Field and Laboratory Evaluations of Bacillus Thuringiensis Strains for Control of Elm Leaf Beetle    (View PDF)

Whitney S. Cranshaw, Steven J. Day, Thomas J. Gritzmacher, and Rick J. Zimmerman

Abstract: The elm leaf beetle, Xanthogaleruca luteola (Muller), is a serious defoliating pest of elm throughout much of North America. Petrochemically-derived insecticidal sprays have been a common management practice for this insect but increasing environmental concerns and regulatory restrictions have required that alternative insecticides be considered. Recently, new strains of Bacillus thuringiensis ("San Diego", "tenebrionis") which have activity against leaf feeding beetles have been discovered and become available. Field and laboratory trials indicate that these are highly effective against larvae of elm leaf beetle. Some adulticidal activity also is present with these formulations. Persistence of the tested formulations on foliage was short so proper timing of treatments is important for effective control.

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https://doi.org/10.48044/jauf.1989.008