This book, which focuses on the major diseases of important field crops and horticultural crops, and their management, offers a comprehensive account of these topics. The authors have provided supporting evidence through numerous high-quality, hand-drawn illustrations. The book also includes a section on the cultivation of edible mushrooms commonly grown in India, as well as information on the diseases and pests that affect mushroom beds and mushrooms. This information may be particularly useful for emerging entrepreneurs. Additionally, the book has been designed in accordance with the undergraduate syllabus of agricultural institutions and will also be beneficial for postgraduate students and those working in the department of agriculture.