To study the effect of integrated nutrient management on growth and yield of potato

Field experiment was carried out at the Vegetable Research Farm, Acharya Narendra Deva University of Agriculture & Technology, Kumarganj, Ayodhya (U.P.) during Rabi season of 2018-19 to study the effect of integrated nutrient management on growth and yield of potato. The experiment was consist of eight treatment viz. control (100% recommended dose off ertilizer), FYM @ 30 t/ha + bio – fertilizer (PSB), Poultry manure @ 5 t/ha + bio – fertilizer (PSB), Vermi – compost @ 7.5 t/ha + bio – fertilizer (PSB), FYM @ 10 t/ha + poultry manure 1.7 t/ha + vermi – compost 2.7 t/ha + bio – fertilizer (PSB), Recommended dose of nitrogen (150 kg/ha) 67% RDN through inorganic and 33% RDN through FYM + bio – fertilizer (PSB), Recommended dose of nitrogen (150 kg/ha) in which 33% RDN through inorganic and 67% RDN through FYM + bio – fertilizer (PSB), Farmer practices (through organic). The experiment was laid out in Randomized complete block design with three replication. The T6 RDN (150 kg/ha) 67% RDN through inorganic and 33% RDN through FYM + bio–fertilizer (PSB) were significantly superior over the other treatments for all growth, yield and nutrient uptake of parameters and economics of production. T6 RDN (150 kg/ha) 67% RDN through inorganic and 33% RDN through FYM + bio – fertilizer (PSB) has resulted in higher plant height (49.14 cm), number of haulm and number of leaves (38.59 and 433.68, respectively), higher uptake of major nutrients viz., nitrogen, phosphorus and potassium (184.64, 34.85 and 185.51 kg ha-1, respectively) in potato tuber. Yield studies characters viz., number of tuber (grade wise) hill-1, Weight of tuber (gm hill-1), and tuber yield (kg plot-1) in 0-25g, 25-50g, 50-75g, and >75g (3.26, 2.24, 2.05, 2.04 and 23.17, 115.66, 138.93 and 184.88 and 2.50, 14.98, 18.99, 13.48) and yield of tuber (386.60 q ha-1) was found T6 RDN (150 kg/ha) 67% RDN through inorganic and 33% RDN through FYM + bio – fertilizer (PSB).