Plant pathology and soil biology have been my research areas since 30 years. My key interests are disease suppression, soil management, and plant pathogen ecology – the topics I worked on for 20 years at Wageningen University, and for 10 years at BLGG/Eurofins and SoilCares Research.

To me, the field is fascinating: at first sight all plant pathogens seem similar, but at closer look they’re spectacularly different. As a result, you need quite specific approaches to manage them. I’m also intrigued by how everything in soil systems is interconnected, and how agricultural practices such as crop residue management, soil tillage, crop rotation and organic matter management have overlapping effects on soil functioning. I like working in a team with experts from other disciplines, such as economists and crop specialists, and enjoy discussing the facts and fables about soil quality. My ultimate goal is to help growers increase the sustainability of their crop production systems.

Publications: see my CV (pdf).

2013-2017Senior researcher at SoilCares Research, Wageningen
2007-2013Senior researcher at BLGG (now Eurofins), Wageningen
1999-2007Associate professor at the department of Biological Farming Systems, Wageningen University
1990-1999Assistant professor at the Department of Phytopathology, Wageningen University
1989-1990Postdoctoral Researcher at Wageningen University, Department of Forestry. Project: Effects of forest fertilization on mycorrhizal fungi.
1989-1990Postdoctoral Researcher at Institute of Plant Protection Research, Wageningen. Project: Crop rotation aspects of introducing fibre hemp and oil-containing crops in the Netherlands.
1985-1991PhD student at the Department of Phytopathology, Wageningen University. Project: Decline of carpophores of mycorrhizal fungi in stands of Pinus sylvestris in the Netherlands.
1978-1985B.Sc. and M.Sc. Plant Pathology at Wageningen University. Projects:
- arbuscular mycorrhiza in maize
- downy mildew in spinach
- Armillaria species in the Netherlands
- soil temperature dynamics