Fungicide Use in Field Crops: Web Book

2.2: Fungicide Resistance Risk

2.2: Fungicide Resistance Risk

Table 2.1. This table is a fungicide resistance risk “heat map” showing highest risk of fungicide resistance development in red and lowest risk in green. Unknown fungicide risk is in blue. Fungicide risk is assessed by the Fungicide Resistance Action Committee (FRAC). 

FRAC Code Fungicide Group Name Resistance Risk
1 Methyl Benzimidazole Carbamates (MBC) High
4 Phenylamides
11 Quinone Outside Inhibitors (QoI)
2 Dicarboximides Medium to High
7 Succinate Dehydrogenase Inhibitors (SDHI)
21 Quinone Inside Inhibitors (QiI)
49 Oxysterol Binding Protein Homologue Inhibitor (OBPHI)
3 Demethylation Inhibitors (DMI) Medium
9 Anilino-pyrimidines (AP)
12 Phenylpyrroles (PP) Low to Medium
14 Aromatic Hydrocarbons
22 Benzamides
27 Cyanoacetamide-oximes
28 Carbamates
30 Organo Tin Compounds
40 Carboxylic Acid Amides (CAA)
29 Oxidative Phosphorylation Uncouplers Low
P 07 Phosphonates
M Multi-site Activity
32 Heteroaromatics Unknown
44 Microbial 

 

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2.2: Fungicide Resistance Risk