TY JOUR TI INFLUENCE OF PRECURSES AND SOWING DATE ON OVER-WINTERING AND WINTER WHEAT PRODUCTIVITY UNDER CHANGING REGIONAL CONDITIONS KW climate change KW winter wheat KW predecessor KW sowing time KW yield KW grain quality KW gluten KW protein JO Vestnik of Kazan State Agrarian University AU Sharipova, R.B. AU Hakimov, R.A. AU Hakimova, N.V. PY 2020 IS 15 PB Kazan state agrarian University