Farmers will be opening their gates to the public this weekend to show the benefits of a pioneering technique. Jeannie Buckingham and her partner were inspired more than 15 years ago to take up agroforestry, an integrated approach to farming that incorporates strips of trees and crops on the same piece of land. To mark Agroforestry Open Weekend, Ms Buckingham’s 2 Fields, a nine-hectare community-supported farm on the edge of Debenham, will show others what it is about. “We use permaculture principles of earth care, people care and fair share,” she said. “We grow with nature, which means that w…