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This article in SSSAJ

  1. Vol. 38 No. 3, p. 433-436
    Received: Nov 6, 1973
    Accepted: Feb 6, 1974

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Soil Factors Affecting the Adsorption of 2,4,5-T1

  1. G. A. O'Connor and
  2. J. U. Anderson2



Factors expected to affect the adsorption of 2,4,5-T (2,4,5-trichlorophenoxyacetic acid) on four soils of the western USA were studied. The effects were examined by equilibrating solutions of 2,4,5-T with soils in their natural condition, after Casaturation, and with samples of the same soils treated to remove soil constituents expected to affect adsorption. Organic matter was an important contributor to 2,4,5-T adsorption, and, in some soils, was the only adsorbent of significance. Oxides of Fe and Al did not contribute much to adsorption in the soils studied although the pH of soils studied was only slightly acid to alkaline. Allophane was apparently an effective adsorbent when the Si/Al ratio of the allophane was high.

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