Onno Muller is a plant ecophysiologist interested in how and why plants respond to their environment, specifically photosynthesis and related traits of plants and crops in their natural habitat. With his group he combines advanced sensors as well as advance positioning for high spatial and temporal throughput of plant trait measurements. Among others he integrated and coordinates these field phenotyping approaches in the Agri Food and Energy park Alt- Morsenich with different Agriphotovoltaics systems.