Effect of Co-inoculation of different Bacterial Cultures with Rhizobium phaseoli on Soil Biological Properties

The present experiment was conducted to study the changes occurred in biological property under the influence of co-inoculation of different bacterial cultures with Rhizobium phaseoli in blackgram grown Vertisols at Research farm, Department of Soil Science and Agricultural Chemistry, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani. The pre-evaluated bacterial cultures i.e. Rhizobium phaseoli and seven other (Bacillus megaterium, Bacillus subtilis, Bacillus polymyxa, Pseudomonas striata, Pseudomonas flurescens, Azotobacter chroococcum and Azospirilllum lipoferum) in laboratory were used with RDF in randomized block design. Seed treatment of black gram was done with 50 ml of Rhizobium phaseoli and 50 ml of other bacterial cultures along with application RDF at the time of sowing. Results emerged out indicated that the soil microbial population i.e. fungi, bacteria and actinomycetes and enzymatic activity i.e. dehydrogenase, acid phosphotase and alkaline phosphatase were highly influenced by co-inoculation over mono-inoculation and control one. The treatments received co-inoculation of Rhizobium phaseoli with Bacillus megaterium (T4), Pseudomonas striata (T7) and Pseudomonas flurescense (T8) found strongly at par with each other and having more potential than the other combinations.