1. Julius Kühn Institute, Federal Research Centre for Cultivated Plants, Institute for Biological Control, Dossenheim, Germany
2. Department of Plant Diseases and Crop Protection, Institute of Phytopathology, Faculty of Agricultural and Nutritional Science, Christian-Albrechts-University of Kiel, Kiel, Germany
3. Variationsstatistik, Faculty of Agricultural and Nutritional Sciences, Christian-Albrechts-University of Kiel, Kiel, Germany
4. EVONTA-Service GmbH, Lohmen, Germany
5. DSV Deutsche Saatveredelung GmbH, Asendorf, Germany
6. Julius Kühn Institute, Federal Research Centre for Cultivated Plants, Institute for Plant Protection in Field Crops and Grassland, Braunschweig, Germany