A New Angle on Trichy Phosphatic Nodules

A. MARIAKULANDAI; S. VENKATACHALAM & M. R. BALAKRISHNAN

doi:https://doi.org/10.29321/MAJ.10.A04278

Madras Agricultural Journal

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A New Angle on Trichy Phosphatic Nodules

Author: A. MARIAKULANDAI, S. VENKATACHALAM & M. R. BALAKRISHNAN,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 42, Issue: oct-oct,

DOI:https://doi.org/10.29321/MAJ.10.A04278

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Abstract

Attempts have been made since 1892, both in this Institute and elsewhere, to convert the rich phosphatic material available as nodules in the Tiruchirapalli district of the Madras State into a readily available phosphatic fertilizer. The high con- tent of lime (calcium carbonate) present in the raw material mitigated against its conversion into superphosphate by the usual sulphuric acid treatment. Consequently, the material, inspite of its high total P₂O5 content (25 to 30%), remained unexploited for use as a fertilizer.

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