Soil quality is defined as the condition of soil necessary for the survival of any living species. Soil quality incorporates agricultural soil science as well as soil management and soil ecology. Soil quality and soil management, together aim to facilitate sustainable ecological practices that will support plant and animal life as well as the management of related fields of irrigation and sowing practices. This book covers in detail some existent theories and innovative concepts revolving around soil ecology and management. Different approaches, evaluations, methodologies and advanced studies in this field have been included in this text. It is appropriate for students seeking detailed information in this area as well as for experts. It includes contributions of experts and scientists which will provide innovative insights into this field.