Although soybean is a major global crops, with significant disease losses,.application of control is limited, often because of incomplete understanding of disease extent of disease and feasibility and benefits of control. This book demonstrates economic analysis can assist better management strategies. Following an overview of global soybean diseases and their economic significance. evidence on disease incidence and severity and management techniques are discussed. Farm-level decision-making on economic payoffs of alternative disease practices is discussed, with focus on new technologies. Empirical case studies on soybean seedling disease and soybean root rots are detailed. A global economic model is considered.