TY JOUR TI DEVELOPMENT AND JUSTIFICATION OF A SCARIFIER WITH A CONE DISC FOR BEAN SEEDS KW alfalfa seeds KW seed scarification KW cone surface KW discrete element method KW angle of repose KW calibration KW Rocky DEM JO Vestnik of Kazan State Agrarian University AU Khasanov, E.R. AU Mirzamatov, R.R. AU Yakupov, A.M. AU Yamaletdinov, M.M. PY 2023 IS 18 PB Kazan state agrarian University