The book comprises eight chapters covering the latest information on Soil as an environment for plant pathogens, Nature and importance of rhizosphere and rhizoplane, Soil and root Inhabiting fungi, Types of biocontrol agents, Inoculum potential and density in relation to host and soil variables, Competition, Predation, Antibiosis and Fungistasis, Conducive and Suppressive soils and finally, Biological control-Concepts potentialities of bioagents for managing soil borne pathogens. Appropriate diagrams, convincing tables and suitable graphs / illustrations have been furnished at the right places. A bibliography providing the list of references cited has also been included at the end of each chapter.The contents of this book, reflecting an extensive literature search, will also be useful for the teaching, research and extension faculty in Agricultural and Horticultural Universities, the State Departments of Agriculture, Horticulture, Forestry, Sericulture Fisheries, Plant Protection Organizations, Plant Quarantine Units, Administrators Policy makers and all those who are interested and concerned with plant protection.