Back to profile profile_subnav_contactperson - dr.ir. L (Lammert) Bastiaans type_page Thesis projects Crop-weed interactions Weeds are the most important biotic yield-reducing factor in terms of potential yield loss. Increased societal concern on the environmental and public... News Thesis research in times of Corona 9 september 2020 | Maurice Olthuis recently started his MSc thesis research at CSA.