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Article
Effect of Gypsum Application Rate and Leaching Regime on Wheat Growth in a Highly Acidic Subsoil
International Symposium on Plant Soil Interactions at Low pH
  • C. D.A. McLay, University of Western Australia
  • G. S. P. Ritchie, University of Western Australia
Publication Date
1-1-1995
Abstract

A glasshouse experiment "was conducted to investigate gypsum application and leaching on the amelioration of" an aluminium (Al) toxic subsoil for wheat growth. Treatments included different rates of gypsum application and amount of leaching prior to wheat being grown. Wheat shoot growth increased when gypsum was applied in both the presence and absence of leaching, but growth was higher with leaching. Gypsum application led to a decrease in toxic Al as a result of a higher ionic strength and activity of AlSO4+ion pairs in the soil solution, and increased Al leached from the soil. Root growth may not be a good bioassay for predicting wheat shoot responses to gypsum applications on acidic subsoils.

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Publisher statement
The original publication is available at http://www.springer.com/environment/soil+science/book/978-0-7923-3198-8.
Citation Information
C. D.A. McLay and G. S. P. Ritchie. "Effect of Gypsum Application Rate and Leaching Regime on Wheat Growth in a Highly Acidic Subsoil" International Symposium on Plant Soil Interactions at Low pH (1995) p. 527 - 530
Available at: http://works.bepress.com/gsritchi/38/