Effect of Varying NPK Levels and Bio-fertilizers on Growth and Yield of Okra [Abelmoschus esculentus (L.) Moench] under Sustainable Condition

An experiment was conducted at Horticultural Research Station, Mondouri, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia in West Bengal during rabi season of 2007–08 with objectives to find out the suitable combination of biofertilizers [Azotobacter, Azospirillium and Phospho Solubilizing Bacteria (PSB)] in presence or absence of FYM (15 t/ha) and two levels of graded NPK fertilizers (80-60-50 and 40-30-25 N, P2O5, K2O kg/ha) on the growth and fruit yield of okra cv. Arka Anamika [Abelmoschus esculentus (L.) Moench] and the availability status of N, P and K in soil considering the growth, yield and quality parameters data revealed that significantly minimum height of plant was recorded by the application of PSB + FYM. In respect of plant height at 30 days, plant height at 60 days, number of branches, number of leaves, number of fruits, fruit length, fruit diameter, fruit yield per plot and fruit yield per ha were significantly maximum in the plant receiving 50% recommended dose of fertilizer (RDF) + Azotobactor + Azospirillum + PSB + FYM with good yield (196.97 q/ha) and export fruit quality of Okra.