Spotted Wing Drosophila Update

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1 Spotted Wing Drosophila Update Washington State Horticultural Assoc. Wenatchee Convention Center, Wenatchee, WA 7 December 211 1:-1:2 am Elizabeth H. Beers WSU Tree Fruit Research & Extension Center 11 N. Western Ave. Wenatchee, Washington

2 29 BC US SWD Distribution 22+ states as of 11/1/ : VT, NH, CT, ME SWD found in: Italy 29 Russia 29 Spain 29 France 21

3 211 Eastern Washington SWD trapping program (E. Beers, D. Walsh)

4 SWD Trap Catches: 21 v Avg. SWD/trap/week Sum SWD/Sum Samples % CY 21 CY Jan Feb Mar Apr May Jun Jul Aug Sep Oct

5 SWD Standard Trap Test Haviland trap mesh top, cover Modified Haviland trap (1 holes in sides, no cover) Van Steenwyk trap, 1 qt ice cream, mesh top, cover Deli cup (1 qt, 1 holes in sides) Red cup (1 qt, 1 holes in sides) Contech (2 holes in sides)

6 Contech WF cd Standard Trap Test (SCRI*SWD) Contech Heinz d Redcup c Delicup b Haviland Mod c Haviland a VanSteenwyk b Avg. SWD/trap

7 211 Bait Test males females total a a SWD/trap ab ab bc b a.4 a a b b a. SuperBait Contech "Zalom" Yeast Contech ACV Contech ACV Deli Cup

8 Scentry Lure Test SWD/trap (seasonal) Damascenone ACV fiber cis-pentene DEA-ethanol Raspberry Methylbutyric ACV

9 Which trap caught first? A B C D E F VanSteenwyk X X Haviland X X X X Haviland Mod Delicup X Redcup Contech Heinz X Contech WF A B C D E F G H Contech/Super X X X Contech/Yeast X X Contech/ACV X X X Deli/ACV X X X X X X

10 GF-12 Field Trial Adults+Pupae Emerged/5 fruit Sample date 18 Jul 26 Jul 2 Aug (no infestation) GF-12 Entrust Check

11 Bait+Toxicant Tests 1 8 % Mortality GF-12 undiluted GF-12 1:5 dilution Check % Mortality (females, 48 h) to Success+NuLure Success+Molasses Entrust+Molasses Entrust+KaroLight Entrust+KaroDark 2 GF-12 Toxicant+Bait Toxicant alone Bait alone Check

12 PyGanic Rate Test % Mortaltiy (females, 48 h) a PyGanic 64 fl oz PyGanic 32 fl oz PyGanic 16 fl oz PyGanic 1.4EC b b b Check % Mortaltiy (females, 48 h) a PyGanic 5EC [18 fl oz/acre] b b b PyGanic 2 gal PyGanic 5 gal PyGanic 1 gal Check

13 Entrust Rate Bioassay Female Male % Mortaltiy Entrust 3 oz Entrust 2 oz Entrust 1 oz Check Males Females % Mortality Entrust 2.25 oz Entrust 1.8 oz Entrust 1.25 oz Check

14 SWD Field Trial - Sunrise 5 a 4 Oviposition puncture/5 fruit ab b b b b Success Delegate Entrust Warrior Endigo Check

15 Height in canopy influences infestation by SWD Sampled fruit 6 June from 3 heights: Low <4 ft Med 4-8 ft High Low Mid High 4 replications Brown sugar flotation San Joaquin County, CA % Infested fruit *Data by Bob Van Steenwyk, UC Berkeley, Bing Rainier

16 Pre-harvest Field Trial Max label rate 27 May Single tree reps (6) Brown sugar flotation Leverage=imidacloprid+beta-cyfluthrin Baythroid=beta-cyfluthrin Perm Up=Permethrin Belay=Clutch (clothianadin) *Data by Bob Van Steenwyk, UC Berkeley, 211 % Infested Fruit Untreated Bexar Assail Belay Admire Pro Cyazypyr Ultor Leverage PermUp Baythroid

17 SWD Timing Experiment Bing orchard, Santa Clara Co., CA 6 trts x 3 reps Up to 5 applications 4 weeks to 3 DBH All treatments better than check 4 or 5 treatments no better than 3 treatments Larvae per 1 Fruit Treatments 4 Treatments 3 Treatments 2 Treatments Entrust (x2) Untreated 15 *Data by Bob Van Steenwyk, UC Berkeley, May 17-May 27-May 6-Jun 16-Jun 26-Jun 6-Jul

18 Growing District Traps Deployed First fly captured? Oroville/Tonasket Yes 29-Aug Okanogan/Omak Yes 29-Aug Brewster/Pateros Yes 15-Jul Chelan/Manson Yes 16-Aug Orondo-Beebe Bridge Yes 12-Jul Entiat Yes 6-Sep Wenatchee/E. Wenatchee/ Wenatchee River Valley Yes 23-Aug Stemilt Hill/Wenatchee Heights Yes 26-Aug Rock Island/Malaga Yes 2-Aug SWD Website wsu.edu/swd Quincy/Moses Lake Yes 16-Aug Royal City Yes 23-Aug Othello Yes 16-Aug Mattawa/Desert Aire Yes 2-Aug Yakima/Tieton Yes 15-Aug Union Gap/Zillah Yes 5-Sep Sunnyside/Prosser Yes 2-Jun Tri-Cities Yes 8-Jun

19 SWD Website wsu.edu/swd

20 SWD Website wsu.edu/swd

21 Trapcodes

22 SWD Website wsu.edu/swd

23

24 What s coming in 212? Populations more like 21 or 211? More confidence in control options Still some questions on efficacy, interpretation of traps Still on learning curve

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