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Journal of Environmental Quality Abstract -

Agricultural Phosphorus and Eutrophication: A Symposium Overview


This article in JEQ

  1. Vol. 27 No. 2, p. 251-257
    Received: Feb 25, 1997

    * Corresponding author(s): tdaniel@comp.uark.edu
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  1. T. C. Daniel *,
  2. A. N. Sharpley and
  3. J. L. Lemunyon
  1. Dep. of Agronomy, Plant Sciences 115. Univ. of Arkansas, Fayetteville, AR 72701;
    USDA-ARS, Pasture Systems and Watershed Manage, Res. Lab., Curtin Road, University Park, PA 16802-3702;
    USDA-NRCS, South National Technical Center, 320 West Way Place, Suite 511, Arlington, TX 76018.



Phosphorus in runoff from agricultural land is an important component of nonpoint-source pollution and can accelerate eutrophication of lakes and streams. Long-term land application of P as fertilizer and animal wastes has resulted in elevated levels of soil P in many locations in the USA. Problems with soils high in P are often aggravated by the proximity of many of these areas to P-sensitive water bodies, such as the Great Lakes, Chesapeake and Delaware Bays, Lake Okeechobee, and the Everglades. This paper provides a brief overview of the issues and options related to management of agricultural P that were discussed at a special symposium titled, “Agricultural Phosphorus and Eutrophication,” held at the November 1996 American Society of Agronomy annual meetings. Topics discussed at the symposium and reviewed here included the role of P in eutrophication; identification of P-sensitive water bodies; P transport mechanisms; chemical forms and fate of P; identification of P source areas; modeling of P transport; water quality criteria; and management of soil and manure P, off-farm P inputs, and P transport processes.

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