TY JOUR TI Elements of organic cultivation technology of spring barley in the Middle Volga region forest-steppe KW organic farming KW organic fertilizers and bio-products KW spring barley KW root rot KW bread beetle KW yield JO Agrarian Bulletin of the AU Olenin, O.A. AU Zudilin, S.N. PY 2022 IS 218 PB Ural State Agrarian University