Crop Improvement is the main branch of Plant science/Plant Breeding and play an important role in improving crop plants in relation to their economic use for mankind. Crop Improvement is offered as a subject at UG and PG level in all the Indian Agricultural Universities and Colleges. The main objectives of writing this book "Crop Improvement-I (Kharif)" is to help National as well as International students. The main features of this book are given below:1. It covers the syllabus of different Agriculture sectors like Undergraduate,Postgraduate, Agricultural Research Services Examination and National Eligibility Test conducted by Indian Council of Agricultural Research, New Delhi.2.The language is simple and easily understandable.3.Key references have been given.I hope this book will be useful for the students, teachers and researchers in the field of Plant Breeding.