My major research is in the area of herbicide selectivity, joint action of pesticide mixtures and ecotoxicology of pesticides. I also have worked with genetically modified crops and risk assessment. I have been involved in various national and international projects within my area of agricultural research and have had assignments in Africa and Asia. My teaching is primarily in Weed and Crop Science and pesticide use mode of action and ecotoxicology. I am a member of European Weed Research Society and served for 15 years as editor of Weed Research and three years as subject editor of Crop Protection. I held the office of Scientific Secretary for the European Weed Research Society (EWRS) for eight years. My updated publication list is available here.