Greenfield, John C.

After farming sheep and cattle in New Zealand, John Greenfield worked in the tropical wet and arid zones of developing countries for forty years developing a system of soil and moisture conservation that would be sustainable in extreme climates. The last 18 years of his career were with the World Bank as a senior agriculturist. During this period he saw the inappropriateness of the accepted systems of engineered conservation measures, and he made it his mission to develop a simple eco-friendly and affordable technology to the poorest subsistence farmers. John Greenfield association with erosio...