This book is truly a ‘tour de force’ of condensation of the essentials of scientific knowledge and approaches to soil science and discusses the various aspects of soil fertility and crop nutrition with a focus on experimental aspects including basic analytical chemistry, collection, preparation and analysis of soil, plant and water. Presents the basic concepts and approaches to outline the application of such techniques used in the experimental soil biology and fertility to address a wide range of disciplines, standard methodologies, and analytical research techniques, with an emphasis on modern instrumental methods. Emphasis is placed on sampling and sample preparation, followed by a description of the possible instrumental methods available for the analysis of physico-chemical and biological properties, in addition to soil available nutrients and plant nutrient contents. Consists of 41 well-defined and illustrative comprehensive chapters, written in such a way that the reader shall easily understand various aspects of experimental soil biology and fertility, igniting the minds of readers to have in-depth understanding of the subject, in addition to inspire them to expand their ideas and horizons in all possible ways. The book is well presented and self explanatory and will be of very much useful for the undergraduate and post graduate students, researchers of soil science and other disciplines related to agriculture, horticulture and forestry, in particular and the scientific community, as a whole. This book will add value for sure and deserves to be the standard text book on experimental soil biology and fertility in agricultural / horticultural / forestry colleges and universities across the world.