Objective Plant Pathology is a comprehensive, exam-oriented book designed to provide a clear and concise understanding of plant diseases, their causes, development, and management. Covering the entire spectrum of plant pathology—from fundamental concepts to advanced and emerging areas—the book presents well-structured content in an objective format suitable for quick learning and effective revision. It includes detailed coverage of fungi, bacteria, viruses, nematodes, epidemiology, disease management strategies, and crop-wise important diseases, along with modern diagnostic techniques. Carefully curated questions and concept-based presentation make this book an essential resource for mastering both theoretical and applied aspects of plant pathology. This book is ideally suited for undergraduate and postgraduate students of agriculture and allied sciences, as well as aspirants preparing for competitive examinations such as ICAR-JRF, SRF, NET, State Agricultural Services, UPSC and other entrance tests. It will also be highly useful for teachers, researchers, extension workers, and professionals seeking a reliable reference for plant disease identification and management.