Trees in agricultural landscapes provide important benefits for the environment. Nevertheless, they are disappearing from cultivated land due to economic and operational reasons. In modern agroforestry systems, trees are planted in rows on agricultural land in order to facilitate the mechanical processing.The economic and ecological potential of modern agroforestry systems in Switzerland were examined. Productivity per hectare, profitability and environmental benefits were estimated using computer-aided models. The results show an up to 30% higher productivity (per unit area) of agroforestry systems compared to monocultures. In the long term, agroforestry systems can become economic profitable. On fertile arable land, they may reduce soil erosion by 78% and nitrate leaching by 46%as well as sequester up to 133 tons of carbon in 60 years. In interviews, farmers were questioned about their perception of benefits and disadvantages of agroforestry. Farmers rate agroforestry systems as non-productive and unprofitable. However, they admit a benefit for biodiversity and cultural landscape. Farmers need to be made aware of the many agroforestry designs and their economic potential, based on the experience of pioneer farmers.
Herbicide-resistant weeds are a growing problem throughout the world. Monitoring herbicide resistance in Switzerland allows us to understand the mechanisms behind it and to better manage the use of herbicides.
Agroscope compared crop protection strategies in apple production. Reducing the use of plant-protection products lowered the local ecotoxological risks, but resulted in trade-offs between environmental and economic performance.
Bacillus thuringiensis (Bt) bacterium proteins protect Bt maize from being fed on by specific insects. A new, systematic analysis of international field data confirms that non-target organisms in Bt maize are largely spared.