The phosphorus concentration in the Greifensee continues to exceed the target value, due to excessive phosphorus inputs. No relevant water pollution by nitrogen is currently evident. Phosphorus and nitrogen inputs from diffuse sources have been estimated with the aid of the Modiffus model. High phosphorus inputs are principally due to leaching of drained arable land, soil erosion from arable land and run off from grassland. High nitrogen inputs are the result of leaching and drainage losses from arable land. Further model calculations show the potential for reducing phosphorus pollution. Measures by farmers will not reduce phosphorus inputs sufficiently in the medium term to reach the target value for the Greifensee.
Grass-based beef production is markedly less productive than intensive year-round indoor-housing system-based production. Agroscope experts therefore studied how grass-based farms can produce both economically and in an ecologically sound manner.
Orchard crop spraying using unmanned aerial spraying systems commonly referred to as drones can lead to drift, posing a risk to residents and bystanders. The study shows that the risks arising from this are taken into account by the current registration process.
Trials conducted by FiBL have shown that conversion to organic farming also promotes endangered Red List species such as the carabid beetle species Amara tricuspidata. This species and other species consume seeds of forbs and grasses and thus supports natural weed control.