This book aims to provide simplified, concise, and updated information on various aspects of agricultural sciences. Its primary goal is to enable readers to quickly and comprehensively grasp facts from different branches of agriculture. In its 25th edition, the text has been expanded, updated, and thoroughly revised to incorporate the latest questions, findings, data, and technologies. We believe that this book will also serve as a valuable reference for teachers, researchers, and development officers, assisting them in addressing complex queries more easily. Specifically designed for aspirants of competitive examinations such as NTA AIEEA-ICAR (CUET)-JRF/NTS(PGs), Senior Research Fellowship (SRF), NTA ICAR-National Eligibility Test (NTA ICAR-NET), and Agricultural Research Services (ARS), this book will also aid in seeking admission to Ph.D. programs through entrance examinations conducted by various State Agricultural Universities (SAUs) and institutions. Additionally, it can help individuals prepare for screening tests held by states for positions in Agricultural Sciences, Civil Services, Agricultural Officers, Bank P.O. (Agriculture), ADO, and related agricultural fields.