Trials on Western Flower Thrips Presented by Daniel Gilrein, Extension Entomologist Cornell Cooperative Extension of Suffolk County Long Island Horticultural Research and Extension Center Riverhead, NY
Thrips Injury and Tospovirus
WFT Control on Marigold with Foliar Sprays D. R. Smitley & T. W. Davis, MSU 27 Product AI Rate/1 gal NAI 232 15EC tolfenpyrad 21 oz NAI 232 15EC tolfenpyrad 14 oz BAS 35i 9.1% Fipronil 1.2 oz Tick-Ex EC M. anisopliae 29 oz Tick-Ex EC M. anisopliae 15 oz BYI 833 24SC spirotetramat 1.7 oz BYI 833 24SC spirotetramat 1.7 oz/1 pots* Mesurol 75W methiocarb.5 lb Conserve 1SC spinosad 6 oz Safari 2SG dinotefuran 8 oz DPX-E2Y45 18.4% rynaxypyr/chlorantraniliprole 2 oz *drench
Control of WFT on Marigold Foliage D. R. Smitley and T. W. Davis, MSU 3 Tick-Ex thrips/5 lvs 25 2 15 1 BAS35i Mesurol Tick-Ex 29oz TickEx 15oz Conserve 5 6/26 7/3 7/1 27: Smitley & Davis, MSU Sprays 6/27, 7/5 & 7/13/7; Tick-Ex also 7/23/7 1 reps/trt; 5 lvs/plant 7/17 7/24 7/31 8/7
Control of WFT on Marigold Foliage D. R. Smitley and T. W. Davis, MSU thrips/5 lvs 2 18 16 14 12 1 8 6 4 2 Conserve Tolfen 21oz Tolfen 14oz Safari E2Y45 Conserve 6/26 7/3 7/1 7/17 7/24 7/31 8/7 27: Smitley & Davis, MSU Sprays 6/27 & 7/13/75; Conserve also 7/5/7 1 reps/trt; 5 lvs/plant
Control of WFT on Marigold Foliage thrips/5 lvs 2 18 16 14 12 1 8 6 4 2 Drench BYI 833 BYI 833 drch Conserve 6/26 7/3 7/1 7/17 7/24 7/31 8/7 27: Smitley & Davis, MSU Sprays 6/27, 7/5 & 7/13/7; drench 6/27/7 1 reps/trt; 5 lvs/plant
Conclusions BAS 35i, tolfenpyrad both rates most effective, v. good to excellent control Mesurol still effective, Conserve somewhat BYI 833 spray perhaps some control but not much. Drench not effective at tested rate, timing Safari good to suppressive with 2 apps @ 3 wk E2Y45, Tick-Ex not highly effective as tested
Control of WFT on Cut Gerbera with Sprays #1 % mortality 1 9 8 7 6 5 4 3 2 1 c QRD4 1.3 * c QRD4.75 bc SP31 21 b SP31 32 a Conserve 6 c 27: R. Cloyd, Manhattan, KS 3-35 WFT/flower, adults:nymphs 9:1 5 reps; trt 5/12/7, eval. 5/19/7 *some marginal burn to petals
% mortality Control of WFT on Cut Gerbera 1 9 8 7 6 5 4 3 2 1 day 6 day 9 c bc BYI833 2 with Sprays #2 c b BYI833 4 ab a b Pylon 5 Pylon 1 Conserve 6 a a a d c 27: R. Cloyd, Manhattan, KS 15-2 WFT/flower, adults:nymphs 9:1 5 reps; trt 6/5/7, eval. 6/11 and 6/14?/7
1 9 8 7 6 5 4 3 2 1 Control of WFT on Cut Gerbera b with Sprays #3 % mortality Safari 8 S162.6 S162 1.2 S162 2.4 Overture+Cap6 Conserve 6 Overture.6 Capsil6 MetaEC 15 MetaEC 29 H2O 27: R. Cloyd, Manhattan, KS 1-15 WFT/flower, adults:nymphs 9:1 a a a a cde cd def def 5 reps; trt 7/3/7, eval. 7/1/7 * bc * Wilting or petal tip necrosis * ef f
