• Estimates of nitrogen-fertilizer sales for the conterminous United States in 1988

    Metadata Updated: November 1, 2017

    This coverage contains estimates of nitrogen-fertilizer sales for the conterminous United States in 1988 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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    Dates

    Metadata Date November 8, 2004
    Metadata Created Date November 1, 2017
    Metadata Updated Date November 1, 2017
    Reference Date(s) January 1, 1994 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from USGS-Harvest

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    Additional Metadata

    Resource Type Dataset
    Metadata Date November 8, 2004
    Metadata Created Date November 1, 2017
    Metadata Updated Date November 1, 2017
    Reference Date(s) January 1, 1994 (publication)
    Responsible Party U.S. Geological Survey, Water Resources Div. (WRD) (Point of Contact)
    Contact Email
    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 fertilize 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 1988 amounts. Estimates of nitrogen-fertilizer sales by county were constructed from a combination of data reported to State regulatory agencies and from data in the 1987 Census of Agriculture. Fertilizer-sales data submitted 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. Boundaries near the edges of sections have been adjusted in edgematching. Polygons that extend into the water (an ocean or the Great Lakes) should be considered arbitrary., Access Constraints: (describe any restrictions or legal prerequisites for accessing the data set. Put "None" if there are no restrictions)
    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/nit88.gif
    Graphic Preview Type GIF
    Guid
    Harvest Object Id d3e4f5b9-134c-45b9-990f-72197df48cd2
    Harvest Source Id 00f54869-3a43-480d-a67c-0ba115f5d739
    Harvest Source Title USGS-Harvest
    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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