Synopsis This manual has been written primarily to meet the requirements of undergraduate students of B. Sc. (Agriculture) in the fields of Plant Pathology and Botany and also for technicians who need to know the laboratory methods of Plant Pathology. The manual includes practical exercises covering all undergraduate courses in Plant Pathology, namely, introductory plant pathology, Crop Diseases and Management, Mushroom Cultivation, Plant Clinic and Seed Pathology. In view of the new and uniform course curriculum for B. Sc. (Agriculture) being followed in the country, the manual will be of great help to students undergoing this course as well as in Seed Technology. The manual will also serve as a reference book for teachers in the fields mentioned above. Practising professionals in the field will also find this book useful as it contains information on diverse topics of Plant Pathology.