Mackay Canegrub Trials Target Future Pest Control Options

Mackay sugarcane growers are playing a key role in major new research aimed at securing effective and sustainable canegrub control, as current chemical options face potential restrictions.

Canegrubs are among the most costly pests affecting sugarcane, with moderate infestations reducing yields by 10–20 per cent and severe outbreaks cutting production by more than 40 per cent — the equivalent of around 30 tonnes of cane per hectare. Across the industry, unchecked canegrub damage is estimated to cost up to $60 million annually.

Neonicotinoid insecticides are currently the primary control option. However, these products are under review by the Australian Pesticides and Veterinary Medicines Authority, with strong indications their use could be restricted or phased out by 2028–29.

In response, Sugar Research Australia (SRA) is leading a major project to identify alternative insecticides. Following laboratory screening of 23 products, up to 10 promising options have progressed to large-scale field trials, including sites in Mackay.

Chemical applications were completed in November across 12 trial sites statewide, with treatments applied to both plant cane and first ratoon crops. Throughout 2026, the Mackay trials will be closely monitored to assess effectiveness, yield protection, soil persistence, and water mobility, ensuring any future recommendations meet environmental standards. Preliminary field results are expected by the end of the year, with full datasets ready by 2028.

The research is expected to deliver new tools that protect Mackay cane yields, reduce long-term costs, and support sustainable farming into the next decade.

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The research project ‘Beyond imidacloprid’ now has many sites treated across Queensland. Photo source: SRA

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