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- Riedl, H., et al. Show all 3 Authors
- Journal of economic entomology 1998 v.91 no.2 pp. 352-360
- orchards; Panonychus ulmi; Pyrus communis; abamectin; fenbutatin oxide; hexythiazox; acaricide resistance; Tetranychus mcdanieli; mite control; Malus domestica; toxicity; Tetranychus urticae; resistance management; Oregon
- ... Tetranychid mite populations from pome fruit orchards in Washington and Oregon were surveyed in 1994-1995 for resistance status to 3 acaricides, abamectin, fenbutatin oxide, and hexythiazox. Lethal concentrations (LC) and lethal concentration ratios (LCR) were calculated from probit dose-response bioassays for various populations and compared with data from the same type of bioassay performed in 1 ...