Part. 7: Microbiology for Sustainable Agriculture and Improved Production; 1. Plant Growth-Promoting Rhizobacteria: An Eco-Friendly Approach for Sustainable Agriculture and Improved Crop Production; 2. Beneficial Uses and Applications of Plant Growth-Promoting Rhizobacteria in Sustainable Agriculture; -- PART 2: Microbiology for Crop Disease Management and Pathogenic Control in Sustainable Environments 3. Microbial Control: A Potential Solution for Plant Disease Management in Sustainable Environments and Agriculture4. Xanthomonas citri: The Pathogen of Citrus Canker Disease and Its Management Practices; 5. Trichoderma spp.: Identification and Characterization for Pathogenic Control and Its Potential Application; -- PART 3: Microbiology for Soil Health and Crop Productivity Improvement; 6. Nitrogenase: A Key Enzyme in Microbial Nitrogen Fixation for Soil Health; -- PART 4: Microbiology for Environmental Security and Pollution Control 7. Microbiology of Aqueous Environments: Interactions, Effects, and Homeostasis8. Bioremediation of Pesticides: An Eco-Friendly Approach for a Clean Environment; Index