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This article in SSSAJ

  1. Vol. 46 No. 2, p. 435-438
    Received: Mar 26, 1981
    Accepted: Oct 5, 1981

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Heavy Water Tracing of Soil-Water Transfers Under Irrigation1

  1. P. Moutonnet and
  2. Ph. Couchat2



In soil columns, a horizon was labeled with heavy (deuterated) water (D2O), and the evolution of D2O during the experiment was monitored in situ by gamma-neutron counting. An automatic irrigation device was used for crop watering.

Based on the results of two consecutive experiments (H2O and D2O balance and water transfer analysis), the system was found to provide fully satisfactory irrigation. Deuterated water labeling, moreover, proved to be an effective technique for evaluating root uptake in a soil horizon.

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