This book endeavors to bring together the knowledge and expertise of scientists and academics working in the field of Agriculturally Important Microorganisms (AIMs). It provides comprehensive information on various AIMs, their mechanisms of action, and modes of application for the purpose of promoting sustainable agriculture. The book's main focus is on the potential of microbes in nitrogen fixation, phosphorous and potassium solubilization, and tolerance to various environmental conditions. Additionally, it discusses the use of Plant Growth Promoting Rhizobacteria (PGPR) in enhancing crop productivity. These microbes reside in the rhizosphere of plant roots and promote plant growth through direct and indirect mechanisms such as solubilizing phosphate, potassium, and zinc, producing siderophore, IAA, Hydrocyanide, and fixing ammonia, among other processes.

The book also highlights the potential of PGPR as a means of reducing the reliance on chemical fertilizers and other agrochemicals. Furthermore, it provides an insight into the use and application of nano-biofertilizers for sustainable agriculture. In summary, this book offers a comprehensive overview of the potential of AIMs and PGPR in promoting sustainable agriculture and reducing the use of chemical fertilizers.

1. Biofertilizers: A Representative Illustration of Plant-Microbe Interaction 2. Plant Growth Promoting Microbes of Rice and their Application for Sustainable Agriculture  3. Role of Biofertilizer in Sustainable Agriculture: Enhancing Soil Fertility, Plant Tolerance and Crop Productivity 4. Role of Plant Growth Promoting Rhizobacteria in Mitigating Salt Stress: A Review 5. Multiple potential traits of PGP Pseudomonas sp 6. Use of Biofertilizers for Sustainable Agriculture 7. Biological Nitrogen Fixation: Mechanism and Applications 8. Potassium Solubilizing Microorganisms (Ksm) - Very Promising Biofertilizers 9. Advances in Potassium Nutrition in Crop Plants by Potassium Solubilizing Bacteria 10. Nano Biofertilizer for Sustainable Agriculture 11. Role of Phosphorus Solubilizing Microorganisms for Sustainable Crop Production 12. Plant Growth Promoting Traits Exhibited by Rhizobium Isolated from Different Regions of Odisha