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Aphid resistance to insecticides widespread in Australia

Australian researchers have identified widespread resistance in green peach aphids (GPA - Myzus persicae) to the carbamate insecticide, pirimicarb, and to pyrethroid and organophosphate insecticides. An investigation by the company, Cesar (Melbourne, Victoria), over the past 12 months found that 11 out of 27 aphid populations tested in eastern Australia were resistant to pirimicarb and 13 were resistant to pyrethroids. Organophosphate resistance, which has been observed for many years, was also identified in Victoria, South Australia, New South Wales and Queensland.

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