Influence of bio-fertilizers on growth, yield and quality of onion ( Allium cepa L.) cv. Sukhsagar.

摘要

A field experiment was conducted during the rabi season for consecutive two years of 2011-2012 and 2012-13. to study the interaction effect of chemical and bio-fertilizers on growth, yield and quality of onion. Maximum plant height (67.66 cm), bulb diameter (4.82 cm), bulb weight (56.92 g), total yield (30.20 t/ha) and marketable yield (28.43 t/ha) was recorded with the application of 100% RDF+PSB @ 2 kg/ha+ Azospirillum @ 2 kg/ha. Though, the interaction effect of chemical and biofertilizers were not significant on the results of leaves number and neck thickness. However maximum average leaves number (6.89) and neck thickness (1.42 cm), was reported by the application of 100% RDF+PSB+ Azospirillum. Maximum dry matter (14.87%), total soluble solid (13.83 掳B) and Pyruvic acid (4.16 mol/g) content of bulb was observed from the 75% RDF+PSB+ Azospirillum, treatment. It is therefore concluded that application of biofertilizers ( Azospirillum and PSB mixture) along with 100% recommended dose of fertilizers were recommended to obtain the highest bulb yield with better quality of onion bulbs.