This is the first book to integrate the physical, chemical, and biological aspects of organic soils and peat materials for sustainable agriculture. It focuses on the principles and indicators behind positive actions in the sustainable management of organic soils and peat substances. The book presents a detailed analysis of how peat works chemically, physically, and ecologically. It quantifies the moorsh-forming, or peat degradation, process in tables and figures, provides conversion equations among pH determination methods, supplies a novel diagnosis of N and P release, and describes the best management practices. In addition, the book revisits water, pesticides, phosphorus, and copper sorption characteristics of organic soils.