Growth and development of blackgram (Vigna mungo) under co-inoculation of different bacterial cultures with Rhizobium phaseoli

The present study was aimed to improve the growth and development of Blackgram (Vigna mungo) under co-inoculation of different bacterial cultures with Rhizobium phaseoli. Experiment consist of ten treatments in which eight pre-evaluated bacterial cultures in laboratory (Rhizobium phaseoli, Bacillus megaterium, Bacillus subtilis, Bacillus polymyxa, Pseudomonas striata, Pseudomonas flurescens, Azotobacter chroococcum and Azospirilllum lipoferum) and were used with recommended dose of fertilizer (RDF) in randomized block design (RBD). Seed treatment of black gram was done with bacterial cultures along with application RDF at the time of sowing. Results emerged out indicated that the height, number of branches, number of nodules and its fresh and dry weight, weight of shoot and root (both fresh and dry), root density, shoot: root ratio, grain yield, dry matter yield, test weight, protein content and protein yield were significantly improved by co-inoculation over non-inoculation and single inoculation of Rhizobium phaseoli. The co-inoculation of Rhizobium phaseoli + Bacillus megaterium, Rhizobium phaseoli + Pseudomonas striata and Rhizobium phaseoli + Pseudomonas flurescense found to be at par with each other and having more potential than the other combinations.