TY JOUR TI POSSIBILITY OF BIOLOGICAL VINEYARD PROTECTION FROM MILDEW WITH THE HELP OF A BIOLOGICAL PREPARATION KW grapes KW downy mildew KW weather conditions KW chemical fungicides KW biological agent JO Bulletin of KSAU AU Arestova, N.O. AU Ryabchun, I.O. PY 2022 IS 0 PB Krasnoyarsk State Agrarian University