TY JOUR TI BROWN RUST OF RYE: ANALYSIS OF LONG-TERM DYNAMICS AND SUSTAINABILITY SOURCES KW winter rye KW pathogen KW brown rust KW prevalence KW degree of development KW harmfulness KW resistance KW source JO Vestnik of Kazan State Agrarian University AU Ponomareva, M.L. AU Ponomarev, S.N. AU Mannapova, G.S. AU Gil'mullina, L.F. AU Fomin, S.I. AU Ilalova, L.V. PY 2019 IS 14 PB Kazan state agrarian University