Rapid human population GROWTH and its consequences of food shortage become a significant concern in recent decades across the world. The untold reasons behind this food shortage were industrialization, urbanization, modern civilization, etc., where the agricultural land has been deployed. With the decreasing farmland and its cultivation, food productivity declined drastically and failed to serve the world’, s vast human population. The present challenge is to increase productivity with the least agricultural land. Thus, excessive chemical fertilizer has been used to quickly turn out more outstanding food production, leading to more significant damages to soil ecosystem and human health. Henceforth, bio-fertilizers find the best alternatives to chemical fertilizers. This study focuses on complete nature of PLANT GROWTH PROMOTING RHIZOBACTERIA, which is used in bio fertilizers for sustainable agricultural productivity and everlasting soil fertility. The characteristics of PLANT GROWTH PROMOTING RHIZOBACTERIA and its role in PLANT GROWTH and formulation of PLANT GROWTH PROMOTING RHIZOBACTERIA biofertilizers have been revealed through intensive literature. The consortium information collected from various literatures brings the unique findings that PLANT GROWTH PROMOTING RHIZOBACTERIA is the natural boon to the global agriculturist. This study discusses PLANT GROWTH PROMOTING RHIZOBACTERIA bacterial strains’,role in protecting the soil from various biotic and abiotic stresses, regulating PLANT GROWTH and its role in producing biofertilizers. Besides, it is transformed into commercial products. Eventually, the future trends and research in PLANT GROWTH PROMOTING RHIZOBACTERIA bio inoculants that promote sustainable agriculture have been elucidated. The microorganism is the bio fertilizer’, s main ingredients, PROMOTING the soil nutrients for efficient PLANT GROWTH and increasing food productivity. Although many microorganisms efficiently contribute to the soil nutrients, this review narrows down to the PLANT GROWTH PROMOTING RHIZOBACTERIA study. Beneficial bacterium plays a vital role in nutrient mineralization and productivity among the various microorganisms. Bio fertilizers containing beneficial bacteria were economically viable and readily available in nature. This review reveals the complete essence of PLANT GROWTH PROMOTING RHIZOBACTERIA and its part in bio fertilizers.

Afield experiment was conducted at Rice Research Station of Tonekabon, Iran, to determine the effect of seed inoculation with PLANT GROWTH-PROMOTING RHIZOBACTERIA on rice grain yield and yield components under different nitrogen (N) rates. The experimental design was a Randomized Complete Block with factorial arrangement and three replicates. Factors included seed inoculation with PLANT GROWTH-PROMOTING RHIZOBACTERIA [control (un-inoculated), seed inoculation with Azospirillum lipoferum, seed inoculation with Azotobacter chroococcum, and seed inoculation with a combination of A. lipoferum and A. chroococcum] and N rates (100%, 75%, and 50% of recommended nitrogen rates, i. e. 100, 75 and 50 kg N ha-1, respectively). Results showed that the highest grain yield (7875 kg ha-1) was recorded for PLANTs inoculated with a combination of A. lipoferum and A. chroococcum, while the lowest one was recorded for un-inoculated control PLANTs. Moreover, rice grain yield, panicle number per m2, grain number per panicle, and 1000-grain weight increased by 9%, 9%, 18%, and 6%, respectively, as N fertilizer rate increased from 50 to 100 kg ha-1. The highest grain yield (7875 kg ha-1) was obtained when N was applied at the rate of 75 kg ha-1 to seeds inoculated with a combination of A. lipoferum and A. chroococcum.