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Phosphate Adsorption Characteristics of Tamil Nadu Soils

  • Author:M. SUNDARARAJAN and G.V. KOTHANDARAMAN

    p-ISSN:0024-9602, e-ISSN:2582-5321, Vol:65, Issue:aug-aug

    DOI: https://doi.org/10.29321/MAJ.10.A03109
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Abstract

                                Phosphate adsorption isotherms were studied for twenty soils representing four major soil groups viz.. red, black. alluvial and laterite. The P adsorption capacities of the soils varied widely and the P adsorption was high in high level laterite soils. The P adsorption isotherms were found to fit Langmuir's equation at equilibrium concentra- tion of less than 5 ppm. P adsorption maximum of these soils ranged from 118 to 1750 g/g of soil. P adsorption maximum positively correlated with total R,O,, AlsOs. Fe,O, Free FesOs silt, organic carbon and clay. P adsorption maximum was found to have a negative relationship with soil pH.

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Madras Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.

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Madras Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.

ISSN : 0024-9602
eISSN : 2582-5321

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