Author(s):

MK Jat, Abha Tikkoo, PK Yadav, SS Yadav and PVS Yadav

Abstract: A field experiment was conducted during Kharif 2014 to Rabi 2015 at the Regional Research Station, CCS HAU, Bawal, Haryana to study the effect of integrated nutrient management on yield, soil fertility and economics in Abelmoschus esculentus – Allium cepa cropping system in semi arid zone of Haryana. Results revealed that highest yield and B: C ratio of okra (37.65 qha^-1and 1.19) and onion (173.95 qha^-1 and 6.19) were recorded with application of 75% RDF + 6t vermi-compost ha^-1+ bio-fertilizer. Application of 75% RDF alone significantly reduced the fruit yield of okra by 12.3 and bulb yield of onion by 4.1% over 100% RDF. Application of 75% RDF +15 t FYM ha^-1 increased the fruit yields okra by 25.6% and onion bulb yield by 8.0%, whereas the application of 75% RDF + 6t vermi-compost ha^-1 significantly increased the okra fruit yield by 29.6% and onion bulb yield by 11.9% over 75% RDF. Bio-fertilizers application increased the yield of both crops significantly over control and but increase in yield were non-significant over 75% RDF in both the crops. The integrated use of inorganic and organic fertilizer increased the crops yield by 25.9 and 8.4% with 75% RDF+15t FYM ha^-1+ bio-fertilizer and by 27.8 and 11.9% with 75% RDF + 6t vermi-compost ha^-1+ bio-fertilizer over 75% RDF + bio-fertilizer. The treatment comprising of 75% RDF+ 6t vermi-compost ha^-1 +bio-fertilizers also maintained the highest available NPK (124.85, 15.85 & 176.05 kg ha^-1) after the harvest of okra-onion cropping system. The maximum B:C ratio of 1.19 & 6.19 was recorded under the treatment receiving 75% RDF+6t vermi-compost ha^-1 + bio-fertilizers in okra and onion crops, respectively.

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