Effect of organic manures and bio-fertilisers on yield attributes and economics of kharif onion (Allium cepa L.) in semi-arid region

Abstract

A field experiment was conducted at Horticulture farm, S.K.N. College of Agriculture, Jobner (Rajasthan) during kharif, 2012 with eighteen treatment combinations including six levels of organic manures (Control, FYM @ 10 t ha-1, vermicompost @ 5 t ha-1, poultry manure @ 5 t ha-1, FYM @ 5 t ha-1 + vermicompost @ 2.5 t ha-1, FYM @ 5 t ha-1 + poultry manure @ 2.5 t ha-1) and three bio-fertilizer treatments (without inoculation, Azospirillium, Azospirillium + PSB). Results indicated that yield attributes, netreturns and B: C in bulb increased significantly with the combined application of FYM @ 5 t ha -1 + vermicompost @ 2.5 t ha-1. While phosphorus and sulphur content of bulb significantly increased with application of FYM @ 5 t ha-1 + poultry manure @ 2.5 t ha-1. Bulb inoculation with Azospirillium + PSB significantly increased both growth and quality attributes over other treatments.