The Efficiency of Plant Growth Promoting Rhizobacteria for The Enhancement of Rice Production

Numerous bacteria encourage the growth of plants, and numerous microbial products that encourage plant growth have been commercialised. In this review, we focus only on bacteria that originate from the root and have this impact on it. These microorganisms are frequently referred to as PGPRs (plant-growth-promoting rhizobacteria). These rhizobacteria's beneficial impacts on Direct or indirect plant growth are possible. The use of plant growth-promoting rhizobacteria (PGPR) for agricultural purposes is becoming more and more popular on a global scale, and it appears that this will be the future trend. PGPR are bioresources that have the potential to revolutionise agriculture by offering significant advantages. These advantageous, free-living microorganisms promote emergence, colonise roots, encourage growth, and increase yield. Many plant diseases are reported to be resistant to PGPR in a variety of crops, including cereals, pulses, ornamentals, vegetables, plantation crops, spices, and some trees. The majority of studies have focused on the investigation and possible advantages of PGPR in horticulture, forestry, and agriculture. Although well-documented, the possible mechanisms used by these rhizobacteria in growth promotion and resistance have not yet been extensively investigated. When many mechanisms are combined through the application of PGPR, their positive properties are increased. Due to inconsistent performance and little commercialization outside of a few industrialised nations, their use hasn't been maximised. The benefits and drawbacks of using PGPR as bioinoculants, biofertilizers, and biocontrol agents, as well as their practical potential for bettering agriculture, are also covered. The goal of the study was to describe plant growth-promoting rhizobacteria (PGPR) for growth enhancement and stress tolerance features as well as their effectiveness on early establishment of rice seedlings. Out of 30 PGPR isolates, 18 fixed nitrogen, 17 solubilized tricalcium phosphate, and 29 and 17 generated IAA with ...