Agriculture: Caneberries Pest Management Guidelines

General Properties of Fungicides Used in Caneberries

Common name
(Example trade name)
Chemical class
(FRAC # )1
Activity Mode of action Resistance potential
copper sulfate inorganic ( M1) contact multi-site low
cyprodinil + fludioxonil (Switch) Anilinopyrimidine + phenylpyrrole (9 + 12) mostly contact single-site + multi-site high/low
chloropicrin (Pic-clor 60) soil fumigant mostly contact multi-site (FRAC numbers not applicable) low
fenhexamid (Elevate) hydroxyanilide (17) contact single-site high
fosetyl-al (Aliette) phosphorothiolate (33) systemic
iprodione (Rovral) dicarboximide (2) systemic (local) multi-site low
lime sulfur inorganic ( M1) contact multi-site low
mefenoxam (Ridomil Gold) acylalanine (4) systemic single-site high
myclobutanil (Rally) DMI2-triazole (3) systemic (local) single-site high
potassium bicarbonate (Kaligreen) inorganic contact
pyraclostrobin (Cabrio) strobilurin (11) contact & systemic single-site high
pyraclostrobin + boscalid (Pristine) strobilurin (11 + 7) contact & systemic single-site + multi-site medium
sulfur inorganic ( M2) contact multi-site low
— = no information
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. 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 a fungicide with a different mode of action Group number.
2 DMI= demethylation (sterol) inhibitor

Acknowledgment: Adaskaveg et al., 2013. Efficacy and Timing of Fungicides, Bactericides, and Biologicals for Deciduous Tree Fruit, Nut, Strawberry, and Vine Crops. (PDF)

Text Updated: 06/15