A thin layer of soil surrounding the plant root where majority of soil organism's predominance resides and roots influenced soil health as well as quality called as rhizosphere. This surrounding zone of plant roots in soil extended up to 1 mm wide, but has no distinct edge. Soil organisms reside in the rhizosphere derived energy, carbohydrates and other essential nutrients by utilizing the compounds and materials released from plant roots. The majority of microorganisms present in the

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... e are thought to have no direct consequence on plant growth and vigor. Rhizosphere soil include both beneficial as well as deleterious microorganism. Beneficial microorganisms have been exploited to great success the use of inoculants of nitrogen fixing bacteria, P-solubilizing microorganisms to limit the need for costly fertilizers in legume and cereal crops. Plant growth promoting rhizobacteria (PGPR) are bacteria that living in the rhizosphere which colonize plant roots and promote plant growth, yield and/or reduce disease or insect damage. The plant growth promoting effects of PGPR are mainly derived from morphological and physiological changes of the inoculated plant roots and their functions, and the enhancement of nutrient uptake. This review paper discusses about the effect of composite PGPR on crop growth, nutrient uptake and yield of different agricultural crops.