UC IPM Online UC ANR home page UC IPM home page

UC IPM Home

Search

SKIP navigation
How to Manage Pests

Home & garden
Agriculture
Natural environments
Exotic & invasive

Weather data & products
Degree-days
Interactive tools & models

Identification Galleries

Natural enemies
Weeds

Educational Resources

Publications & more
Workshops and events
Training programs
Pesticide information

Research and IPM

Grants programs
Funded-project results

 
  Printer-friendly version

How to Manage Pests

UC Pest Management Guidelines

| More pests | More crops | About guidelines |

Prune

General Properties of Fungicides Used in Prunes

(Reviewed 6/06, updated 4/09)

In this Guideline:
Common name (trade name) Chemical class (FRAC #)1 Activity Mode of action Resistance potential Comments
azoxystrobin (Abound) strobilurin (11) contact, systemic single-site high  
bordeaux inorganic (M1) contact multi-site low  
captan phthalamide (M4) contact multi-site low highly toxic to honey bee larvae
chlorothalonil (Bravo) aromatic nitrile (M5) contact multi-site low  
cyprodinil (Vangard) anilinopyrimidine (9) mostly contact single-site high  
fenhexamid (Elevate) hydroxyanilide (17) contact single-site high  
fosetyl-al (Aliette) phosphorothiolate (33) systemic — —  
iprodione (Rovral) dicarboximide (2) systemic (local) multi-site low  
mefenoxam (Ridomil Gold) acylalanine (4) systemic single-site high  
myclobutanil (Rally) DMI 2-triazole (3) systemic (local) single-site high  
propiconazole (Break/Orbit) DMI 2-triazole (3) systemic (local) single-site high  
pyrimethanil (Scala) anilinopyrimidine (9) mostly contact single-site (9) high  
sulfur inorganic (M2) contact multi-site low highly toxic to native strains of western predatory mite (Galendromus occidentalis) and to parasites
thiophanate-methyl (Topsin) benzimidazole (1) systemic (local) single-site very high  
1 Group numbers are assigned by the Fungicide Resistance Action Committee (FRAC) according to different modes of actions (for more information, see http://www.frac.info/). 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  DMI = demethylation (sterol) inhibitor

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Prune
UC ANR Publication 3464
General Information
Acknowledgment: Adaskaveg et al., 2009. Efficacy and Timing of Fungicides, Bactericides, and Biologicals for Deciduous Tree Fruit, Nut, Strawberry, and Vine Crops. (960 KB, PDF)

Top of page

Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2009 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /PMG/r606900611.html revised: April 21, 2009. Contact webmaster.