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Evaluation of Different Methods of Measuring Available Potassium in Laterite Soils of Nilgiris District

  • Author:N. S. BOLAN and U. S. SREE RAMULUS

    p-ISSN:0024-9602, e-ISSN:2582-5321, Vol:67, Issue:may-may

    DOI: https://doi.org/10.29321/MAJ.10.A02837
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Abstract

                                Seven extractants, viz., neutral normal ammonium acetate, Morgan's universal solution, 0.01 M Cacla, 6N H₂SO 1N HNO. 0.5N HCI and distilled water were tested to assess the available K status in 27 samples of high level latente soils of Nilgiris District. Uptake of K in all these soils was determined by Neubauer seedling technique using rice as test crop. Correlations were worked out between the quantities extracted by these seven extrac tants and uptake of K by rice seedlings. Morgan's reagent was found to be the best extrac-- tant in assessing the available K status in laterite soils.

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ISSN : 0024-9602
eISSN : 2582-5321

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