Control of WFT on Portulaca with Spray and Drench Treatments Scott Ludwig, TX Cooperative Extension BYI-833 Celero 16WSG Celero 16WSG Conserve DPX-E2Y45 Flagship 25WG Flagship25WG Overture 35WP Overture 35WP Pylon 2SC Pylon 2SC S1812 35 WP S1812 35 WP Tolfenpyrad Tolfenpyrad TriStar + Capsil 1.7 fl oz 2 oz (Drench) 4 oz (Drench) 11 fl oz 2 fl oz 4 oz (Drench) 4 oz (Foliar) 8 oz 12 oz 5 fl oz 1 fl oz 8 oz 12 oz 14 fl oz 21 fl oz 3.4 oz + 11 fl oz
Control of WFT on Portulaca with Spray and Drench Treatments Scott Ludwig, TX Cooperative Extension 2 18 16 14 12 1 8 6 4 2 7 14 21 28 BYI833 Celero 2 D Celero 4 D Conserve 11 DPX-E2Y45 Flagship 4 D Flagship 4 F Overture 8 Overture 12 Pylon 5 Pylon 1 S1812 8 S1812 12 Tolfenpyrad 14 Tolfenpyrad 21
Control of WFT on Portulaca with Spray and Drench Treatments Scott Ludwig, TX Cooperative Extension 2 18 16 14 12 1 8 6 4 2 7 14 21 28 BYI833 Celero 2 D Celero 4 D Conserve 11 DPX-E2Y45 Flagship 4 D Flagship 4 F Overture 8 Overture 12 Pylon 5 Pylon 1 S1812 8 S1812 12 Tolfenpyrad 14 Tolfenpyrad 21
Control of WFT on Portulaca with Spray Treatments Scott Ludwig, TX Cooperative Extension 14 12 1 8 6 4 Conserve 11 Overture 8 Overture 12 Pylon 5 Pylon 1 S1812 8 S1812 12 Tolfenpyrad 14 Tolfenpyrad 21 2 7 14 21 28 DAT
Control of WFT on Portulaca with Spray and Drench Treatments Scott Ludwig, TX Cooperative Extension 14 * 12 1 8 Conserve 11 Overture 8 Overture 12 6 4 2 7 14 21 28 27: S. Ludwig, Overton, TX Sprays 6/11 & 6/25/7 6 plants (1 basket)/trt; 5 DAT *7 DAT: Overtures signif. dif from
Control of WFT on Portulaca with Spray and Drench Treatments Scott Ludwig, TX Cooperative Extension 14 * 12 1 8 6 4 Conserve 11 Pylon 5 Pylon 1 * 2 7 14 21 28 27: S. Ludwig, Overton, TX Sprays 6/11 & 6/25/7 6 plants (1 basket)/trt; 5 DAT *7 DAT: Pylons signif. dif from others 21 DAT: Pylon 5 signif. dif from Conserve &
Control of WFT on Portulaca with Spray and Drench Treatments Scott Ludwig, TX Cooperative Extension 14 * 12 1 8 Conserve 11 S1812 8 S1812 12 6 4 2 7 14 21 28 27: S. Ludwig, Overton, TX Sprays 6/11 & 6/25/7 6 plants (1 basket)/trt; 5 DAT *7 DAT:both S1812 signif from
Control of WFT on Portulaca with Spray and Drench Treatments Scott Ludwig, TX Cooperative Extension 14 * 12 1 8 Conserve 11 Tolfenpyrad 14 Tolfenpyrad 21 6 4 2 7 14 21 28 27: S. Ludwig, Overton, TX Sprays 6/11 & 6/25/7 6 plants (1 basket)/trt; 5 DAT *7 DAT: both Tolfenpyrads signif from
2 18 16 14 12 1 8 6 4 2 Control of WFT on Portulaca with Spray and Drench Treatments Scott Ludwig, TX Cooperative Extension 27: S. Ludwig, Overton, TX Sprays 6/11 & 6/25/7 6 plants (1 basket)/trt; 5 7 14 21 28 DAT * BYI833 Conserve 11 DPX-E2Y45 Flagship 4 F TriStar+Cap Untreated *21 DAT: BYI signif from Conserve
