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This article in JEQ

  1. Vol. 2 No. 4, p. 455-458
     
    Received: July 18, 1972


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doi:10.2134/jeq1973.00472425000200040010x

Minimizing Nitrate Seepage from the Hula Valley into Lake Kinneret (Sea of Galilee): I. Enhancement of Nitrate Reduction by Sprinkling and Flooding1

  1. A. Raveh and
  2. Y. Avnimelech2

Abstract

Abstract

Decomposition of organic matter in the drained soils of the Hula Valley leads to the accumulation of nitrates. These are leached during the rainy season to the Jordan River and endanger Lake Kinneret. Field studies have shown that nitrates can be reduced through the use of the irrigation systems exisitng in the area. A treatment of either sprinkling or flooding by raising the water table reduced the nitrate concentration to about half of its original amount. Both treatments induced anaerobic conditions in the soil and reduced the nitrate contents, probably by denitrification. The efficiency of the reduction depends on the existence of labile organic substrates in the soil.

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