Frits K. Van Evert1, Spyros Fountas2, Thanos Balafoutis2, Pieter Blok3, Chris van Dijk3, Sandra Wolters3, Sakura Tomita3, Sasa Marjanovic4, Milica Trajkovic4, Samy Aït-Amar5, Marcos Apesteguía6, Klaus Erdle7, Harm Brinks8, Beatriz Arribas9, Ulrich Adam9, Stephane Volant10 and David Tinker11, (1)Wageningen University & Research Centre, Wageningen, Netherlands, (2)Agricultural University of Athens, Athens, Greece, (3)Wageningen University & Research, Wageningen, Netherlands, (4)BioSense Institute, Novi Sad, Serbia, (5)ACTA, Paris, France, (6)INTIA, Navarra, Spain, (7)DLG, Frankfurt, Germany, (8)Delphy, Wageningen, Netherlands, (9)CEMA, Brussels, Belgium, (10)FRcuma Ouest, Rennes, France, (11)DAVID TINKER & ASSOCIATES LTD, AMPTHILL, United Kingdom