Journal
FLORIDA ENTOMOLOGIST
Volume 95, Issue 4, Pages 1123-1126Publisher
FLORIDA ENTOMOLOGICAL SOC
DOI: 10.1653/024.095.0442
Keywords
Murgantia histrionica; imidacloprid; thiamethoxam; dinotefuran; clothianidin
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Funding
- Southern Sustainable Agriculture Research and Education (SARE)
- Virginia Department of Agriculture and Commercial Services (VDACS)
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Harlequin bug, Murgantia histrionica (Hahn), is a pest of cole crops in the USA. Laboratory toxicity assays revealed that the neonicotinoid insecticides imidacloprid, thiamethoxam, dinotefuran, and clothianidin are toxic to harlequin bug nymphs; LC50 = 0.57, 0.52, 0.39, and 0.39 ppm, respectively. Field experiments were conducted to evaluate the efficacy of these insecticides over time when applied as a one-time soil drench. Each of the 4 neonicotinoids provided significant control of harlequin bug for at least 14 d after application.
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