the fertilizer was actually used. In the Census of Agriculture sampling and statistics were used to account for nonresponding farm operations (U.S. Department of Commerce, 1989b) Thus, the information that describes county-level fertilizer sales is subject to sampling variability as well as reporting and coverage errors. Census disclosure rules also prevent the publication of information that would reveal the operation of individual farms. COUNTY BOUNDARIES The original files for this map were provided in 15 sections. Boundarie near the edges of sections have been adjusted in edgematching. Polygons that extend into the water (an ocean or the Great Lakes) shoul be considered arbitrary., Access Constraints: None
Bbox East Long -65.25698378
Bbox North Lat 48.26194027
Bbox South Lat 22.67774911
Bbox West Long -128.07002717
Coupled Resource
Frequency Of Update notPlanned
Graphic Preview Description Illlustration of data set
Graphic Preview File https://water.usgs.gov/GIS/browse/nit85.gif
Graphic Preview Type GIF
Licence Although this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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