Farm Table says:
The take home messages from this GRDC funded research are below. Please access the full paper via the link below for methodology, references, acknowledgements and discussion.
Take home messages from the paper include:
- A high number of green peach aphid populations are resistant to pyrethroids, carbamates, organophosphates, and neonicotinoids.
- Multiple green peach aphid populations from a specific region showed a temporary sensitivity shift to sulfoximines (sulfoxaflor, Transform®) due to an unknown mechanism.
- Significant differences in pyrethroid sensitivity were found between populations of oat aphid.
- The green peach aphid insecticide resistance management strategy has been updated and should be consulted by growers and advisers.
- Rotate available insecticide modes of action (new modes of action to be registered in coming years).
- Controlling green bridges around paddock and sowing into standing stubble is recommended.
- Proper identification of aphid species is necessary to assess risk of resistance and choice of insecticide to be used.
- Monitoring of aphid predators and parasitoids allows chemical-free control of insecticide resistant aphids.