In Australia, the green peach aphid (GPA), Myzus persicae, primarily attacks canola and pulse crops, as well as being a common pest in horticulture. This fact sheet outlines the resistance management strategy for GPA.
- Green peach aphids (GPA) are a widespread and damaging pest of canola and a range of pulse crops, causing damage by feeding and transmitting viruses.
- Five chemical subgroups are registered to control GPA in grain crops: carbamates (Group 1A); synthetic pyrethroids (Group 3A); organophosphates (Group 1B); neonicotinoids (Group 4A); and sulfoxaflor (Group 4C). Paraffinic spray oils are also registered for suppression of GPA.
- High levels of resistance to carbamates and pyrethroids are now widespread across Australia. Moderate levels of resistance to organophosphates have been observed in many populations, and there is evidence that resistance to neonicotinoids is evolving.
- A strategy to manage insecticide resistance in GPA populations is available for use by grain growers and their advisers.
- The strategy may vary across regions and industries to be effective.
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