IDEAS home Printed from https://ideas.repec.org/a/eee/jeeman/v130y2025ics0095069625000166.html
   My bibliography  Save this article

Agriculture’s nitrogen legacy

Author

Listed:
  • Metaxoglou, Konstantinos
  • Smith, Aaron

Abstract

Nitrogen pollution of waterways is a large global problem, particularly in regions with intensive cropland agriculture, such as the Mississippi River Basin. Unlike prior studies based on agronomic and hydrologic (ag-hydro) models, we collect detailed data from water quality monitors and employ panel data econometric methods to estimate the relationship between cropland and nitrogen pollution. We find an increase in nitrogen load in nearby downstream waterways associated with an additional corn acre upstream that is substantially smaller than the field-to-river adjusted loss per cropland acre based on ag-hydro models. Our findings are consistent with those of recent research documenting the accumulation of large amounts of nitrogen in subsurface soil and groundwater over several decades; this is surplus nitrogen that was applied to fields but has yet to appear in waterways. This legacy nitrogen eventually reaches streams and rivers exacerbating further nitrogen pollution leading to time lags in measurable water quality improvements following the implementation of mitigation practices and policies. In the presence of large amounts of legacy nitrogen, land retirement, and other on-farm mitigation practices, may not be cost effective. Downstream off-farm practices, such as the development of fluvial wetlands, which remove both legacy and new nitrogen, can be cost-effective.

Suggested Citation

  • Metaxoglou, Konstantinos & Smith, Aaron, 2025. "Agriculture’s nitrogen legacy," Journal of Environmental Economics and Management, Elsevier, vol. 130(C).
  • Handle: RePEc:eee:jeeman:v:130:y:2025:i:c:s0095069625000166
    DOI: 10.1016/j.jeem.2025.103132
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0095069625000166
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.jeem.2025.103132?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Keywords

    Crops; Environmental externalities; Hypoxia; Nutrient pollution; Legacy nitrogen;
    All these keywords.

    JEL classification:

    • Q15 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Land Ownership and Tenure; Land Reform; Land Use; Irrigation; Agriculture and Environment
    • Q48 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Government Policy
    • Q51 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Valuation of Environmental Effects
    • Q53 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Air Pollution; Water Pollution; Noise; Hazardous Waste; Solid Waste; Recycling
    • Q58 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environmental Economics: Government Policy

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:jeeman:v:130:y:2025:i:c:s0095069625000166. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/locate/inca/622870 .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.