Soil Microbiology deals with fundamental aspects of microorganisms, their relationships to agriculture with an emphasis on improving the soil fertility and crop yields, biodegradation of crop residues, and combating pests and diseases.A fascinating and relatively interesting area of this Microbiology is the study of how these tiny life forms communicate and interact with each other in the soil environment. Soil microorganisms play essential roles in the nutrient cycling that are fundamental to life on the planet. The book covers the syllabus of various Universities, both undergraduate and postgraduate and the information presented in the book will fulfill the need.The bookis clear and simple, which is explained through various diagrams. It is believed that the publication is needful not only to the students but also to the academic professionals.