Stink Bug Management Update. Thomas Turini UCCE Fresno Vegetable Crops Advisor Fresno County
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1 Stink Bug Management Update Thomas Turini UCCE Fresno Vegetable Crops Advisor Fresno County
2
3 Why did Populations and Damage Increase? Changes in insecticides used? Possible Increase in permanent crops which may serve as overwintering sites? Possible Different species? Probably not Recent weather conditions? Possible
4 Why did Populations and Damage Increase? Changes in insecticides used? Increase in permanent crops which may serve as overwintering sites? Different species? Recent weather conditions?
5 Why did Populations and Damage Increase? Changes in insecticides used? Increase in permanent crops which may serve as overwintering sites? Different species? Recent weather conditions?
6 Consperse Stink Bug Schematic Life Cycle Dark Light Weeds Tomato June Summer Solstice Diapause Leaf Litter December Winter Solstice Weeds Tomato June Summer Solstice Diapause Leaf Litter Russian Thistle Cheeseweed (little mallow) Mustard Fall - Winter Immature Adult F1 F2 Fall - Winter Immature Adult F3 Slide adapted from Goodell 2014
7 Why did Populations and Damage Increase? Changes in insecticides used? Increase in permanent crops which may serve as overwintering sites? Different species? Recent weather conditions?
8 Consperse stink bug: Euschistus conspersus
9 Stink Bug Species Reported in CA Say's stink bug complex: Chlorochroa sayi and Chlorochroa uhleri Redshouldered stink bug: Thyanta pallidovirens Consperse stink bug: Euschistus conspersus Southern green stink bug: Nezara viridula
10 Stink Bugs Recently Reported in California Halyomorpha halys Brown marmorated Euschistus servus Brown stink bug Slide adapted from Goodell 2014
11 Brown marmorated stink bug (BMSB), Halyomorpha halys
12 Brown vs. Consperse Slide adapted from Goodel 2014
13 All Identified Stink Bugs Associated with Fresno Co. Tomatoes from were Consperse Photos by E. Hannon 2014
14 Why did Populations and Damage Increase? Changes in insecticides used? Increase in permanent crops which may serve as overwintering sites? Different species? Recent weather conditions?
15 Monthly DD >54 Accumulation 30 yr Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec
16 Why did Populations and Damage Increase? Changes in insecticides used? Possible Increase in permanent crops which may serve as overwintering sites? Possible Different species? Probably not Recent weather conditions? Possible
17 CTRI Funded Project Objectives: Overwintering site identification and evaluate seasonal population development Pheromone trap evaluation Insecticide comparisons and program evaluation
18 Firebaugh-Area x
19 Five Points-Area x
20 Huron-Area x
21 Stink Bug Detected in Leaf Litter Fall 14
22 Overwintering site identified Tomatoes harvested in mid-oct 2014 Fallow field Oranges Mandarins N
23 Sterling stink bug live trap
24 Trapping in High Risk Areas Firebaugh Five Points Huron Mar 12-Mar 22-Mar 1-Apr 11-Apr 21-Apr 1-May 11-May 21-May 31-May
25 Trap/Canopy Detection at UC WSREC trap plant shake Jun 20-Jun 30-Jun 10-Jul 20-Jul 30-Jul 9-Aug 19-Aug 29-Aug 8-Sep
26 stink bugs detected in canpoy Trap/Canopy Stink Bug Detection y = x R² = stink bugs captured in pheromone traps
27 Insecticide Trials (Efficacy and Programs)
28 Not all pesticides mentioned in this presentation are currently registered in tomatoes. Carefully read all current labels before writing a pesticide recommendation
29 Insecticides with Activity against Stink Bug > 80% control (adults and nymphs) Beta cyfluthrin Permethrin Lambda-cyhalothrin + thiamethoxam Bifenthrin Dimethoate Dimethoate Dinotefuron Venom > 60% control (adults and nymphs) Beta-cyfluthrin + Leverage imidacloprid Lambda-cyhalothrin Warrior II Thiamethoxam Clothianidin Methomyl Baythroid Ambush, Pounce and others Warrior II + Actara Brigade, Bifenture, Capture, and others Actara Belay Lannate < 50% control of adults and > 80% control of nymphs S-cypermethrin Hero, Mustang Max From Frank Zalom (UC Davis Entomology)
30 Insecticides Selected for 2014 Trials IRAC #* Trade name Common name 1A Lannate methomyl 1B Dibrom 8E naled 1B dimethoate dimethoate 2B Thionex endosulfan 3A Danitol fenpopathrin 3A Warrior II lambda-cyhalothrin 3A + 4A Endigo ZCX lambda-cyhalothrin + thiamethoxam 3A + 4A Leverage cyfluthrin + imidicloprid 4A Belay clothianidin 4A Venom dinotefuran 21A Torac tolfenpyrad * IRAC# mode of action as assigned by the Insecticide Resistance Action Committee
