This book provides detailed information about all the aspects of agronomy in agricultural practices. The different chapters in the book are compiled after analysing the information available in vaarious sources. The book highlights ICAR at glance, agriculture current affairs, revolutions and important days related to agriculture and allied sciences, agronomy important terminologies, essential elements functions and deficiency symptoms in crops, important agronomy formulas, weed management, agronomy point to points, text books and their authors. We are grateful to the authors for the contributions. I congratulate the Astral Publications for bringing out the publication Agronomy Gateway. I also thank and to the editors and the contributors for different chapters for their valuable time and efforts.