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    • Nitrogen Decision Aid

    Metadata Updated: December 2, 2025

    The Nitrogen Decision Aid is a computerized program that predicts the amount of N mineralized from planting to side-dress or 5-leaf growth-stage. By applying just enough N-fertilizer to reach the critical soil nitrate concentration it is possible reduce this waste. This model is designed for Northern climates that will have some frost in the soil during the winter.

    Each Year more than 10 billion kg of nitrogen fertilizer are applied to croplands in the United States at a cost of more that $3.5 billion (USDA Economics and Statistics System, 1998). It is estimated that the efficiency of this applied nitrogen (N) ranges from about 30% to about 70% (Pilbeam, 1998); thus, large amounts of fertilizer N are lost or wasted each year.

    The Nitrogen Decision Aid is a computerized program that predicts the amount of N mineralized from planting to side-dress or 5-leaf growth-stage. By applying just enough N-fertilizer to reach the critical soil nitrate concentration it is possible reduce this waste. This model is designed for Northern climates that will have some frost in the soil during the winter.


    Resources in this dataset:


    Access & Use Information

    Public: This dataset is intended for public access and use. License: Creative Commons CCZero

    Downloads & Resources

    Dates

    Metadata Created Date March 30, 2024
    Metadata Updated Date December 2, 2025

    Metadata Source

    Harvested from USDA JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 30, 2024
    Metadata Updated Date December 2, 2025
    Publisher Agricultural Research Service
    Maintainer
    Identifier 10113/AA22638
    Data Last Modified 2025-11-21
    Public Access Level public
    Bureau Code 005:18
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 350d680f-e4d3-4247-bb3d-9a6f7fc0d048
    Harvest Source Id d3fafa34-0cb9-48f1-ab1d-5b5fdc783806
    Harvest Source Title USDA JSON
    License https://creativecommons.org/publicdomain/zero/1.0/
    Old Spatial {"type": "Polygon", "coordinates": -97.2509765625, 43.334168282986, -97.2509765625, 48.872844743272, -91.1865234375, 48.872844743272, -91.1865234375, 43.334168282986, -97.2509765625, 43.334168282986}
    Program Code 005:040
    Source Datajson Identifier True
    Source Hash 12f9994f1e28d593a672550f3e4fd8d2b8482ff64ec1ca4e961076dd51034dca
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -97.2509765625, 43.334168282986, -97.2509765625, 48.872844743272, -91.1865234375, 48.872844743272, -91.1865234375, 43.334168282986, -97.2509765625, 43.334168282986}
    Temporal 1998-01-01/1998-01-01

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