Sublethal effects of spirodiclofen on Tetranychus urticae Koch pre-ovipositional females after different exposure times
2006
Marcic, D.(Institute of Pesticides and Environmental Protection, Belgrade (Serbia)) | Ogurlic, I.(Institute of Pesticides and Environmental Protection, Belgrade (Serbia))
Sublethal effect of spirodiclofen on Tetranychus urticae females that survived different exposure times in the pre-ovipositional period was evaluated calculating two parameters - instantaneous rate of increase and net fertility - after six days of reproduction. The females were exposed to four concentration/doses of the acaricide. The effect of all tested concentrations of spirodiclofen on both parameters increased with exposure time. The lowest values of instantaneous rate of increase (0.268) and net fertility (2.58) were recorded after 24h exposure to 96 mg/L. The results regarding Tetranychus urticae population management are discussed.
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