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Understanding the dynamics of neonicotinoid activity in the management of Bemisia tabaci whiteflies on poinsettias |
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| Authors: | Frank J Byrne Ronald D Oetting James A Bethke Charles Green Joe Chamberlin |
| Institution: | 1. Department of Entomology, University of California, Riverside, CA 92521, USA;2. Department of Entomology, Georgia Station, University of Georgia, 1109 Experiment Street, Griffin, GA 30223, USA;3. UCCE San Diego, 334 Via Vera Cruz, Ste 152, San Marcos, CA 92078, USA;4. Valent U.S.A. Corporation, 2386 Clower St, Ste E100B, Snellville, GA 30078, USA;5. Valent U.S.A. Corporation, 1600 Riviera Avenue, Suite 200, Walnut Creek, CA 94596, USA |
| Abstract: | The relative efficacies of registered label rates for foliar and soil drench treatments of imidacloprid and dinotefuran at preventing the establishment of Bemisia tabaci B biotype whitefly populations on newly infested poinsettia plants were evaluated. Pesticide levels within and on plant leaves were monitored for 10 weeks by ELISA and LC/MS in an effort to better understand the dynamics of neonicotinoid activity against this insect and to estimate insecticide concentrations needed to kill the nymphal and adult stages. While all treatments proved equally effective as a remedial measure for the control of the resident adult populations, thereby accomplishing the objective of foliar contact treatments, the dinotefuran soil drench application was the only treatment that provided multi-generational control of Bemisia populations. |
| Keywords: | Bemisia tabaci Imidacloprid Dinotefuran Poinsettia |
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