| Common name (example trade name) | Chemical class (FRAC No.)1 | Activity | Mode of action | Resistance potential |
|---|---|---|---|---|
| azoxystrobin (Quadris) | QoI2 (11) | contact, systemic (local) | single-site | high |
| azoxystrobin + difenoconazole (Quadris Top) |
Qol2 + DMI3-triazole (11 + 3) | contact, systemic (local) | single-site + single site | low |
| Bacillus pumilus (Sonata) | biological (—) | contact | multi-site | low |
| Bacillus subtilis (Serenade) | biological (—) | contact | multi-site | low |
| chlorothalonil (Bravo) | chloronitrile (M5) | contact | multi-site | low |
| copper | inorganic (M1) | contact | multi-site | low |
| cyflufenamid (Torino) | unknown (U6) | contact | — | high |
| dimethomorph (Zampro) | cinnamic acid (40) | systemic | — | medium |
| famoxadone + cymoxanil (Tanos) | QoI2 + cyanoacetamide-oximes (11 + 27) | systemic | single-site + single-site | low |
| fluopyram/ trifloxystrobin (Luna Sensation) | SDHI4 + QoI2 (7 + 11) | systemic | single-site + single-site | medium |
| flutriafol (Rhyme) | DMI3-triazole (3) | systemic | single-site | high |
| fluxapyroxad + pyraclostrobin (Priaxor) | SDHI4 + QoI2 (7 + 11) | systemic | single-site + single-site | medium |
| mancozeb (Dithane) | dithiocarbamate (M3) | contact | multi-site | low |
| mefenoxam (Ridomil Gold) | phenylamide (4) | systemic | single-site | high |
| mefentrifluconazole (Cevya) | DMI3-triazole (3) | systemic (local) | single-site | high |
| myclobutanil (Rally) | DMI3-triazole (3) | systemic (local) | single-site | high |
| penthiopyrad (Fontelis) | SDHI4 (7) | systemic (local) | single-site | high |
| pydiflumetofen/ fludioxonil (Miravis prime) | SDHI4 (7)+ Phenylpyrrole (12) | systemic, contact | single-site + single-site | medium |
| pyraclostrobin (Cabrio) | QoI2 (11) | systemic | single-site | medium |
| pyriofenone (Prolivo 300SC) | aryl-phenyl-ketones (50) | systemic (local) | single-site | high |
| sulfur | inorganic (M2) | contact | multi-site | low |
| tetraconazole (Mettle 125 ME) | DMI3-triazole (3) | systemic (local) | single-site | high |
| trifloxystrobin (Flint) | QoI2 (11) | contact and systemic (local) | single-site | high |
| 1 | Group numbers are assigned by the Fungicide Resistance Action Committee (FRAC) according to different modes of action. Fungicides with a different group number are suitable to alternate in a resistance management program. In California, make no more than one application of fungicides with mode-of-action group numbers 1, 4, 9, 11, or 17 before rotating to a fungicide with a different mode-of-action group number; for fungicides with other Group numbers, make no more than two consecutive applications before rotating to fungicide with a different mode-of-action group number. |
| 2 | QoI = quinone outside inhibitor (strobilurin) |
| 3 | DMI = demethylation (sterol) inhibitor |
| 4 | SDHI = succinate dehydrogenase inhibitor |
| — | no information |
Text Updated: 09/23