ZINC ADSORPTION IN VERTISOLS AND INCEPTISOLS OF TAMIL NADU

R.KRISHNASAMY

doi:https://doi.org/10.29321/MAJ.10.A01858

Madras Agricultural Journal

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ZINC ADSORPTION IN VERTISOLS AND INCEPTISOLS OF TAMIL NADU

Author: R.KRISHNASAMY,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 78, Issue: may-aug,

DOI:https://doi.org/10.29321/MAJ.10.A01858

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Abstract

Zinc adsorption in sixteen surface soil samples of Vertisol and Inceptisol was studied over a wide range of zinc solution concentrations (2.5 to 200 ppm). The zinc adsorption data conformed to Freundlich equation for the entire range of concentration tested. The Freundlich constants 'k' and 'n' were derived for zinc in these soils. The 'k' values ranged from 0.28 to 1.78 mg Zn/g with a mean value of 0.83 mg Zn/g soil. The 'k' values were significantly related to clay, CEC, silt, ex. calcium and free CaCO3. Multiple regression analysis revealed that zine adsorption can be predicted with good precisions from the above soil properties.

Keywords: Zinc adsorption-vertisols-inceptisols.

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