Comparative assessment of the tillage quality of commercial and combined plow bottoms S.V. Streltsov, R.N. Mustyakimov, N.P. Ayugin, V.E. Proshkin and I.R. Salakhutdinov E3S Web Conf., 392 (2023) 01031 Published online: 06 June 2023 DOI: 10.1051/e3sconf/202339201031