Bioavailable nitrogen is the element in soil that is most often lacking. Phosphorus and potassium are also needed in substantial amounts. For this reason these three elements are always identified on a commercial fertilizer analysis. Vigorously growing plants require adequate, but not excessive, essential nutrients. Nutrients must be provided in the right form, at the right time, and at the right place. Management of all nutrients sources within the constraints of the production system is fundamental to both economic viability and environmental quality. Poor management of plant nutrients can lead to economic losses and environmental degradation of soil, air, and water quality. The present book aims to acquaint the readers with the basics of soil fertilization, delineating for them the essential principles and concepts which define fertilisers and their contribution to the nutrient content of soils. Tracing the composition and grades of both natural and artificial fertilisers, the book attempts to equip readers with the knowledge necessary for effective application of fertilisers to soil, the principles, processes and practices which define them including management of nutrient content trends and technologies in the field of fertiliser development and management.
