TY JOUR TI RESISTANT OF TRITICUM AESTIVUM VARIETIES OF DIFFERENT ORIGIN TO BIOTIC STRESSORS ON THE FOREST-STEPPE AND STEPPE ZONES OF ORENBURG URALS KW soft wheat KW pathogen KW the degree of damage KW the phytosanitary situation KW crop losses KW variety KW resistant. JO Vestnik of Kazan State Agrarian University AU Timoshenkova, T.A. AU Mukhitov, L.. AU Samuilov, F.. PY 2015 IS 10 PB Kazan state agrarian University