1. Hochschule Geisenheim University, Department of Agricultural Engineering, Von-Lade-Str. 1, 65366 Geisenheim, Germany.
2. Hochschule Geisenheim University, Department of General & Organic Viticulture, Von-Lade-Str. 1, 65366 Geisenheim, Germany.
3. University of Hohenheim, Institute of Agricultural Engineering, Technology in Crop Production, Garbenstr. 9, 70599, Stuttgart, Germany.