2012 - Washington Red Raspberry Commission

society’s/the environment’s best interest to prevent the development of resistance.
Development of resistance has been repeatedly shown to result in significantly increased use of
pesticides.
Description of alternative control measures and why they are not effective or additional
information on the specific need. Growers currently engage in a number of alternative
control tactics such as annually prune to remove infected twigs and to open canopy for good air
circulation; space plants for good air circulation and quick drying; adjust timing and/or frequency
of overhead irrigation to keep aboveground portions of the plant dry; avoid late-season
fertilization; and, pick fruit at correct stage of maturity and move harvested fruit to cold storage
as soon as possible. However even with these tactics, intensive fungicide use is necessary.
Funding Categories. Category C - Significance to Local or Regional Economy
II. Resistance management
IV. Registration of an additional pest control tactic
Project Description. Objective 1. Sample Botrytis infections in berry fields in western
Washington and screen for tolerance. Objective 2. Use information to revise Botrytis berry
control programs.
We propose to use local crop advisors, growers/industry representatives to collect raspberry
(June/July) and blueberry (July/August/September) Botrytis infected fruit. The samples will be
shipped to Jim Adaskavig (UC Davis) who has agreed to test the fruit for tolerance to berry
fungicides. Counties to be sampled include Clark, Lewis, Thurston, King, Skagit and Whatcom.
Other counties could be included, but the aforementioned were selected due to their large berry
acreage or knowledge of good cooperators. While blueberries and raspberries are the target of
this project, berry growers also grow strawberries which have very similar problems. It is
expected that a few strawberry samples would be collected and submitted. Our goal is to
submit 200 samples of fruit. It is easy to find infected fruit, but we hope to find Botrytis on plants
early in the season and test it for resistance. If resistance can be documented early enough,
then it may be possible to use this information for a Section 18. While this is a possibility, it is
premature to create the expectation that this will happen.
Budget
Expenditure
WSCPR
(Request)
Co-funding (CASH or IN-KIND)
Source: WBC Source:WRRC Source:WBC
Amount
Amount
Amount
(CASH)
(CASH)
(in-kind)
Salaries1
Employee Benefits
Samplers/Shipping 5,000 1,000 1,000 7,000
Travel2
Basic supplies 300 300
UC Davis 2,000 2,000 4,000
Total 5,000 3,000 3,000 300 11,300
TOTAL
COST
We plan to contract with local field reps/crop advisors to collect the fruit (including Tom Peerbolt for SW Washington, Whatcom
County Farmers Coop, etc. in Whatcom County, etc.). Schreiber will collect samples for Thurston, King and Skagit counties.\
$4,000 will be provided to U.C. Davis for the sample evaluations.
Has this budget been reviewed for accuracy Yes By Whom Stacey Hill
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