Tuesday, December 12, 2006
D0360
Optimizing the use of the neonicotinoids against the sweetpotato whitefly, Bemisia tabaci Gennadius, Q-biotype in ornamental production
James A. Bethke, james.bethke@ucr.edu1, Frank J. Byrne, frank.byrne@ucr.edu1, Ron D. Oetting, roettin@griffin.uga.edu2, and Richard A. Redak, richard.redak@ucr.edu1. (1) University of California, Department of Entomology, Riverside, CA, (2) University of Georgia, Entomology, University of Georgia, CAES, Griffin, GA
The sweetpotato whitefly, Bemisia tabaci Gennadius, B biotype has been a serious pest of ornamentals since the early 1990s in the US. Management of the B biotype has been studied extensively. Recently, the Q biotype, which originates in the Mediterranean, has invaded the US, and has expressed resistance or tolerance to several neonicotinoids in Europe. Efficacy trials against the Q biotype on poinsettias in 2005 indicate that the neonicotinoids including imidacloprid can be effective against the Q-biotype. In addition, selected plant tissues from those efficacy trials were assayed for the presence of imidacloprid, and efficacious concentrations and persistence over time were determined.
Species 1: Hemiptera Aleyrodidae Bemisia tabaci (sweet potato whitefly)
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See more of The 2006 ESA Annual Meeting, December 10-13, 2006