He leads research on the impact of cropping systems on weed communities and their biological regulation both in terms of mechanisms and practical implementation in agroecosystem management. The scientific objectives of his research are two-fold: (i) to understand how weed communities respond to agricultural management over time (i.e. changes in population size, diversity and functional traits) and (ii) to evaluate to what extent the biological regulation of weeds can help to reduce reliance on herbicides. The practical objective of his research is to design biodiversity-based cropping systems that reduce herbicide use by implementation of no-till and cover crop management and to assess system sustainability in terms of weed regulation and economic viability. He currently leads the scientific and operational aspects of the INRAE CA-SYS platform with Violaine Deytieux. The platform CA-SYS is one of the major tools he co-developed with farmers, crop advisors, researchers, etc., to test the hypothesis that wild and cropped diversity could be a means to sustainable pesticide-free productions. He is a member of the CTPS (French Plant Variety Registration Office) section evaluating cover crop varieties before their registration on the French and European official list. He is also a member of the scientific committee Terres Inovia, the technical center for oil and protein crops.