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Characterization Of Western Corn Rootworm (Coleoptera: Chrysomelidae) Susceptibility To Foliar Insecticides In Northeast Nebraska, Timothy B. Dang, Ana M. Vélez, Arnubio Valencia-Jiménez, Jordan Reinders, Emily E. Stricklin, Matthew W. Carroll, Clinton D. Pilcher, Jeffrey T. Krumm, Graham P. Head, Lance Meinke
Characterization Of Western Corn Rootworm (Coleoptera: Chrysomelidae) Susceptibility To Foliar Insecticides In Northeast Nebraska, Timothy B. Dang, Ana M. Vélez, Arnubio Valencia-Jiménez, Jordan Reinders, Emily E. Stricklin, Matthew W. Carroll, Clinton D. Pilcher, Jeffrey T. Krumm, Graham P. Head, Lance Meinke
Department of Entomology: Faculty Publications
Foliar-applied insecticides are commonly used for adult Western Corn Rootworm (WCR), Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), control in Nebraska but little efficacy data is available. Anecdotal reports of reduced efficacy in areas of northeast Nebraska led to the conduct of this study. Objectives were to (i) evaluate the efficacy of commercial applications of commonly used formulated insecticides (bifenthrin, lambda-cyhalothrin, chlorpyrifos, or tank mixes) for WCR control in 7 northeast Nebraska counties during 2019 and 2020 and (ii) conduct adult WCR concentration-response vial bioassays with bifenthrin, chlorpyrifos, and dimethoate active ingredients on a subset of field populations. Whole plant counts …