Susceptibility of female populations of Panonychus ulmi (Koch) (Acari : Tetranychidae) to some acaricides in apple orchards
No Thumbnail Available
Date
2007-01-24
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Abstract
The levels of susceptibility of adult female European red mite, Panonychus ulmi (Koch) populations collected from apple orchards in Bursa region of Turkey, to acaricides, dicofol, bromopropylate and fenpyroximate belong to two different groups and an acaricide-insecticide, amitraz, were determined by a petri leaf disk-Potter spray tower method. When compared with the susceptible population, resistance ratios, as indicated by LC50 values, ranged from 2.2 to 11.9, 0.8 to 3.6, 1.0 to 22.5 and 0.9 to 7.9, while LC90 values varied from 1.6 to 9.8, 1.0 to 5.4, 1.0 to 47.4, 1.4 to 36.6, respectively, for amitraz, dicofol, bromopropylate and fenpyroximate. An examination of bioassay responses showed that susceptibility was lower for fenpyroximate and bromopropylate than for the other two compounds in the order of amitraz < dicofol. In conclusion, P. ulmi susceptibility to tested compounds varied widely from location to location.
Description
Keywords
Acari, Bioassay, Amitraz, Malus x domestica, Panonychus ulmi, Tetranychidae, Crop pest, Insecticide, Mite, Orchard, Pest resistance, Bromopropylate, Dicofol, Fenpyroximate, Panonychus ulmi, European red mite, Cross-resistance, Dicofol resistance, Urticae acari, Fenpyroxımate resistance, Stability, Inheritance, Strains
Citation
Kumral, N. A. ve Kovancı, B. (2007). "Susceptibility of female populations of Panonychus ulmi (Koch) (Acari : Tetranychidae) to some acaricides in apple orchards". Journal of Pest Science, 80(3), 131-137.