Exploitation of Biogas Digestates to Meet Nutrient Demands of Different Cultivars in a Crop Rotation

B. Formowitz, M. Fritz & F. Heimler
In a nation­wide research project different crop rotations were established in various typical agrarian regions of Germany. In order to produce predominantly crops as biogas substrates the rotations are tested for their yield performance, ecological impact and economic feasibility. With the intention to close nutrient cycles by using biogas digestates as organic fertilizer, a satellite experiment was set up in 2009 to compare their humus accumulation capacity to an exclusive mineral fertilization. Furthermore, the combination...