Possible Control of Aluminum Solubility by 1 M KC1 Treatment in Some Soils Dominated by Aluminum-Humus Complexes

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概要

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• Extraction of aluminum with 1 M KCl has been adopted as a standard method for determining salt exchangeable forms of Al from acid soils. We examined the possibility of Al precipitation during KCl extraction in soil samples dominated by Al-humus complexes by comparing Al release rates between non-treated and KCl-treated samples in an acetate buffer adjusted to pH 3.5. Five of 14 samples used in this study showed that the aluminum release rates and the total amount of Al released from KCl-treated residues were greater than or nearly identical with those of non-treated soil samples. This behavior suggests the formation of an acid-labile, surface or interlayer precipitate during the KCl extraction process. Thus, the amount of 1 M KCl-extraetable Al does not always reflect the amount of exchangeable Al in soils dominated by Al-humus complexes.

• 社団法人日本土壌肥料学会の論文

著者

• Dahlgren R

  Univ. California Ca Usa

• Dahlgren Randy

  Department Of Land Air And Water Resources Univ. California Davis

• Takahashi Tadashi

  Akita Prefectural College of Agriculture

• Dahlgren Randy

  Department Of Land A Ir And Water Resources University Of Callfornia

関連論文

• 3-7 アロフェン質茶園黒ボク土壌における1MKCl抽出Al(3.土壌分析法)
• Possible Control of Aluminum Solubility by 1 M KC1 Treatment in Some Soils Dominated by Aluminum-Humus Complexes
• Aluminum Solubility and Release Rates from Soil Horizons Dominated by Aluminum-Humus Complexes
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• MICROMORPHOLOGY OF A CLAYEY Bs HORIZON IN AN ASH-DERIVED PODZOLIC SOIL FROM SHIMOKITA PENINSULA IN NORTHEASTERN JAPAN

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