Currently 800 million people are undernourished, the world's food supply needs to rise significantly, yet both arable and water supplies per capita are decreasing. Not only are modern agricultural methods beyond the reach of those suffering the greatest food insecurity but they are also ecologically damaging, relying upon fossil energy and chemical inputs. "Agroecological Innovations" is a groundbreaking collection of innovative, successful and diverse approaches to agricultural development. Documented in 12 case studies, these approaches are reliant upon greater knowledge, skill and labour input, rather than larger capital expenditure. They are shown to increase yield substantially, sometimes doubling or tripling output. This volume presents the concepts and operational means for reorienting agricultural efforts towards these more environmentally friendly and socially desirable approaches in the developed as well as developing world. This guide to policy and practice will be vital for those professionals and policy makers involved in agriculture and food production as well as for academics and researchers.