This book represents a current look at what we know about organic farming practices and systems, primarily from the U.S. and Canadian perspectives. the discussion begins with history and certification, ecological knowledge as the foundation for sustaining food systems, and biodiversity. The next chapters address crop-animal systems; forages, grain, oil seed, and specialty crops; organic cropping and soil nutrient needs; and vegetation and pest management. Readers will next learn about marketing organics, organic foods and food security, and education and research. The book concludes with a survey of the future of organic farming and a perspective on the agricultural industry and the future of the rural sector.--COVER.