TY JOUR TI EFFECT OF CROP PREPARATION TECHNIQUES FOR HARVESTING ON PRODUCTIVITY AND BIOCHEMICAL COMPOSITION OF SEEDS OF SPRING RAPESEED OF THE RATNIK VARIETY AND THE SMILLA HYBRID IN THE MIDDLE PREDURALIE KW spring rapeseed (Brassica napus L.) KW productivity KW adhesives KW desiccants KW biochemical composition JO Vestnik of Kazan State Agrarian University AU Rudometova, O.A. AU Bogatyreva, A.S. AU Akmanaev, E.D. PY 2023 IS 18 PB Kazan state agrarian University