TRIVENI, SSRAVANI, K2020-07-272020-07-272018D10,259http://krishikosh.egranth.ac.in/handle/1/5810149901The field experiment was conducted during kharif 2016 - 17 at Water Technology Centre fields, College farm with simple randomized block design which consisted 10 treatemnts and 3 replications. The laboratory work pertaining to this experiment was carried out at Department of Agriculutrual Microbiology & Bioenergy, College of Agriculture, Rajendranagar, PJTSAU, Hyderabad, Telangana. Evaluated the shelf life of CBBF and LBBF brough from different production centers by using specific media for Rhizobium – YEMA with congored and for PSB - pikovskayas agar. The significantly highest viable count with no contaminants were found in K.N. Biosciences produced liquid based biofertilizers i.e Rhizobium and PSB and they formed the maximum no. of cells in initial count was 8.38, 8.15 log no. of cells respectively. The plant growth parameters like plant hight and total plant dry matter production was significantly influenced by the seed inoculated with LBBF (Rhizobium and PSB) at 30, 45, 60 DAS and at harvest stage.The plant height was registered 27.40, 39.00, 46.33 and 47.07 cm respectively and plant dry matter production was noticed 8.60, 15.80, 22.30 and 18.30 g plant-1 at 30, 45, 60 DAS and at harvest respectively over control at all crop growth stages. The Seed inoculated with CBBF noticed significantly highest root length 12.63, 17.60, 22.83 and 23.50 cm at 30, 45, 60 DAS and at harvest stage of crop when, compared to other treatment combinations. The no. of root nodules and nodule dry weight was significantly influenced by the soil application of LBBF at 30 and 45 DAS. The significantly lowest no. of noules and their dry weight was recorded with treatment T10 (Control) i.e. only biofertlizers application. The total soil microbial population at flowering, harvesting stage and soil microbial biomass carbon, soil enzyme activities viz., soil dehydrogenase, acid and alkaline phosphatase and urease activity were significantly influenced by the drip fertigation with 100 % RDF and along with LBBF as biofertigation were registered maximum microbial population and their activity at crop harvest stage. Whereas, lowest was observed with control treatment. The maximum nutrient uptake (N P K) and their availability in soil was significantly recorded highest in treatment with T6 (100 % RDF and LBBF drip fertigation).The highest N P K uptakes values were 62.23, 24.10 and 51.33 kg ha-1 respectively at crop harvest stage. The highest yield & yield attributing characteristics of greengram like number of pods plant-1, number of seeds pod-1, test weight and seed yield (1019.50) kg ha-1, haulm yield (2543.50) kg ha-1 were noticed significantly highest by the application of liquid based biofertilizers along with 100 % RDF as fertigation at harvest satge. It was recorded significantly increased highest seed and haulm yield were (23.93 %) and (28.16 %) over control. The results showed that LBBF has significantly influenced the yield of greengram due to having more shelf life and when it is applied as biofertigation the microbial inoculants significantly influence the crop growth and yield of greengram during the crop period.ennullThesis