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This article in SSSAJ

  1. Vol. 47 No. 3, p. 525-530
     
    Received: May 25, 1982
    Published: May, 1983


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doi:10.2136/sssaj1983.03615995004700030027x

The Effect of Liming and Leaching on the Sulfur-Supplying Capacity of Soils1

  1. Leonid Korentajer,
  2. Bernard H. Byrnes and
  3. Deborah T. Hellums2

Abstract

Abstract

A greenhouse experiment was conducted to evaluate the effect of liming and subsequent percolation on SO2-4 leaching from two soils differing substantially in their native soil S status. Two crops of corn (Zea mays L.) were then grown on the limed and leached soils with gypsum added in order to assess S crop response. With no liming, SO2-4 leaching losses in both soils were approximately 50% of those obtained at the highest liming rates (2.0–2.5 g/kg); however, the effect varied depending on the soil S status. In the soil with the higher level of adsorbed SO2-4 (35 µg/g of S), large losses were observed, particularly during the initial leaching period. In contrast, with the soil with the lower level of adsorbed SO2-4 (9 µg/g of S), the leaching losses were more gradual, and SO2-4 elution followed a chromatographic pattern commonly observed with nonsorbing ions. Possible explanations for these patterns are presented. Crop production and S uptake, particularly by the second crop, reflected the significant effects of liming and leaching on the available S status of the soils. The results indicate that acid soils that are limed and subsequently leached may rapidly become S deficient and that the relative amounts of adsorbed SO2-4 and mineralizable S are important factors in determining the magnitude of the liming effect.

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