Soil core sampling started

In November, we started with the soil sampling for work package 2. For the first two sites, we have chosen an intensive sampling scheme, using soil cores along transects from the field to the buffer strip, as well as inside and outside of the area of concentrated runoff. Together with samples from different depth classes from the soil cores, we get a 3D representation of the field and buffer strip. This labour-intensive approach is rarely seen in buffer strip research, although it provides high quality data and ample opportunities for in-depth analyses. The samples will then be analysed for various physical and chemical parameters, with a focus on phosphorus (e.g. different P pools, degree of P saturation, P sorption index). Further sites will get sampled next year.

Grassed strips between fields and surface waters act as buffers and retain sediment and nutrients. (C) BAW-IKT / Ramler
Agricultural areas can export substantial amounts of sediment – and nutrients – after heavy rainfall events. (C) BAW-IKT / Ramler