Madras Agricultural Journal
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Research Article | Open Access | Peer Review

Phosphorus Fixation Capacity of Tamil Nadu Soils

Volume : 65
Issue: Oct-oct
Pages: 645 - 649
Published: October 04, 2023
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Abstract


The P fixation capacity of the four major soil groups of Tamil Nadu was estima- tod. The P fixation capacity of the soils ranged from 20 to 183 mg P/100 g of soil with a mean value of 85 mg P/100 g of soil. The soils studied were found to differ widely in their P fixation capacity, the highest value of P fixation capacity was recorded in the high level latorita soils of Ootacamund and the lowest in the alluvial soil of Melalathur. The P fixation capacity was found to be positively correlated with clay (r=0.632), total R30, (r=0.483). Also, (r=0.533). The relationships of P fixa- tion capacity with clay, total R₂Os. Fejos, free Fes0, and organic carbon were more close in acid soils than neutral and alkaline soils. In alkaline soils, the influence of free CaCO was more, whereas in the neutral soils. Fo,O,. CEC and exchangeable Ca influenced the P fixation capacity of soils.

DOI
Pages
645 - 649
Creative Commons
Copyright
© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

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