Nature of Acidity in Alfisols,Entisols and Inceptisols in Relation to Soil Properties |
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| Authors: | Javid Ahmad Bhat Biswapati Mandal Gora Chand Hazra |
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| Institution: | 1. Krishi Vigyan Kendra Ganderbal, Sher-e-Kashmir University of Agricultural Sciences &2. Technology of Kashmir, Shuhama Alusteng, Ganderbal, Jammu and Kashmir, India;3. Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India |
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| Abstract: | Twenty acid soils of West Bengal, India, representing Alfisols, Entisols and Inceptisols orders, were studied to characterize their acidity in relation to physicochemical properties. Total potential acidity (TPA), pH-dependent acidity (PDA), total acidity (TA), hydrolytic acidity (HA) and exchange acidity (EA) ranged from 2.02–6.90, 1.75–6.05, 1.18–2.75, 0.98–1.90 and 0.06–0.85 cmol(p+) kg?1, respectively. Relative order for all forms of acidity was: Entisols>Alfisols>Inceptisols. Average contribution of EA to TPA and TA was 9.7% and 19.7%, respectively, and that of PDA to TPA was 90.1%. Contribution of electrostatically bound H+ to EA was highest for Inceptisols followed by Entisols>Alfisols, and reverse was true for electrostatically bound aluminum (Al3+). All forms of acidity showed significant positive correlations with organic carbon (C) forms of Al but negative correlations with pH of soil. They also showed significant correlations with each other. Soil pH, organic C and exchangeable Al caused most of the variations in different forms of soil acidity. |
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| Keywords: | Alfisols entisols and inceptisols forms of acidity soil properties |
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