The Contribution of Various Components to pH Buffering Capacity of Acrisols in Southeastern Vietnam

This paper examined the contribution of various soil components to pH buffering capacity (pH BC ) of haplic Acrisols in an upland area of Southeastern Vietnam. Sampling was conducted in 2016 in Tan Bien district, Tay Ninh province at seven sites from the surface to 60-cm depth. Soils were very acidi...

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Bibliographic Details
Published inCommunications in Soil Science and Plant Analysis Vol. 50; no. 9; pp. 1170 - 1177
Main Authors Nguyen, Tho, Tran, Thi Thuy Hieu
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 15.05.2019
Taylor & Francis Ltd
Subjects
Acidic soils
Acidification
Acidity
Acrisols
aluminium
Aluminum
Buffers
Clay
Clay minerals
Clay soils
Components
Kaolinite
Liming
Minerals
Organic carbon
Organic soils
pH effects
Soil
Soil acidification
Soil conditions
Soil remediation
Vietnam
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Summary:This paper examined the contribution of various soil components to pH buffering capacity (pH BC ) of haplic Acrisols in an upland area of Southeastern Vietnam. Sampling was conducted in 2016 in Tan Bien district, Tay Ninh province at seven sites from the surface to 60-cm depth. Soils were very acidic (pH H2O 4.53 ± 0.05). The pH BC were very low, 0.46 ± 0.04 and 0.44 ± 0.05 cmol H + kg −1 pH −1 , respectively, for original samples and those from which soil organic carbon (SOC, 0.52 ± 0.09%) were removed. The contribution of Al 3+ to pH BC was remarkable while that of SOC was of little significance. The contribution of clay minerals to pH BC was unclear due to the low (9.37 ± 0.76%) and kaolinite-dominated clay content. The current soil conditions indicated a potential for further soil acidification. Liming would be one of the measures to remediate soil acidity in the research area.
ISSN:0010-3624
1532-2416
1532-4133
DOI:10.1080/00103624.2019.1604735