Non-invasive imaging techniques to study O 2 micro-patterns around pesticide treated lupine roots

The soil–root interface is a highly heterogeneous system, e.g. in terms of O2 and pH distribution. The destructive character of conventional methods disturbs the natural conditions of those biogeochemical gradients. Therefore, experiments aiming to control these influences and study pesticide kinetics under given O2 and pH conditions suffer from a large uncertainty of the “real” O2/pH at a certain position. Our approach with two different imaging techniques will examine the soil–root interface as well as the dissipation of the applied pesticide at a high spatial resolution.