Synopsis During 20 century novel approaches made for exploitation of microorganisms have increased the research interest and applicability of microorganisms in the area of agriculture, food, health care, industry and environment. It has led to substantial enhancement in economic growth of the country so as to improve the life style of human beings. In future too purposeful exploitation of microorganisms would be enhanced due to increased demand of microbe-based products. The book contains 23 review articles of active researchers through out the country. These articles cover some major field such as rhizosphere microbiology, microbial biotechnology, bioremediation, fermentation technology, food and feed technology, eco-friendly mycoherbicides, biocontrol strategies, mycorrhizal fungi, bacterial and cyanobacterial biofertilizers, biocontrol agents, mycotoxins and marker methods. The book will be useful to the researchers, teachers and post-graduate students associated with research and/or teaching microbiology, plants pathology, industrial microbiology, environmental sciences and microbial biotechnology.