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This article in SSSAJ

  1. Vol. 29 No. 5, p. 540-544
    Received: Mar 15, 1965
    Accepted: Apr 28, 1965

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The Movement of Sulfate Salts in Soils1

  1. A. R. Swoboda2 and
  2. G. W. Thomas3



The movement of potassium sulfate in columns of calcium-saturated Cecil soil was studied. The desorption by hydrolysis of adsorbed SO42- ions was found to influence the distribution of other ions in the columns. Leaching with 10.4 inches of water caused only slight hydrolysis of adsorbed SO42- and adsorbed cations. Excessive leaching with 104 and 207 inches of distilled water caused considerable hydrolysis and displacement of adsorbed SO42- as well as K+ and Ca2+.

The amount of hydrolysis in columns of calcium-saturated Yolo soil which does not adborb SO42- was found to be much lower than in the Cecil soil columns.

Soil profiles taken from central Piedmont of Virginia showed substantially the same distribution of SO42- as found in laboratory columns. The highest concentration of Mg2+ always was found to occur at the same depth as a maximum concentration of SO42-.

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