It involves using local natural resources such as plant products, cattle dung, neem cake ( the by-product of making oil from the neem tree) and compost instead of chemical fertilisers and pesticides. 它使用了当地的植物产品、牛粪、印楝饼(用印楝树制油的副产品)等自然资源以及复合肥,而没有使用化学肥料和杀虫剂。