1. IPI-URC-imec, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium
2. Department of Plants and Crops—URC, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
3. Institut für Zuckerrübenforschung An der Universität Göttingen, Holtenser Landstraße 77, D-37079 Göttingen, Germany
4. Department of Geography, Ghent University, Krijgslaan 281 S8, 9000 Ghent, Belgium