31 Efficacy Trial Details Belay 4 oz + Warrior II 1.92 oz Danitol oz Dibrom 8E 1.0 pts Dibrom 8E 1.0 pts TRAP* Dimethoate 1 pt Endigo CX 4.5 fl oz Endigo ZCX 4.5 fl oz Lannate SP 1 lb Asana 9.6 fl oz Leverage oz Leverage oz TRAP Thionex 1 1/3 qts Torac 21.0 fl oz Venom 70 SG 4 oz Warrior II 1.92 oz Untreated H5608 planted 21 May; harvested Sep - All plots received an application on 8 and 29 Aug * Treatments followed by TRAP were applied on 18 Jul after 1 st capture. ** Asana was applied on 15 Aug in addition to the Lannate applications on 8 and 29 Aug,
32 Stink bug efficacy, yield and quality Fruit quality (%) Treatment yield (t/a) reds greens sunburn rot stink bug Venom 70 SG 4 oz Leverage oz trap Thionex 1 1/3 qts Leverage oz Danitol oz Belay 4 oz + Warrior II 1.92 oz Endigo CX 4.5 fl oz Torac 21.0 fl oz Warrior II 1.92 oz Lannate SP 1 lb Asana 9.6 fl oz Dibrom 8E 1.0 pts trap Endigo ZCX 4.5 fl oz Dibrom 8E 1.0 pts Dimethoate 1 pt Untreated LSD (P=0.05) s CV (%) Unless otherwise specified all applications were made on 8 and 29 Aug. Treatments followed by trap were applied on 18 Jul after 1 st capture. Asana was applied on 15 Aug in addition to the Lannate applications on 8 and 29 Aug, H5608 planted 21 May and harvested Sep
33 Stink bug efficacy, yield and quality Fruit quality (%) Treatment yield (t/a) reds greens sunburn rot stink bug Venom 70 SG 4 oz Leverage oz trap Thionex 1 1/3 qts Leverage oz Danitol oz Belay 4 oz + Warrior II 1.92 oz Endigo CX 4.5 fl oz Torac 21.0 fl oz Warrior II 1.92 oz Lannate SP 1 lb Asana 9.6 fl oz Dibrom 8E 1.0 pts trap Endigo ZCX 4.5 fl oz Dibrom 8E 1.0 pts Dimethoate 1 pt Untreated LSD (P=0.05) s CV (%) Unless otherwise specified all applications were made on 8 and 29 Aug. Treatments followed by trap were applied on 18 Jul after 1 st capture. Asana was applied on 15 Aug in addition to the Lannate applications on 8 and 29 Aug, H5608 planted 21 May and harvested Sep.
34 Stink bug efficacy, yield and quality Fruit quality (%) Treatment yield (t/a) reds greens sunburn rot stink bug Venom 70 SG 4 oz Leverage oz trap Thionex 1 1/3 qts Leverage oz Danitol oz Belay 4 oz + Warrior II 1.92 oz Endigo CX 4.5 fl oz Torac 21.0 fl oz Warrior II 1.92 oz Lannate SP 1 lb Asana 9.6 fl oz Dibrom 8E 1.0 pts trap Endigo ZCX 4.5 fl oz Dibrom 8E 1.0 pts Dimethoate 1 pt Untreated LSD (P=0.05) s CV (%) Unless otherwise specified all applications were made on 8 and 29 Aug. Treatments followed by trap were applied on 18 Jul after 1 st capture. Asana was applied on 15 Aug in addition to the Lannate applications on 8 and 29 Aug,H5608 planted 21 May and harvested Sep
35 Pre-Harvest Stink Bug Counts and Damage Evaluation
36 Stink bug efficacy, field evaluations Stink bug counts (per 4 ft) Stink bug damage (0-10) Treatment 21-Aug 28-Aug 5-Sep 21-Aug 28-Aug 5-Sep Venom 70 SG 4 oz Leverage oz trap Thionex 1 1/3 qts Leverage oz Danitol oz Belay 4 oz + Warrior II 1.92 oz v Endigo CX 4.5 fl oz Torac 21.0 fl oz Warrior II 1.92 oz Lannate SP 1 lb/asana 9.6 fl oz Dibrom 8E 1.0 pts trap Endigo ZCX 4.5 fl oz Dibrom 8E 1.0 pts Dimethoate 1 pt Untreated LSD (P=0.05) t NS s CV (%) Unless otherwise specified all applications were made on 8 and 29 Aug. Treatments followed by trap were applied on 18 Jul after 1 st capture. Asana was applied on 15 Aug in addition to the Lannate applications on 8 and 29 Aug, H5608 planted 21 May and harvested Sep
37 Stink bug efficacy, field evaluations Stink bug counts (per 4 ft) Stink bug damage (0-10) Treatment 21-Aug 28-Aug 5-Sep 21-Aug 28-Aug 5-Sep Venom 70 SG 4 oz Leverage oz trap Thionex 1 1/3 qts Leverage oz Danitol oz Belay 4 oz + Warrior II 1.92 oz v Endigo CX 4.5 fl oz Torac 21.0 fl oz Warrior II 1.92 oz Lannate SP 1 lb/asana 9.6 fl oz Dibrom 8E 1.0 pts trap Endigo ZCX 4.5 fl oz Dibrom 8E 1.0 pts Dimethoate 1 pt Untreated LSD (P=0.05) t NS s CV (%) Unless otherwise specified all applications were made on 8 and 29 Aug. Treatments followed by trap were applied on 18 Jul after 1 st capture. Asana was applied on 15 Aug in addition to the Lannate applications on 8 and 29 Aug, H5608 planted 21 May and harvested Sep
38 Stink Bug Project 2014 Overview Overwintering sites: Located in Fall 2014 singly or in groups up to 16 in leaf litter near late season tomatoes.
39 Stink Bug Project 2014 Overview Pheromone baited traps captured stink bugs before they were detected in the canopy, but quantities in traps did not correspond to canopy densities or damage observed.
40 Stink Bug Project 2014 Overview Thionex, Venom, Leverage, Belay + Warrior II and Endigo reduced damage. With the exception of Thionex, the only materials with apparent activity were pyrethroids, neonicotinoids or a combination of the two.
41 Acknowledgements CTRI Peter Goodell: UC IPM Kearney Ag Center Frank Zalom : UC Davis Entomology Les Ehler : Retired UC Davis Managers and PCAs of large scale ag operations in Fresno-area West Side Research and Extension Center
42 Questions? Tom Turini
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