This book is designed to provide thorough information in the area of plant pathology. It is the study of the plant structure, the nature and effect of diseases they are susceptible to. Diseases in plants are often caused by either pathogens or abnormal physiological conditions. Plant pathology has relevance and applications across a number of other scientific fields such as crop production and management, forest science, etc. It also covers aspects of disease resistance and management in plants, causative pathogens, etc. This book unfolds the innovative aspects of plant pathology which will be crucial to the progress of the field in the future. From theories to research to practical applications, case studies related to all contemporary topics of relevance to this field have been included herein. This book also consists of researches that have transformed this discipline and aided its advancement. It is appropriate for students seeking detailed information in this area as well as for experts.