NITROGEN AND PHOSPHORUS LEVELS IN SOILS UNDER MUNICIPAL SEWAGE EFFLUENT IRRIGATION

C. JAYARAMAN and RANI PERUMAL

doi:https://doi.org/10.29321/MAJ.10.A02443

Madras Agricultural Journal

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NITROGEN AND PHOSPHORUS LEVELS IN SOILS UNDER MUNICIPAL SEWAGE EFFLUENT IRRIGATION

Author: C. JAYARAMAN and RANI PERUMAL,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 71, Issue: feb-feb,

DOI:https://doi.org/10.29321/MAJ.10.A02443

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Abstract

Sewage irrigation continuously over a period of 25 years and 15 years significantly favoured the total, ammonical and available N content in the soil. While NH-N accu- mulation was of a higher order in sewage treated soil NO-N concentration was com paratively lower, irrespective of years of treatment In 25 years sowage irrigated soils, a three fold increase in available phosphorus was observed. The concentration of total and available phosphorus decreased with depth.

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