A recent study led by the Queensland Department of Agriculture and Fisheries, supported by CRCNA, has shed light on the unique challenges of storing grain in northern Australia’s tropical climate. Researchers found high levels of insect pest infestations and resistance to phosphine fumigation, especially in key species like the red flour beetle and rusty grain beetle.

The project surveyed 80 storage sites across Queensland, the Northern Territory and Western Australia, revealing the urgent need for region-specific pest management strategies. It also tested alternative treatments, including sulfuryl fluoride and a new grain protectant mix, showing promising results.

To address ongoing risks, the research recommends integrated pest and resistance management approaches, such as improved storage hygiene, regular pest monitoring, and the adoption of gas-tight silos.

This work lays the foundation for safer, more effective grain storage across northern Australia and supports the region’s emerging broadacre cropping industries.

Read the full article here Jagadeesan et al-Australian Grai Article-March-April 2025

More information: Dr Rajeswaran Jagadeesan, raj.jagadeesan@daf.qld.gov.au

CRCNA project – Integrated management to ensure market access for northern Australia grain