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1 February 2012 Imidacloprid in Melon Guttation Fluid: A Potential Mode of Exposure for Pest and Beneficial Organisms
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Abstract

ELISA techniques were used to detect imidacloprid in guttation fluid of young cantaloupe plants in Arizona. Imidacloprid was detected at up to 4.1 µg/ml (ppm) in a coincidental guttation collection 3 d after a top label rate soil application and at 37 µg/ml one d after a separate top label rate soil application study. These imidacloprid titers exceed reported median oral toxicities for several insect species by factors of 10 or more. Pesticides in guttation fluid are a relatively unexplored route of exposure for both pest and beneficial insects, and could represent an important risk for both of these groups in guttation-prone environments.

© 2012 Entomological Society of America
Eric J. Hoffmann and Steven J. Castle "Imidacloprid in Melon Guttation Fluid: A Potential Mode of Exposure for Pest and Beneficial Organisms," Journal of Economic Entomology 105(1), 67-71, (1 February 2012). https://doi.org/10.1603/EC11251
Received: 29 July 2011; Accepted: 1 August 2011; Published: 1 February 2012
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