GROWTH AND YIELD OF KHARIF ONION AS INFLUENCED BY INTEGRATED PLANT NUTRIENT MANAGEMENTNishith Gupta, K.S. Bhargav, Moni Singh, Ankita Pandey and Neerja Patel
One of the major constraints associated with low production of onion (Allium cepa L.) cultivation is improper nutrient management. This necessitates to ascertain an efficient and economical integrated approach with renewable source such as organic manure and biofertilizers. In this context a field trial was carried out by Krishi Vigyan Kendra, Dewas for five consecutive years from 2011-12 to 2015-16 to study the productivity and profitability of kharif onion cv. Agrifound Dark Red as influenced by integrated plant nutrient management. Demonstration on IPNM were conducted by applying FYM (10 t/ha) + NPKS (90:40:50:20 Kg/ha) + Zinc (5 Kg/ha) + Azospirillum and PSB each @ 5 Kg/ha followed by dipping of seedling roots in 1% Azotobacter solution. The results showed that the growth, yield and yield attributing characters performed well under IPNM plots. The plant height, number of leaves per plant, neck thickness, bulb diameter and bulb weight was found highest in demonstration plots as compared to farmers practice. The average bulb yield recorded in IPNM practices was 212.52 q/ha which was more than local check plots (180.88 q/ha). The increment in yield over local check was 18.40 percent. The technology gap, extension gap and technology index was 37.48 q/ha, 31.64 q/ha and 14.99 percent respectively. An average of Rs. 30643 per hectare additional net profit was obtained under demonstration plots over farmers practice. The benefit cost ratio was highest in demonstrations (4.21) as compared to farmers practice (3.70).
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