Toxicity and Field Efficacy of Four Neonicotinoids on Harlequin Bug (Hemiptera: Pentatomidae)

Authors

  • Anna K. Wallingford
  • Thomas P. Kuhar
  • Peter B. Schultz

Abstract

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.

Resumen: El chinche Arlequín, Murgantia histrionica (Hahn), es una plaga de cultivos de col en los Estados Unidos. Los ensayos de toxicidad de laboratorio revelaron que los insecticidas neonicotinoides imidacloprid, tiametoxam, dinotefurano y clotianidina son tóxicos a las ninfas del chinche Arlequín; CL50 = 0.57, 0.52, 0.39 y 0.39 g ia / L, respectivamente. Se realizaron experimentos de campo para evaluar la eficacia de estos insecticidas con el tiempo de aplicación cuando se usa una sola vez como un regado al suelo. Cada uno de los 4 neonicotinoides proveyeron un control significativo contra el chinche Arlequín por lo menos 14 días después de la aplicación.

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Published

2012-12-01

Issue

Vol. 95, No. 4 (December 2012)

Section

Research Papers

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