Samenvatting

Agricultural production systems may influence each other in a negative way, with conflicts as a consequence. In general, such conflicts are resolved technically in an ad hoc manner, at farm or greenhouse level. There is no structural attention to so-called co-existence problems. This article makes a plea for acknowledging such problems as policy issues and for grouping these together under the label of co-existence conflicts, broadening this phrase beyond its traditional meaning related to conventional, organic and GM crop production. Co-existence conflicts are concrete, local expressions of the tensions between conflicting values incorporated in the current agricultural system. It is argued that because they are manifestations of conflicting value systems, they offer useful stepping-stones to practically organise and channel discussions on sustainable development in agriculture.