1. Research Centre Hoogstraten Hoogstraten Belgium
2. Biobest Group N.V. Westerlo Belgium
3. Evolutionary Ecology Group University of Antwerp Wilrijk Belgium
4. Research Station for Vegetable Production Sint‐Katelijne‐Waver Belgium
5. IFAPA Centro La Mojonera La Mojonera Spain
6. Wageningen University & Research, Greenhouse Horticulture Wageningen The Netherlands