The soil microrelief has strong implications for plant growth, especially the conditions for germination and establishment. The aggregate size distribution is the most important tillage outcome, and is usually determined by sieving. In 2013 a 3D-camera was tested in an ongoing project with very promising results, the present application deals with the development of this technique. The objectives are to: 1. Develop algorithms to directly transfer measured data to aggregate size distribution and soil surface roughness. 2. Develop automated image analysis to determine aggregate size distribution. 3. Develop the technique for on-line measurements. Measurements will be carried out in ongoing field experiments and with sieved aggregate fractions. The project will be run for 1 year and in cooperation with the University of Padova, Italy.