Resistance Management in the Green Peach Aphid: Integrated Surveillance and Strategic Response

The Green peach aphid (GPA) poses a significant and escalating threat to Australia’s canola and pulse crops, primarily as a vector for Turnip yellows virus (TuYV), which can lead to substantial yield losses. Recent GPA outbreaks in key growing regions, combined with increasing insecticide resistance and the phase-out of older chemicals, highlight the urgent need for updated and sustainable management strategies.

This investment will build on previous research to develop and implement new tools and strategies for GPA resistance management. By integrating advanced diagnostics, predictive models, and sustainable control practices, the project aims to improve decision-making for growers and advisers. The investment will also collaborate with other ongoing research efforts focused on virus transmission and pest management, ensuring that the latest innovations and findings are applied effectively.

To maximise the impact and efficiency of the investment, research activities will be integrated with ongoing R&D investments. This integration will leverage existing data, samples, and resources, ensuring that the investment is both cost-effective and comprehensive. For example:

• Predictive models for GPA movements will be enhanced by validating data from ongoing surveillance and monitoring activities to ensure their accuracy and utility for growers.

• National resistance surveillance efforts will use existing sample collections and resources to broaden geographical coverage and enhance understanding of GPA resistance patterns.

• Field trials will be designed to complement and collaborate with other studies on pest management and alternative treatment strategies, allowing shared resources and greater insights into both chemical and non-chemical control options.

Partnerships with crop protection stakeholders and industry collaborators will strengthen the financial and technical foundation, ensuring rapid adoption of developed solutions. This collaboration will broaden the project’s impact and ensure its relevance to industry needs.

Through a strong extension and communication program, the project will disseminate new research and management strategies to growers and advisers via workshops, field days, and digital platforms. This ensures that the grain industry is equipped to adapt to evolving pest and virus challenges, reducing reliance on traditional chemical controls and enhancing the sustainability of grain production.