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Long term fertiliser experiment - an index of yield and soil sustainability

  • Author:P.SANTHY, D.SELVI AND M.DHAKSHINAMOORTHY

    p-ISSN:0024-9602, e-ISSN:2582-5321, Vol:87, Issue:jan-mar

    DOI: https://doi.org/10.29321/MAJ.10.A00412
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Abstract

                                In the field experiment conducted since 1972, crops numbering to 66 have been grown in a fingermillet maize cowpea (fodder) cropping sequence, it was observed that there was a build up in the organic carbon content of the soil. The build up was maximum for the combined application of farmyard manure and optimum NPK (100%). Maximum sustained yield was obtained for the application of 100% NPK + FYM at 10 t ha-1. A combined application of inorganic fertiliser and organic manures therefore is suggested as a means of sustaining the productivity of crops. Regarding the fertility of the soil, the available N status has maintained, P status has been enhanced and there is a marked depletion in K status.

Key words : Inorganic, Organic, Fertilizers, Manures, Soil fertility

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ISSN : 0024-9602
eISSN : 2582-5321

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