Advice for inspector’s training / compiled by: SPISE Technical Working Group 5 ; authors: Eskil Nilsson (VISAVI, Sweden), Harald Kramer (Landwirtschaftskammer Nordrhein Westfalen, Germany), Hans-Joachim Wehmann (Julius Kühn Institute, Germany) ; editor-in-chief: Prof. Paolo Balsari, University of Turin ; publisher: Julius Kühn Institute - Federal Research Centre for Cultivated Plants