Design of a cultivator mounted on a tractor with a power of up to 20 kW Jarosław Selech, Dariusz Ulbrich, Włodzimierz Kęska, Żaneta Staszak, Jacek Marcinkiewicz, Dawid Romek and Przemysław Rogoziński MATEC Web Conf., 254 (2019) 05003 Published online: 15 January 2019 DOI: 10.1051/matecconf/201925405003