TY JOUR TI Effective technologies for the restoration of degraded pasture ecosystems and the creation of high-quality hayfields in the Don river basin KW haymaking KW phytomelioration KW yield KW species diversity KW Drude scale JO Agrarian Bulletin of the AU Vlasenko, M.V. AU Turko, S.Y. AU Rybashlykova, L.P. PY 2023 IS 234 PB Ural State Agrarian University