Imidacloprid in melon guttation fluid: a potential mode of exposure for pest and beneficial organisms.

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Hoffmann EJ, Castle SJ

Imidacloprid in melon guttation fluid: a potential mode of exposure for pest and beneficial organisms.

J Econ Entomol. 2012 Feb;105(1):67-71.

PubMed ID
22420257 [ View in PubMed
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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 microg/ml (ppm) in a coincidental guttation collection 3 d after a top label rate soil application and at 37 microg/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.

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