Biogas Digestates as Organic Fertilizer in Different Crop Rotations

B. Formowitz & M. Fritz
In a nation-wide joint research project different bioenergy cropping systems are tested for their yield performance, ecological impacts and economic feasibility. Crop rotation experiments were set up in different typical agrarian regions of Germany. In one of the satellite experiments (experiment A), nutritional effects and mineral N equivalency of biogas digestates are determined. Different rates of digestates are compared with a minerally fertilized control and a treatment without any amendments. In experiment A maize is...