1. AGROINNOVA; Centre of Competence for Agro-Environmental Innovation; University of Torino; Largo Paolo Braccini 2, Grugliasco Torino 10095 Italy
2. DISAFA; University of Torino; Largo Paolo Braccini 2, Grugliasco Torino 10095 Italy
3. National Plant Protection Organization; National Reference Centre; PO Box 9102 Wageningen 6700 HC Netherlands