The textbook provides brief updated information about principles of soils, as they exists and interact in the environment with focus on fertilizer and manure. The book presents compendium of information's that is of importance to students in their curriculum, such as soil science, agronomy, horticulture and forestry as well as to non-agricultural students of plant science, ecology, natural resources and environmental studies. It will serve as a foundation text for agriculturist and lay person as well. The book will be useful for students, associated with conservation, forestry environmental sciences.