26 February 2025, New Delhi: Fungicide resistance is a growing issue that threatens the effectiveness of crop protection strategies across the globe. By focusing on key fungicide groups like phenylamides, DHODH inhibitors, and carboxylic acids, it becomes clear that resistance management is critical for sustaining long-term efficacy. This article explains the importance of resistance management and provides an overview of various fungicide classes and their target sites.
Phenylamide fungicides, which target RNA polymerase I, are highly effective but face increasing resistance, especially in Oomycetes pathogens. DHODH inhibitors, while essential for controlling fungal diseases, also face medium-to-high resistance risks. Carboxylic acid fungicides, crucial for managing bacterial and fungal diseases, require careful application to prevent resistance development.
Effective resistance management involves rotating fungicide groups, using fungicides with complementary modes of action, and incorporating integrated pest management practices. By following these guidelines, farmers can help preserve the effectiveness of fungicides and protect their crops from disease threats.
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