Effects of fenvalerate insecticide on pollinators

Authors

  • D. F. Mayer Department of Entomology Washington State University IAREC Prosser, WA
  • C. A. Johansen Coeur d'Alene, ID
  • C. H. Shanks Southwestern Washington Research Unit Washington State University Vancouver, WA
  • K. S. Pike Department of Entomology Washington State University IAREC Prosser, WA

Abstract

Susceptibility to fenvalerate sprays was greatest for the alfalfa leafcutting bee, <i>Megachile rotundata</i> (Fabr.); least for the honey bee, <i>Apis mellifera</i> L., and intermediate for the alkali bee, <i>Nomia melanderi</i> Cock. Low temperatures increased the residual toxic effects of fenvalerate to honey bees. Fenvalerate at 0.22 kg Al/ha had low residual hazard to bees after one day under Pacific Northwest conditions. Field tests of fenvalerate on blooming alfalfa, pollen-shedding corn, and blooming red raspberry resulted in reduced bee visitation and low to moderate adult bee mortality.

References

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Published

2019-09-25

Issue

Vol. 84 (1987): Journal of the Entomological Society of British Columbia

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Articles

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