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released aphid

Catalogue: GRDC Final Reports
No aphids were collected with MACE resistance to carbamate insecticides, including pirimicarb # - the insecticide widely recommended for GPA control in Australia... There was also no evidence of imidacloprid # resistance in Australian GPA. Border treatments were effective in reducing aphid immigration and virus transmission into canola paddocks from nearby sources, but further study is necessary to determine the effects on aphids arriving from longer distances... The results indicate that an 18 m buffer of Gaucho-treated plants has a significant effect on the immigration of aphids and the introduction of virus into canola paddocks when the aphids are arriving from adjacent areas...
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Catalogue: GRDC Final Reports
All aphids were moderately to highly resistant to organophosphate (OP) insecticides, while approximately half of aphids tested were at least partially resistant to pyrethroids... Preliminary data has shown that a 20 metre (m) border spray on the crop edge is sufficient to prevent most aphids released adjacent to a wheat crop from successfully colonising the crop... The 2001 and 2002 populations have been evaluated for insecticide resistance against two insecticides: dimethoate # (OP) and alpha-cypermethrin # (SP)...
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