Field and laboratory experiments on the response and development of resistance to pesticides and population density ofTetranychus cinnabarinus in ISRAEL |
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| Authors: | F Mansour |
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| Institution: | 1. Dept. of Entomology, ARO, Newe Ya’ar Regional Experiment Station, 31999, Haifa, P. O., Israel
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| Abstract: | Dosage mortality data for 12 pesticides were determined with females of an insecticide-susceptible strain of the carmine spider
mite,Tetranychus cinnabarinus (Boisd.), by the slide dip method; for four of the pesticides which are specific acaricides, also the Munger cell method
was used. The LC50s ranged from 0.00078% to 0.041%, with the synthetic pyrethroids being more toxic than the specific acaricides. There were
no differences in results between the two assay methods.
Four synthetic pyrethroids that were very active againstT. cinnabarinus in laboratory tests were examined in an unsprayed apple orchard for their effect on the population density of spider mites.
An upsurge of tetranychid mites was noted 4 weeks after a single application |
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| Keywords: | Dosage mortality data slide dip method Munger cell method Tetranychus cinnabarinus Tetranychus urticae specific acaricides synthetic pyrethroids organophosphorus pesticide |
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