Knowing how fungicides work is critical for developing an effective disease management strategy and preventing resistance.
Executive Summary
Fungicides are categorized by their 'Mode of Action' (MoA)—the specific biochemical process they disrupt in the fungus. Rotating between different MoA groups is essential to prevent fungi from developing resistance to any single product.
Key Takeaways
- Differentiate between contact (protectant) and systemic (curative) fungicides.
- Check the FRAC (Fungicide Resistance Action Committee) code on your product labels.
- Always rotate products from different chemical classes throughout the season.
- Apply fungicides preventatively when weather conditions favor disease development.
Expert Advice
"Resistance management is not an option; it's a necessity. Once a fungus becomes resistant to a class of chemistry, that tool is lost to the community."
Conclusion
A smart fungicide strategy focuses on long-term sustainability. By understanding the science behind the products, you can protect your crops while preserving the effectiveness of these vital tools.