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Extractable Aluminum in Some Hawaiian Soils
Author(s) -
Plucknett D. L.,
Sherman G. D.
Publication year - 1963
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1963.03615995002700010016x
Subject(s) - lime , soil water , environmental chemistry , phosphate , chemistry , environmental science , soil science , geology , paleontology , organic chemistry
Extractable Al was measured in 5 Hawaiian soils from Kauai at four 3‐month intervals. A relationship between extractable Al and rainfall was observed. Highest extractable Al was measured during high rainfall periods (winter) and lowest extractable Al was measured during low rainfall periods (summer). High extractable Al was also observed in the poorly drained Koolau soil. Low extractable Al during summer months could be the result of inactivation of Al on cation‐exchange sites due to dehydration. The method used for extractable Al in this study probably measured both “exchangeable” and “soluble” Al. Plant Al analysis indicated not all extractable Al measured was available to the plant. In subsoils treated with lime, extractable Al decreased with increased pH. Lower extractable Al due to P treatment was interpreted as inactivation of Al as the latter reacted with the phosphate.