POTENTIAL USE OF INDIGENOUS RHIZOBIAL BIOFERTILIZERS FOR CULTIVATION OF GROUNDNUT PLANT – A SHORT MINI REVIEW

Soil, an unpredictable environment may not produce intended results of plant growth promotion. Moreover, the effect of PGPR in crop productivity varies under laboratory, greenhouse and field trials. Various abiotic and biotic stress factors influence the effectiveness and survival of PGPR since unfavorable growth conditions in the field are expected in the normal functioning system of agriculture. Unlike local strains, foreign strains may not be adapted to the local soil, climatic conditions or prevailing environmental status in the field. For a promising path forward, a rational strategy of identifying local native rhizobial strains with high SNF properties is the timely need. Specific identification of potent isolates based on “additive hypothesis” with traits of phosphate solubilization, dinitrogen fixation, ACC deaminase, antifungal activity, IAA and siderophore biosynthesis and stress tolerance would be highly valuable. PGPR applications under both natural and controlled soil environments has significantly increased the yield of crops, which makes PGPR to be advantageous as a means of promoting plant growth. As a technology readily accessible by the farmers, further research contributing to investigation on PGPR’S capacity to mitigate various stress factors for the successful use of rhizobacteria with varied applications, such as phytoremediation, bio fertilization is the need of the hour to establish the native potent strains in the already existing community of soil microorganisms.