**2.2 Description of the erosion facility**

In order to measure the effects of different techniques on erosion, a mobile erosion facility with three chambers was set up. Figure 1 shows a sketch of the erosion facility. The surface runoff and soil losses from 3 different plots (40 m² each) were collected at the bottom of the plots and passed through a tube to 3 deposit containers for heavy soil components. Water, containing dissolved soil components ran to tip pans of 0.5 and 2 litres (working in dependence on the amount of water) for each plot. The tip pans were connected to a data logger. A bypass was collecting samples automatically. Together with the data of the climatic station, the relation between precipitation and surface runoff was worked out. Measuring the heavy soil components and the dissolved components in the sample container, soil losses were calculated too. For this was very time consuming, soil losses were measured only three times a year for each trial. Therefore, detailed information about soil losses during single raining events was not available.
