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Protection Of Ash Trees Under Extended Emerald Ash Borer Pressure, Fredric Miller, Dan Mueller
Protection Of Ash Trees Under Extended Emerald Ash Borer Pressure, Fredric Miller, Dan Mueller
The Great Lakes Entomologist
Ten studies were conducted in northeastern Illinois from 2007 to 2015 to evaluate treatment formulations, rates, and application timing and methods for protection of green (Fraxinus pennsylvanica), white (F. americana) and blue ash (F. quadrangulata) trees from the emerald ash borer (EAB), Agrilus planipennis. Annual mid-May, June, July, and September basal soil drenches, basal broadcast applications, and basal trunk spray applications of imidacloprid, clothianidin, dinotefuran used alone, imidacloprid + clothianidin, dinotefuran + clothiandin, and trunk injections of emamectin benzoate were evaluated. Imidacloprid applied alone at 0.57 g a.i./2.54 cm dbh or greater, clothianidin and …