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
29 BC 29 29 US SWD Distribution 22+ states as of 11/1/211 211 21 211: VT, NH, CT, ME 28 198 21 21 211 21 29 21 21 SWD found in: Italy 29 Russia 29 Spain 29 France 21
211 Eastern Washington SWD trapping program (E. Beers, D. Walsh)
SWD Trap Catches: 21 v 211 35 3 21 211 Avg. SWD/trap/week 25 2 15 1 Sum SWD/Sum Samples 7 6 5 4 3 2 1-9% CY 21 CY 211 5 Jan Feb Mar Apr May Jun Jul Aug Sep Oct
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)
Contech WF cd Standard Trap Test (SCRI*SWD) Contech Heinz d Redcup c Delicup b Haviland Mod c Haviland a VanSteenwyk b 5 1 15 2 25 3 Avg. SWD/trap
211 Bait Test 2. 1.6 males females total a a SWD/trap 1.2.8 ab ab bc b a.4 a a b b a. SuperBait Contech "Zalom" Yeast Contech ACV Contech ACV Deli Cup
Scentry Lure Test 16 14 12 SWD/trap (seasonal) 1 8 6 4 2 Damascenone ACV fiber cis-pentene DEA-ethanol Raspberry Methylbutyric ACV
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
GF-12 Field Trial Adults+Pupae Emerged/5 fruit 35 3 25 2 15 1 5 Sample date 18 Jul 26 Jul 2 Aug (no infestation) GF-12 Entrust Check
Bait+Toxicant Tests 1 8 % Mortality 6 4 2 GF-12 undiluted GF-12 1:5 dilution Check % Mortality (females, 48 h) 1 8 6 4 111-16 to 111-2 Success+NuLure Success+Molasses Entrust+Molasses Entrust+KaroLight Entrust+KaroDark 2 GF-12 Toxicant+Bait Toxicant alone Bait alone Check
PyGanic Rate Test % Mortaltiy (females, 48 h) 1 8 6 4 2 a PyGanic 64 fl oz PyGanic 32 fl oz PyGanic 16 fl oz 111-12 PyGanic 1.4EC b b b Check % Mortaltiy (females, 48 h) 1 8 6 4 2 a 111-12 PyGanic 5EC [18 fl oz/acre] b b b PyGanic 2 gal PyGanic 5 gal PyGanic 1 gal Check
Entrust Rate Bioassay 1 8 111-9 Female Male % Mortaltiy 6 4 2 Entrust 3 oz Entrust 2 oz Entrust 1 oz Check 1 8 111-1 Males Females % Mortality 6 4 2 Entrust 2.25 oz Entrust 1.8 oz Entrust 1.25 oz Check
SWD Field Trial - Sunrise 5 a 4 Oviposition puncture/5 fruit 3 2 1 ab b b b b Success Delegate Entrust Warrior Endigo Check
Height in canopy influences infestation by SWD Sampled fruit 6 June from 3 heights: Low <4 ft Med 4-8 ft High 8-12 6 5 Low Mid High 4 replications Brown sugar flotation San Joaquin County, CA % Infested fruit 4 3 2 *Data by Bob Van Steenwyk, UC Berkeley, 211 1 Bing Rainier
Pre-harvest Field Trial Max label rate 27 May Single tree reps (6) Brown sugar flotation 16 14 12 Leverage=imidacloprid+beta-cyfluthrin Baythroid=beta-cyfluthrin Perm Up=Permethrin Belay=Clutch (clothianadin) *Data by Bob Van Steenwyk, UC Berkeley, 211 % Infested Fruit 1 8 6 4 2 Untreated Bexar Assail Belay Admire Pro Cyazypyr Ultor Leverage PermUp Baythroid
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 12 15 9 75 6 45 3 5 Treatments 4 Treatments 3 Treatments 2 Treatments Entrust (x2) Untreated 15 *Data by Bob Van Steenwyk, UC Berkeley, 211 7-May 17-May 27-May 6-Jun 16-Jun 26-Jun 6-Jul
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 http://extension. 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
SWD Website http://extension. wsu.edu/swd
SWD Website http://extension. wsu.edu/swd
Trapcodes
SWD Website http://extension. wsu.edu/swd
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