Int.J.Curr.Microbiol.App.Sci (2018) 7(7): 882-889 882 Original Research Article https://doi.org/10.20546/ijcmas.2018.707.107 Effect of Inorganic Nutrients and Bio-inoculants on Yield, Nutrient Uptake and Quality of Blackgram (Vigna mungo L.) Shubham Srivastav*, R.N. Dixit, Pushpendra Kumar and Akansha Singh C.S. Azad University of Agriculture and Technology, Kanpur-208002, U.P., India *Corresponding author ABSTRACT Introduction The pulses occupy a unique position in world agriculture by virtue of their high protein content and their capacity to fix up atmospheric nitrogen. The present India’s population is 1210 million and is expected to go up to 1279 million in 2020 and 1374 million in 2030. At the present the rate of consumption, demand for pulses would increase annually by 3.3 per cent. It has been estimated that the requirement of pulses is likely to be around 19 million tonnes in 2021followed by 24-26 million tonnes in 2030. This will require about 75 percent increase in the production by the year 2030. Thus, the present productivity of 0.6 tonnes per hectare will have to be raised to 0.99 tonnes per hectare in with 35 percent of the world’s area and 27 percent of the production. India is the largest pulses producing country. These crops occupy nearly 252.59 lakh International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 7 Number 07 (2018) Journal homepage: http://www.ijcmas.com A field experiment was conducted in micro plots of the size 1.44m 2 at experimental area of Department of Soil Science and Agricultural Chemistry in Chandra Shekhar Azad University of Agriculture and Technology, Kanpur during Kharif, 2016 to study the combined effect of biological nitrogen fixing bacteria with phosphate solubilizing bacteria as affected by different levels of nutrients on Blackgram (Vigna mungo L.). Four levels of nutrients i.e. control, 75% SR, 100% SR and 125% SR of NPK were integrated with different bio-fertilizer viz. Rhizobium, PSB, Rhizobium+ PSB and with uninoculated. The experimental results revealed that the grain yield significantly increased by single inoculation with Rhizobium and PSB up to the level of 12.11 qha -1 and 13.40 qha -1 . The dual inoculation (Rhizobium+ PSB) was also signification increased the grain yield up to level of 14.15 qha -1 in comparison to 10.63 qha -1 in uninoculants. The maximum grain yield was obtained 17.33% SR of NPK, The lowest yield was recorded 6.00 qha -1 with respective control. Seed inoculation with Rhizobium, PSB and dual inoculation with (Rhizobium + PSB) was found effective to increase number of nodules, Plant height, branches plant -1 and protein percent content. From the investigation results showed that dual inoculation and (Rhizobium+ PSB) was significantly superior in comparison to single inoculation and uninoculation respectively. Keywords Inorganic nutrients Bio-inoculants yield, Nutrient uptake Quality Accepted: 08 June 2018 Available Online: 10 July 2018 Article Info