TY JOUR TI OPERATION OF SOIL-CULTIVATING IMPLEMENTS IN CONDITIONS OF NON-UPROOTED CLEARINGS IN THE EUROPEAN PART OF RUSSIA: ANALYSIS OF OBSTACLES IN THE FORM OF STUMPS AND ROOTS KW tillage implements KW not uprooted clearings KW number of stumps in clearings KW average height of stumps KW pine root system JO Forestry Engineering Journal AU Malyukov, S.V. AU Pozdnyakov, E.. AU Degtyareva, S.I. AU Shavkov, M.V. AU Malyukova, M.A. AU Shanin, I.I. AU Ariko, S.E. PY 2023 IS 12 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov