Efficacy of Integrated Nutrient Management on the Production and Quality of Onion
2015
Singh, Abhishek | Ram, R. B.
A field experiment was carried out during the winter season 2013–14 to study the effect of sixteen combinations of bio-fertilizers, organic manures and chemical fertilizers on onion var. NHRDF-Red 2. A gradual shift from using purely organic sources to introducing some proportion of inorganic fertilization is gaining acceptance. It was revealed from the data that application of 50% recommended dose of NPK along with 50% recommended dose of the vermicompost results in maximum vegetative growth (Plant height, Number of leaves, Neck thickness) and bulb growth (Bulb weight, Bulb length, Bulb diameter and bulb size) which is at par with (50% recommended NPK + 50% FYM), recommended dose of NPK. Similarly, maximum yield per hectare were found in (50% recommended NPK + 50% vermicompost) while minimum yield was observed in control. Maximum quality bulbs (TSS, vitamin C, Reducing Sugars, Non reducing Sugars and Total Sugars) were also found in 100% vermicompost followed by 100% FYM. It is therefore, concluded that (50% recommended NPK + 50% vermicompost) combination is the best for onion as compared to others so far as the sustainability in production and environmental consideration are concerned.
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