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Pierce's Disease
Research Updates

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What is Pierce's Disease?

Pierce's Disease is a bacterial infection, which is spread by bugs that feed on grapevines, particularly the "glassy winged sharpshooter." Grapevines that become infected with PD can quickly become sick and die.

glassy-winged sharpshooter

CHARACTERIZATION OF PLANT METABOLITES OF IMIDACLOPRID IN CITRUS TREES AND GRAPEVINES, AND EVALUATION OF THEIR EFFICACY AGAINST THE GLASSY-WINGED SHARPSHOOTER, HOMALODISCA COAGULATA

  • Author(s): Byrne, Frank; Toscano, Nick;
  • Abstract: The toxicities of important plant metabolites of the neonicotinoid insecticide imidacloprid were assessed against the glassy-winged sharpshooter in topical application bioassays. The olefin and 5-hydroxy metabolites were only slightly less toxic than the parent material, whereas the diol and desnitro derivatives exhibited no toxicity. The formation of active imidacloprid metabolites within plants could potentially extend the protective period of imidacloprid applications if the metabolites are formed at the insect feeding sites.
  • Publication Date: Aug 2003
  • Journal: 2003 Pierce's Disease Research Symposium

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