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Abstract

Redheaded flea beetle, Systena frontalis (F.) (Coleoptera: Chrysomelidae), is a foliage-feeding pest in ornamental container nurseries. In 2021 and 2022, three experiments were conducted to develop pest management tactics for S. frontalis in nurseries. Results show that high densities of S. frontalis larvae overwinter in potting media of plant containers as a high number of adults consistently emerged from the plant containers. As nonchemical management tactic, the overhang fence barrier reduced S. frontalis damage on panicle hydrangea foliage regardless of insecticide impregnation. Of 13 insecticides tested, adult S. frontalis survival and incidence and severity of feeding damage were reduced when exposed to fresh 7 d field-aged residues of tetraniliprole, and cyclaniliprole.

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