Seed pathology makes a comprehensive study of the seed borne diseases and pathogens. Mechanisms of infection, seed transmission, role of seed-borne inocula in seed development, techniques for detection of seed-borne pathogens and non-pathogens, seed certification standards—all these make up for the curriculum of the subject. Besides, diseases caused by bacteria, fungi, viruses, nematodes, viroids etc., and the physiological and mechanical disorders of seeds, are also important factors contributing to the study. This book seeks to facilitate the reader to grasp the basic principles of seed pathology. With the immense potential of seed science and technology to made huge contributions to the future of agricultural sector, seed pathology should be all set to gain from such a scientific revolution. Bringing forth a comprehensive analysis of the subject, it is hoped that this manual fosters an enriching learning experience for the reader.