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This article in SSSAJ

  1. Vol. 29 No. 4, p. 481-482
     
    Received: Sept 25, 1964
    Accepted: Mar 26, 1965


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doi:10.2136/sssaj1965.03615995002900040036x

Effect of Drying on Volcanic Ash Soils in Chile1

  1. E. B. Schalscha,
  2. C. Gonzalez,
  3. I. Vergara,
  4. G. Galindo and
  5. A. Schatz
  1. University of Chile, Santiago, Chile

Abstract

Abstract

Air drying produces significant irreversible changes in volcanic ash soils. Air-dried samples with clay texture in the field appear to have sandy texture according to laboratory analyses. Air-drying also markedly affects cation-exchange capacity, soluble P, and soluble Fe. The nature and extent of changes in the latter two properties vary with different methods of analysis. Air-drying decreases the pH slightly. These results show that mechanical and chemical analyses of volcanic ash soils more accurately indicate field conditions when samples contain moisture at field capacity.

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