Cesar Australia Cesar Australia is currently offering insecticide resistance testing of green peach aphid (Myzus persicae, GPA) to growers and advisors via a GRDC investment.
Green peach aphid is a major pest in canola and pulse production in Australia. This species’ ability to quickly evolve resistance to chemicals makes it a tough pest to manage.
It has evolved resistance to multiple insecticide groups in Australia, including carbamates, synthetic pyrethroids, organophosphates, neonicotinoids, and spirotetramat. Low-level resistance to sulfoxaflor has also been detected in some populations.
GRDC has made another 4-year investment to reduce the impact of GPA and turnip yellows virus (TuYV). Led by Cesar Australia, the project seeks to provide grain growers and advisors with improved insecticide resistance management strategies and extend the life of effective chemical control options.
As part of the project, we are continuing our grower resistance surveillance program.
Please contact us if you have encountered:
- GPA populations that have survived a chemical application.
- GPA populations with suspected chemical resistance.
- Other aphid species, such as bluegreen aphid, present where chemical control failures are suspected.
We are here to help
Email Karyn Moore (kmoore@cesaraustralia.com) describing what you have experienced or call the Cesar Australia offices on (03) 9349 4723. If we suspect you have resistance, we will ask you to send us a sample.
Once received, we will run a full test for resistance to all commonly used insecticide modes of action. We will then send you a detailed report summarising the chemical sensitivity of your GPA sample, plus recommendations for management.
When submitting samples to Cesar for analysis, please follow the guidelines listed in this form.
Managing insecticide resistance is a collective responsibility
Samples will be screened for resistance to pyrethroids, carbamates, organophosphates, spirotetramat and neonicotinoids via genetic analysis.
In some instances, samples may also be screened for resistance to sulfoxaflor and afidopyropen using bioassays. This process takes considerably longer and is not guaranteed for all submissions.
Anyone who submits samples to the project will receive a response outlining the specific resistances present in their samples, allowing them to better understand the insecticide resistances present on their property.
This service is not designed to return results in a timeframe that would allow results to inform in-season farm decisions. The primary use of the data collected is to develop national and regional insecticide resistance maps that will be freely available to industry.
Your sample won’t just help you, it will also inform the broader national resistance surveillance monitoring Cesar Australia is leading. This helps the entire industry be better prepared to handle emerging chemical resistances in this economically important pest.
Join the national effort to tackle insecticide resistance — starting with your paddock.
Acknowledgement
This service is made available to growers and advisors thanks to a GRDC investment in the project CES2501-002RTX Resistance Management in the Green Peach Aphid: Integrated Surveillance and Strategic Response.
