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How to Manage Pests

UC Pest Management Guidelines

| More pests | More crops | About guidelines |

Kiwifruit

2009 Fungicide Efficacy and Treatment Timing

(Reviewed 3/09, updated 3/09)

In this Guideline:

FUNGICIDE EFFICACY FOR KIWIFRUIT DISEASES

Fungicide Resistance risk (FRAC#)1 Botrytis Fruit Rot
Vangard2 high (9)3 +++
Elevate2/Judge4 high (17)3 +++
Scholar4 high (12) +++
Rating: ++++ = excellent and consistent,  +++ = good and reliable,  ++ = moderate and variable, + = limited and/or erratic, +/- = minimal and often ineffective, ---- = ineffective; and NR = not recommended.
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 Vangard registration is pending for the 2008 fall season. Elevate is in the IR-4 program.
3 To reduce the risk of resistance development start treatments with a fungicide with a multi-site mode of action; rotate or mix fungicides with different mode of action FRAC numbers for subsequent applications, use labeled rates (preferably the upper range), and limit the total number of applications/season.
4 Judge and Scholar are for postharvest use only.

FUNGICIDE TREATMENT TIMING IN KIWIFUIT

Note: Not all indicated timings may be necessary for disease control.
Disease Bud break Full bloom Preharvest Interval 1 Postharvest
14 day 7 day 1 day
Botrytis Fruit Rot ---- ++ 2 ++ +++ ++++ ++++
Rating: ++++ = most effective, +++ = highly effective, ++ = moderately effective, + = least effective, ---- = ineffective
1 Apply as needed. A predictive model BOTMON is available using ONFIT methods for disease detection.
2 Apply only if rain is forcasted.

Adaskaveg, J. E., B. A. Holtz, T. J. Michailides, and W. D. Gubler. 2009. Efficacy and Timing of Fungicides, Bactericides, and Biologicals for Deciduous Tree Fruit, Nut, Strawberry, and Vine Crops (960 KB, PDF)

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Kiwifruit
UC ANR Publication 3449
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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/r430902111.html revised: March 18, 2009. Contact webmaster.