Isolation and Characterization of Rhizobacteria from Soil and Its Efficiency as Plant Growth- Promoting Microbes

Abstract

Rhizosphere is the soil environment where the plant root is available and is a zone of maximum microbial activity resulting in a confined nutrient pool in which essential macro-and micronutrients are extracted. The microbial population present in the rhizosphere is relatively different from that of its surroundings due to the presence of root exudates that function as a source of nutrients for microbial growth. Among all these interactions, those resulting in symbiotic and non-symbiotic nitrogen fixation are considerably important. In recent years, the use of bacteria (rhizobacteria) to promote plant growth has increased in several regions of the world and has acquired relevant importance in developing countries that are the producers of raw materials for food.In the present study Rhizobacteria was isolated from the soil and the production of IAA and phosphate solubilisatrion was studied. The effect of PGPR was done on Mat seeds (matki) and black-eyed peaseeds (chawali) on the growth of plants.