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Published in Soil Sci Soc Am J 49:746-750 (1985)
© 1985 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Retention and Transport of Sulfate in a Slightly Acid Forest Soil1

G. T. Weaver2, P. K. Khanna3 and F. Beese4

ABSTRACT

A shallow slightly acid Terra fusca (Rendolls) soil derived from triassic limestone contains substantial amounts of sulfate. Under high sulfate input, low pH and high salt input this soil can further retain sulfate. Soil chemical data indicate that this soil contains exchangeable Al and H. This finding and the analysis of the equilibrium soil solutions from batch and percolation studies indicate that the retention of sulfate can be described by an equilibrium solid/solution phase of the type Al(OH)SO4 (aluminum hydroxy sulfate). Under similar experimental conditions of solution composition and concentration, Freundlich type adsorption/desorption isotherms and the general solute transport equation can describe the retention and transport of sulfate in this soil.

NOTES

1 Contribution of the Institute of Soil Science and Forest Nutrition, Buesgenweg 2, D-34 Goettingen, F.R. Germany. This research was supported by the Fulbright Commission and the German Research Foundation (DFG).

2 Professor, Department of Forestry, Southern Illinois Univ. at Carbondale, Carbondale, IL 62901.

3 Research Soil Scientist, Division of Forest Research, C.S.I.R.O., P.O. Box 4008, Canberra, ACT 2600, Australia.

4 Research Soil Scientist, Institute of Soil Science and Forest Nutrition, Univ. of Goettingen, 34 Goettingen, West Germany.

Received for publication May 1, 1984. Accepted for publication October 10, 1984.






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