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Extraction of aluminium from acid, strongly weathered fijian soils using M KCI: A comparison of methods of extraction and determination
Author(s) -
Naidu Ravendra,
Syers J Keith,
Tillman Russell W,
Lee Robert,
Kirkman John H
Publication year - 1988
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740450402
Subject(s) - soil water , extraction (chemistry) , aluminium , chemistry , environmental chemistry , mineralogy , soil science , geology , chromatography , organic chemistry
Abstract A comparison was made of methods for the extraction and determination of exchangeable aluminium (Al 3+ ) in acid, strongly weathered soils. The results showed large differences in the amounts of Al 3+ in each soil, depending on the method of extraction and determination. This observation has important implications for the liming of acid soils because in recent years there has been an increasing tendency to base application rates on the amounts of exchangeable Al 3+ in soils. It appears that the most suitable method of extracting Al 3+ from acid, strongly weathered Fijian soils involves shaking the soils with M KCl for 2 × l‐h periods, followed by the determination of Al 3+ using the oxine colorimetric procedure.