1. UC IPM
  2. Agriculture
  3. Tomato
  4. General Properties of Fungicides Used in Tomatoes
Agriculture: Tomato Pest Management Guidelines

General Properties of Fungicides Used in Tomatoes

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
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