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This article in SSSAJ

  1. Vol. 31 No. 5, p. 704-705
    Received: Mar 16, 1967
    Accepted: June 13, 1967

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A Method for Investigating the Chemical Heterogeneity of Soil Material within Natural Soil Aggregates1

  1. R. F. Holt and
  2. D. R. Timmons2



A procedure is described to study chemical heterogeneity of soil material within natural aggregates. Soil from aggregate surfaces is separated from interior material by a freezing and thawing process. Results for two soils indicate higher concentrations of water-soluble elements in the exterior soil material, whereas, the interior material contained about equal or slightly greater amounts of extractable elements than the exterior material.

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