In the begin­ning there was an idea: Increase the fer­til­i­ty of its soils – without mineral fer­til­iz­ers. Thomas Unkel­bach, a farmer, has suc­ceed­ed with self-pro­duced biochar. In a car­bon­i­sa­tion plant he burns garden waste, green and shrub cut­tings. The biochar obtained in this way is used both in the field and in the cowshed.
Pub­lished in: Bay­erisch­er Rund­funk