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Timing of insecticide applications for the control of the Colorado potato beetle, Leptinotarsa decemlineata (Say), (Coleoptera: Chrysomelidae), on potatoes in New Brunswick



Timing of insecticide applications for the control of the Colorado potato beetle, Leptinotarsa decemlineata (Say), (Coleoptera: Chrysomelidae), on potatoes in New Brunswick



Canadian Entomologist 120(6): 587-591



Different insecticide spray regimes were tested in 1984, 1985, and 1986 to determine the optimal time to control the Colorado potato beetle, Leptinotarsa decemlineata (Say), on Russet Burbank potatoes in New Brunswick. Insecticides applied in mid-July at the peak of larval abundance when plants were entering into bloom had the greatest efficacy in controlling beetles and protecting the yield. A single insecticide application at 50% bloom was 12-17% and 82-95% more effective than one application at bloom and full growth, respectively.

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Accession: 001719734

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DOI: 10.4039/ent120587-6


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