Plant growth promoting and biocontrol activity of Rhizobium meliloti against plant pathogens

The present study was carried out with plant pathogenic microorganisms were isolated from the infected roots of Vigna mungo plant, collected from Thanajavur district, Tamil Nadu, India. The identified fungal colonies were confirmed as Aspergillus flavus and Fusarium solani. In this study plant growth promoting rhizobacterial strains were successfully isolated from the Vigna mungo rhizosphere soil. The isolated organisms were confirmed as Rhizobium meliloti. The isolated organisms were used for indole acetic acid production the isolated organism were produced high level. The seed germination test were analysed in agar plates. The Vigna mungo seeds were treated with isolated Rhizobial species and placed on agar surface the seed germination was counted 90% percentage seeds were germinated in this results. Analysis the Morphometric and Biochemical parameters, After 10 days of growth, germination percentage, root length, shoot length, fresh weight and dry weight were measured and calculated. Biochemical compound such as chlorophyll, total protein and total carbhohydrate were analysed. The biochemical contents such as chlorophyll, protein and carbohydrates content were notied in decreased amountthe in treatment T6 (Aspergillus flavus and Fusarium solani) containing pot, when compared with control treatment (without microorganisms).