Research with multiple cropping systems in parallel increases the potential for knowledge transfer from organic to conventional systems, and vice versa. In this project, whose aim is to develop cropping systems towards greater sustainability, we work on long-term trials that have a unique opportunity to contribute to research with a holistic perspective. To push development forward and evaluate the farming systems key figures are used for different goals which together may conflict: good economy, fossil energy efficiency, less nematodes in vegetable crop rotations, IPM in conventional systems, improved yields in organic cropping systems, etc. The two experimental sites Bollerup and Önnestad have two conventional and three organic crop rotations including one cropping system where the focus is on biogas production and use of digestate. For horticulture, the works with nematodes and with bioactive compounds are of special relevance.