Green peach aphid best management practice guide - southern

Green peach aphid (Myzus persicae – GPA) has evolved resistance to a large number of insecticides globally – more than 70 active ingredients across a range of mode of action (MOA) groups. Within Australia, high levels of resistance to carbamates and pyrethroids are now widespread, as are low levels of resistance to organophosphates and neonicotinoids.

Sensitivity shifts to sulfoxaflor (for example, Transform®) have recently been found in a small number of GPA populations in Western Australia, showing the potential for low-level resistance evolution to this active ingredient.

For now, sulfoxaflor remains an effective foliar-applied chemistry for GPA control in Australia that needs to be used judiciously. Ultimately, the use of insecticides to control GPA in canola, pulses and horticulture crops places strong selection pressure on the evolution of resistance.