Introduction
The Australian Pesticides and Veterinary Medicines Authority (APVMA) has announced that by mid‑2026, many uses of the insecticide fenitrothion will be cancelled. It will remain available for use in stored grain but with tighter restrictions. (Grain Central)
What This Means for Farmers
Fenitrothion has long been used for controlling pests in stored grain, particularly against beetles and weevils. With restrictions tightening, farmers will need to rely more heavily on integrated pest management practices and sealed silos.
Alternatives to Fenitrothion
- Gas‑tight silos with phosphine fumigation remain the gold standard for pest eradication.
- Integrated pest management (IPM): hygiene, aeration, and monitoring reduce reliance on chemicals.
- New protectants: researchers are exploring alternatives with lower toxicity and reduced resistance risks.
Risks of Over‑Reliance on Chemicals
Insects are becoming increasingly resistant to phosphine and other treatments. Over‑reliance on chemicals without proper rotation or hygiene could worsen the problem. Farmers must combine strategies to protect their grain effectively.
Best Practice for Pest Management
- Clean silos thoroughly between harvests to remove old grain and residues.
- Regularly monitor grain for live insects and damage.
- Rotate treatments to avoid chemical resistance.
- Use aeration fans to cool grain, slowing insect development.
Preparing for 2026
With restrictions looming, farmers should start transitioning now:
- Audit pest management strategies.
- Upgrade silo sealing.
- Train staff in IPM approaches.
Conclusion
Restrictions on fenitrothion are manageable if farmers prepare early. Investing in sealed silos and adopting integrated pest management will ensure grain remains marketable and pest‑free.