TY JOUR TI DEVELOPMENT CHARACTERISTICS AND BIOLOGICAL CONTROL METHODS FOR HELMINTHOSPORIUM SPOTS OF SPRING BARLEY KW plant diseases KW mycoses KW leaf spots KW Helminthosporium wilt KW biological control KW biological preparations KW spring barley JO Agrobiotechnologies and digital farming AU Safin, R.I. AU Medvedev, N.A. PY 2026 IS 4 PB Kazan state agrarian University