Development of multistage plowing method that involves subsurface loosening Maxim P. Erzamaev, Dmitry S. Sazonov, Leila S. Kurmanova, Evgeny S. Nesterov and Alexey E. Shlykov BIO Web Conf., 37 (2021) 00044 Published online: 27 October 2021 DOI: 10.1051/bioconf/20213700044