Fertilizer Nitrogen: Contribution to Nitrate in Surface Water in a Corn Belt Watershed

DOI Web Site 被引用文献11件
  • Daniel H. Kohl
    Center for the Biology of Natural Systems,Washington University, St.Louis, Missouri 63130
  • Georgia B. Shearer
    Center for the Biology of Natural Systems,Washington University, St.Louis, Missouri 63130
  • Barry Commoner
    Center for the Biology of Natural Systems,Washington University, St.Louis, Missouri 63130

抄録

<jats:p>Measurements of nitrate concentration and relative enrichment in nitrogen-15 were made on samples of the surface waters of a typical Illinois corn belt watershed and the effluent of the subterranean tiles that drain the cropped land in the region. From these measurements, we estimate that at the time of peak nitrate concentration in the spring of 1970 a minimum of 55 to 60 percent of the nitrogen found as nitrate in the surface waters of this watershed originated from fertilizer nitrogen.</jats:p>

収録刊行物

  • Science

    Science 174 (4016), 1331-1334, 1971-12-24

    American Association for the Advancement of Science (AAAS)

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