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This article in SSSAJ

  1. Vol. 33 No. 5, p. 813-814
    Received: May 2, 1969
    Accepted: June 4, 1969

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Soil Perfusion under Controlled Conditions of Soil Moisture Content and Soil Atmospheric Composition1

  1. R. E. Wildung,
  2. J. W. Biggar and
  3. G. Chesters2



A new soil perfusion system is described which allows the continuous recycling of an aqueous solution through a soil column under controlled environmental conditions. The system consists essentially of a perforated inner column for soil, jacketed by an outer column in which constant air pressure is maintained. Precise control of soil moisture content and soil atmospheric composition during perfusion is accomplished by regulation of pressure and composition of gases surrounding the soil column.

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