This book provides a comprehensive description of the significant plant diseases that affect important field crops and horticultural crops, as well as their management. The authors have supported their text with numerous high-quality hand-drawn illustrations, which serve as a valuable addition to the book. Additionally, the book covers the cultivation of various edible mushrooms commonly grown in India, as well as the diseases and pests that affect mushroom beds and mushrooms themselves. This information may be particularly beneficial to aspiring entrepreneurs. The book has been designed to align with the undergraduate curriculum of agricultural institutions, and it may also be useful to postgraduate students and professionals working in the agricultural department. Please note that no changes can be made to the citation, reference, or in-line citations in the text, and no modifications can be made to the numbers presented.