Fundamentals of Plant Pathology is a book meant for undergraduate students of agricultural universities, covering introductory and basic information in the field of Plant Pathology. The book has been divided into 19 chapters consisting of basic concepts, terminology, pathogenesis, causes, infection process, defense mechanisms, epidemiology and various principles of plant disease management. Each chapter has been further divided into subheads so as to cover all aspects within a specific topic. The book has been planned in a manner to expose the students on all basic concepts of plant pathology covering the updated syllabus proposed by Fifth Dean's Committee of Indian Council of Agricultural Research. The book will be very useful for all the teachers and students of Plant Pathology.