Project Summaries

11-840AR  Project Manager: P. F. O'Leary

DETERMINING RELATIVE RAINFASTNESS OF INSECTICIDES USED FOR CONTROL OF TARNISHED PLANT BUG IN COTTON

Gus M. Lorenz, University of Arkansas

Studies were conducted in both the greenhouse and field to evaluate the rainfastness of five insecticides: Centric (thiamethoxam), Acephate, Bidrin (dicrotophos), Diamond (novaluron) (2011), and Transform (sulfoxaflor) (2012), currently recommended for control of tarnished plant bug (Lygus lineolaris) in Arkansas and the Midsouth. Both studies simulated one inch of rainfall at 0, 1, 3, 6, 12, and 24 hrs after application, as well as no rain for comparison. Mortality was checked at 24hrs (greenhouse) and 48hrs (greenhouse and field) after infestation. Greenhouse results indicated that all treatments experienced reduced mortality when rain occurred prior to 12 hrs after application. Field studies indicated that all treatments experienced reduced mortality compared to no rain at all rain event timings from 0 to 24 hrs after application with the exception of Bidrin having no loss of control compared to no rain at 12 hrs after application.

 

Project Year: 2012
 

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