| Common name (Example trade name) |
Chemical class | Activity | Mode of action (FRAC number)1 |
Resistance | Comments |
|---|---|---|---|---|---|
| acibenzolar-S-methyl (Actigard) | BTH2 | systemic | — (P1) | low | — |
| azoxystrobin (Quadris) | QoI3 | contact, systemic4 | single-site (11) | high | — |
| boscalid (Endura) | SDHI5 | contact, systemic4 | single-site (7) | medium to high | — |
| copper | inorganic | contact | multi-site (M1) | low | — |
| cyprodinil/fludioxonil (Switch) | AP/PP6 | — | multi-site (9/12) | low | — |
| dicloran (Botran) | AH7 | locally systemic | single-site (14) | high | — |
| dimethomorph (Forum) | CAA8 | locally systemic | single-site (40) | low to medium | — |
| famoxadone/cymoxanil (Tanos) | QoI3/cyanoacetamide-oximes | —/systemic | multi-site (11/27) | low | — |
| fenamidone (Reason) | QoI3 | systemic4 | single-site (11) | high | — |
| fludioxonil (Cannonball) | phenylpyrrole | contact | few to multi-site (12) | medium | — |
| fluopicolide (Presidio) | benzamide | locally systemic | single-site (43) | low | — |
| fosetyl-Al (Aliette) | phosphonate | systemic | multi-site (33) | low | — |
| iprodione (Rovral) | dicarboximide | locally systemic | multi-site (2) | medium to high | toxic to honey bee larvae; do not apply during bloom. |
| mancozeb (Mancozeb 75WDG) | dithiocarbamate | contact | multi-site (M3) | low | |
| mandipropamid (Revus) | CAA8 | systemic | single-site (40) | low to medium | — |
| mefenoxam (Ridomil Gold) | phenylamide | systemic | single-site (4) | high | — |
| myclobutanil (Rally) | triazole | systemic | single-site (3) | medium | |
| penthiopyrad (Fontelis) | SDHI5 | contact, systemic | single-site (7) | medium to high | |
| phosphorus acid (Fosphite) | phosphonate | systemic | multi-site (33) | low | — |
| quinoxyfen (Quintec) | quinoline | single-site (13) | medium | ||
| sulfur (Microthiol Disperss) | inorganic | contact | multi-site (M2) | low | toxic to predatory mites and parasites. |
| 1 | Group numbers are assigned by the Fungicide Resistance Action Committee (FRAC) according to different modes of actions. Fungicides with a different group number are suitable to alternate in a resistance management program. For fungicides with mode-of-action group numbers 1, 4, 9, 11, or 17, make no more than one application 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 | BTH = benzo-thiadiazole |
| 3 | QoI = quinone outside inhibitor (strobilurin) |
| 4 | Generally considered to have systemic action based on performance data but has not been proven experimentally. |
| 5 | SDHI = succinate-dehydrogenase inhibitor |
| 6 | AP/PP = anilinopyrimidine/phenylpyrrole |
| 7 | AH = aromatic hydrocarbon |
| 8 | CAA = carboxylic acid amide |
| — | No information |
Acknowledgment: This information was adapted from the Fungicide Resistance Action Committee website.