EFFECT OF P AND K ON CROP YIELD AND SOIL FERTILITY UNDER RICE-RICE CROPPING SEQUENCE

P.MUTHUVEL; C.UDAYASOORIAN and A.CHAMY

doi:https://doi.org/10.29321/MAJ.10.A01856

Madras Agricultural Journal

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EFFECT OF P AND K ON CROP YIELD AND SOIL FERTILITY UNDER RICE-RICE CROPPING SEQUENCE

Author: P.MUTHUVEL, C.UDAYASOORIAN and A.CHAMY,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 78, Issue: may-aug,

DOI:https://doi.org/10.29321/MAJ.10.A01856

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Abstract

Field experiments conducted at the Agricultural Research Station, Bhavanisagar, during 1981-1987 to determine the P and Krequirement of rice in "rice-rice" system revealed that addition of P2O5 and K20 up to 50 kg/ha continuously for nine seasons failed to influence the grain yield. Continuous addition of P20s resulted in considerable build up of available P2Os content of soils. Soil K status was not altered by the Continuous application of varying rates of potassium.

Keywords: Soil fertility, rice-rice sequence.

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