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Effects of clay amendment on adsorption and desorption of copper in water repellent soils

journal contribution
posted on 2005-05-01, 00:00 authored by X Z Xiong, Francesco Stagnitti, G Allinson, N Turoczy, P Li, M Leblanc, M Cann, S Doerr, T Steenhuis, J Parlange, G de Rooij, C Ritsema, L Dekker
Copper is an important micronutrient and trace amounts are essential for crop growth. However, high concentrations of copper will produce toxic effects. Australia is increasingly developing production of crops in water repellent soils. Clay amendment, a common amelioration techniques used in Australia, has demonstrated agronomic benefits in increased crop or pasture production. The sorption and desorption of copper and the effect of clay treatment on copper behaviour in a water repellent soil collected from an experimental farm in South Australia is studied. We found that the water repellent soils amended with clay have an increased adsorption capacity of copper. Also the clay-amended soils had an increased ratio of specific sorption to total sorption of copper. The implications of this study to the sustainable agro-environmental management of water repellent soils is discussed.

History

Journal

Australian journal of soil research

Volume

43

Issue

3

Pagination

397 - 402

Publisher

CSIRO Publishing

Location

Melbourne, Vic.

ISSN

0004-9573

eISSN

1446-568X

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2005, CSIRO

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