Facilitated transport of pesticides

1 Purpose

The purpose of the project was to contribute to the understanding of colloidal transport in structured soils and the importance of colloid-facilitated transport to the leaching of pesticides to surface waters. Furthermore, the purpose was to develop a component for the MIKE SHE model, which could be used for a quantitative evaluation of colloid-facilitated transport of pesticide through the unsaturated zone.

Following the purpose stated, the project consisted of two main parts: an experimental part and a model-development and testing part.

This report focuses on the experimental results and on the modelling of these results, whereas the model documentation can be found in Styczen et al. (2002).