We investigated the potential of two registered microbial insecticides to control emerald ash borer adults (EAB), Agrilus planipennis Fairmaire (Coleoptera: Buprestidae). In laboratory bioassays, adult EAB treated with Raven®, a bioinsecticide formulated with Bacillus thuringiensis var. kurstaki EG7673 expressing Cry3Aa, Cry3Bb, and Cry1Aa toxins, died 3 to 5 days after treatment; feeding inhibition and mortality were dose dependent. Another bioinsecticide, Botanigard®, formulated with Beauveria bassiana GHA, was virulent against adult EAB in laboratory bioassays, with an approximate LC50 of 4 spores/cm2 and an LT50 ranging from 4 to 14 d. The results of cage studies and small-scale field applications for both pathogens will also be presented.
Species 1: Coleoptera Buprestidae Agrilus planipennis (emerald ash borer)
Species 2: Moniliales Moniliaceae Beauveria bassiana
Species 3: Bacillales Bacillaceae Bacillus thuringiensis
Keywords: microbial control
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