Control of WFT on Portulaca with Spray and Drench Treatments Scott Ludwig, TX Cooperative Extension 14 12 1 8 6 Celero 2 D Celero 4 D Conserve 11 Flagship 4 D 4 2 7 14 21 28 27: S. Ludwig, Overton, TX Drenches 6/11/7? 6 plants (1 basket)/trt; 5 DAT
3 25 2 15 1 Control of Immature WFT on Gerbera Foliage: Sprays Luis Cañas, OSU Pylon pyridalyl 35WP 12 Overture pyridalyl 35WP 8 Conserve SC Tolfenpyrad 5 7 14 21 28 35 42 49 56 DAT 26: L. Cañas, OSU 6 plants/trt, 5 lvs/plant or 1 flower/plant Sprays 6/12 & 6/26, exc Pylon 6/12 & 6/19 Conserve, Pylon, tolfenpyrad signif effective Pyridalyls good at 7, 14, 21
Control of Immature WFT on Gerbera Foliage: Drenches Luis Cañas, OSU 3 25 2 Celero 16 WSG Conserve SC Spirotetramat 15 1 5 7 14 21 28 35 42 49 56 26: L. Cañas, OSU 6 plants/trt, 5 lvs/plant or 1 flower/plant Drenches 6/12, Sprays 6/12 & 6/26 DAT Suppressive but Celero better at 7DAT
Control of Adult WFT on Gerbera Foliage: Sprays Luis Cañas, OSU 14 12 1 8 6 Pylon pyridalyl 35WP Overture pyridalyl 35WP Conserve SC Tolfenpyrad 4 2 7 14 21 28 35 42 49 56 26: L. Cañas, OSU 6 plants/trt, 5 lvs/plant or 1 flower/plant Sprays 6/12 & 6/26, exc Pylon 6/12 & 6/19 DAT Conserve, Pylon, tolfenpyrad signif effective Pyridalyls OK but numbers low
Control of Adult WFT on Gerbera Foliage: Drenches Luis Cañas, OSU 9 8 7 6 5 4 3 2 1 7 14 21 28 35 42 49 56 DAT Celero 16 WSG Conserve SC Spirotetramat 26: L. Cañas, OSU 6 plants/trt, 5 lvs/plant or 1 flower/plant Drenches 6/12, Sprays 6/12 & 6/26 Celero OK, both suppressive or less
Control of Adult WFT on Gerbera Flowers: Sprays Luis Cañas, OSU 25 2 15 1 Pylon pyridalyl 35WP Overture pyridalyl 35WP Conserve SC Tolfenpyrad 5 7 14 21 28 35 42 49 56 26: L. Cañas, OSU 6 plants/trt, 5 lvs/plant or 1 flower/plant Sprays 6/12 & 6/26, exc Pylon 6/12 & 6/19 DAT Pylon OK at 7 DAT but not 35 DAT
Control of Adult WFT on Gerbera Flowers: Drenches Luis Cañas, OSU 16 14 12 1 8 6 4 2 Celero 16 WSG Conserve SC Spirotetramat 7 14 21 28 35 42 49 56 DAT
Control of Adult WFT on Gerbera Luis Cañas, OSU Conclusions Conserve (8 oz), Pylon (1), Tofenpyrad best sprays Pyridalyl looks good Drenches suppressive at best
Thrips Control in Chrysanthemum 22: R. Oetting, UGA 35 No. thrips scars/pot 3 25 2 15 1 5 Pedestal 9oz Pedestal 6oz Pedestal/Avid* Pedestal 12oz Water Conserve Applications 2/4, 11, 18 22: R. D. Oetting, Griffin, GA *Pedestal 12oz/Avid 8oz/Avid 8oz/Pedestal 12oz
New thrips on Ficus benjamina: Gynaikothrips uzeli L. Osborne, IFAS^