SUBHASH REDDY, R.NAVEEN KUMAR, REDDI2016-06-082016-06-082013http://krishikosh.egranth.ac.in/handle/1/67027The experiment was conducted during 2012-13 at college farm, Department of Agricultural Microbiology and Bioenergy, and Department of Soil Science & Agricultural Chemistry, College of Agriculture, Rajendranagar, ANGRAU, Hyderabad. The field experiment was conducted following randomized block design with 9 treatments and three replications. Treatments consisted of T1 - 100% RDF, T2 - Uninoculated control, T3 - Only seed coating with inoculant, T4 - Only soil application with inoculant, T5 - Seed coating + soil application of inoculant with FYM, T6 - Seed coating + soil application of inoculant with FYM at 25 DAS, T7 - Soil application + soil application of inoculant with FYM at 25 DAS, T8 - Seed coating + soil application with FYM + soil application of inoculant with FYM at 25 DAS, T9 - Only soil application at 25 DAS. The growth parameters viz., plant height, root length, nodule no. plant-1, nodule dry wt. (g plant- 1), dry matter accumulation (g plant-1), were recorded at different crop growth stages. Likewise observation on yield attributes viz., number of seeds pod-1, weight of 100 Seeds, seed yield were taken at harvest. The protein % in seed and nutrient uptake were estimated at harvest stage. Also available soil nitrogen, phosphorus and potassium and microbial population were recorded at initial, flowering and harvest stage. At 25 DAS and 50 DAS, treatment T9 (only soil application at 25 DAS) recorded significantly higher plant height, whereas treatment T8 (seed coating + soil application with FYM + soil application of inoculant with FYM at 25 DAS) recorded significantly maximum root length as compared to all other treatments. At flowering stage treatment T8 (seed coating + soil application with FYM + soil application of inoculant with FYM at 25 DAS) recorded significantly higher number of root nodule and nodule dry weight and also total dry matter production and seed protein content at harvest stage compared to all other treatments. Multiple application of microbial inoculants i.e seed treatment + soil application of inoculants with FYM + at 25 DAS soil application of inoculants with FYM recorded maximum yield, number of seed per pod-1 and 100 seed weight than all other treatments. Highest nitrogen, phosphorus and potassium content and uptake, and higher available nitrogen, phosphorus, potassium in the soil were observed in the treatment receiving seed treatment + soil application of inoculants with FYM + at 25 DAS soil application of inoculants with FYM which was significantly higher than the inoculants applied through only seed treatment or only soil application or seed treatment + soil application only once. At harvest, treatment T8 (seed coating + soil application with FYM + soil application of inoculant with FYM at 25 DAS) recorded significantly higher bacterial, fungal, actinomycetes, Rhizobium and Pseudomonas population as compared to the other treatments. The significantly lowest bacterial, fungal, actinomycetes, Rhizobium and Pseudomonas population was found in the treatment T2 (un-inoculated control).enapplication methods, sowing, farmyard manure, yields, seed treatment, planting, bacteria, rhizobium, root nodulation, cropsMICROBIAL INOCULANTS, YIELD, BLACKGRAMThesis