This book is the outcome of a perception by the author's 28 years of experience as a teacher to have a textbook of fertilizers for the undergraduate and postgraduate students, researchers and teachers of State and Central Agricultural Universities (SAUs/CAUs), Indian Council of Agricultural Research (ICAR) and other Academic Institutions. This book addresses the courses dealing with fertilizers and their uses, occupying an important position in the post-graduate and Ph.D. curricula of all the SAUs/CAUs, ICAR Institutes and other agricultural colleges in the country. It encompasses classification of fertilizers, details on nitrogenous fertilizers, different feedstock, raw materials, synthesis of ammonia, manufacturing process of nitrogenous fertilizers and their chemical and physical properties, methods of application and fates to soils, manufacturing process of phosphatic fertilizers - their chemical and physical properties, methods of application and fates in soils, manufacturing process of potassium fertilizers - their chemical and physical properties, methods of application and fates in soils, fertilizers containing secondary nutrients and micronutrients, slow-release or controlled-release fertilizers - their importance and scope in the present context, and specifications of different fertilizers. In this book, the author has given systematic and in-depth coverage related to fertilizer technology and their systematic application under different soil-plant conditions. It has been written to provide the basic principles and theories employed by the fertilizer industries. This publication will be of immense use to all concerned with fertilizers use and agricultural development such as agricultural administrators, researchers, teachers, students, soil chemists, extension workers, farmers, field advisor and marketing staff of the fertilizer industry, trading organization, training centres and international institutes.