LONG TERM EFFECT OF GRADED DOSES OF FERTILIZERS AND MANURES ON SOIL PHYSICAL CONDITIONS

S MAHIMAIRAJA; J. HELKIASH and A. GOPALSWAMY

doi:https://doi.org/10.29321/MAJ.10.A02280

Madras Agricultural Journal

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LONG TERM EFFECT OF GRADED DOSES OF FERTILIZERS AND MANURES ON SOIL PHYSICAL CONDITIONS

Author: S MAHIMAIRAJA, J. HELKIASH and A. GOPALSWAMY,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 73, Issue: jun-jun,

DOI:https://doi.org/10.29321/MAJ.10.A02280

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Abstract

Long form application of graded doses of NPK fertilizers did not have signi ficant influence on bulk density and porespace, but significantly influenced the hydraulic conductivity and to some extent the soil nagrogate parameters. The combined application of inorganic fertilizers with organic manures viz., FYM impro- ved the physical condition of soil by increasing the hydraulic conductivity, poro- sity and aggregation and reducing the bulkdensity of soils. The improvement in Physical condition of soil due to the combined application of inorganic fortilizers and organic manures was reflected in the highest yield of grain and straw.

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