Prajapati PJ and Vekariya PD

An experiment was conducted on medium black clayey soil at organic plot, Krishi Vigyan Kendra, Junagadh Agricultural University, Amreli (Gujarat) during rabi season year of 2018-19 and 2019-20 to evaluate some organic manures and cow-based bio-enhancers for organic cultivation of drip irrigated onion (var. GJRO-11). Ten treatments comprising Panchagavya as foliar spray @ 3% at 30, 45 and 60 DAT + FYM @ 5 t ha^-1, Jivamrut as drenching @ 5% at 15, 30 and 45 DAT + FYM @ 5 t ha^-1, Cow urine as foliar spray @ 3% at 15, 30 and 45 DAT + FYM @ 5 t ha^-1, Seaweed extract as foliar spray @ 3.5% at 30, 45 and 60 DAT + FYM @ 5 t ha^-1, Banana sap as foliar spray @ 1% at 30, 45 and 60 DAT + FYM @ 5 t ha^-1, Vermiwash as foliar spray @ 2% at 45 and 60 DAT + FYM @ 5 t ha^-1, Enrich vermi compost @ 2 t ha^-1 + FYM @ 5 t ha^-1, Vermi compost @ 2 t ha^-1 + FYM @ 5 t ha^-1, FYM @ 20 t ha^-1 and Control (Absolute) in randomized block design with three replications. The experiment results basis on two year pooled mean revealed that application of FYM 20 t ha^-1 followed by Panchagavya as foliar spray @ 3% at 30, 45 and 60 DAT + FYM @ 5 t ha^-1, Jivamrut as drenching @ 5% at 15, 30 and 45 DAT + FYM @ 5 t ha^-1, enrich vermi compost @ 2 t ha^-1 + FYM @ 5 t ha^-1, vermi compost @ 2 t ha^-1 + FYM @ 5 t ha^-1 were found superior in respect of the plant height (cm), number of leaves plant^-1, leaf length (cm), neck thickness (mm), no. of scale per bulb, polar diameter (mm), equatorial diameter (mm), bulb weight (g) and bulb yield (t ha^-1).

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