Phytopathology is significant in agriculture because it focuses on the study of plant diseases and their management. Understanding plant-pathogen interactions allows for the development of effective strategies to prevent and manage diseases that can severely impact crop yields. By studying phytopathology, researchers can improve crop resilience, enhance food security, and contribute to sustainable agricultural practices. Moreover, effective management of plant diseases reduces the need for chemical inputs, promoting a healthier ecosystem and better environmental stewardship.