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This article in SSSAJ

  1. Vol. 32 No. 5, p. 652-656
     
    Received: Dec 5, 1967
    Published: Sept, 1968


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doi:10.2136/sssaj1968.03615995003200050022x

Leaching Requirement for Exchangeable-Sodium Control1

  1. J. D. Rhoades2

Abstract

Abstract

A method is described for estimating the leaching fraction required to keep the sodium-adsorption-ratio (SAR) at the lower limit of the plant-rooting zone below some limiting value. The choice of the limiting SAR depends on plant tolerances to sodium and on soil permeability. The method is based on an equation that satisfactorily predicts the SAR values of waters draining from a calcareous soil under various leaching regimes.

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