Chemical insecticide rotations in vegetable crops (2021 Webinar)

Chemical insecticide rotations in vegetable crops (2021 Webinar)

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  How to rotatechemical insecticides in vegetables! Dr. Ayanava Majumdar (Dr. A) Extension Professor & State SARE Coordinator Auburn, AL 36849 Tel: (251) 331-8416 [email protected] www.aces.edu/ipmcommunicator www.alabamabeginningfarmer.com Alabama Extension Commercial Horticulture Alabama Vegetable IPM Alabama Farmer Connection Twitter: @AlabamaIPM Use the Farming Basics App for your IPM needs! Research & Educational Programs are funded by grants from USDA-NIFA BFRD, CPPM/EIP, OREI, SARE, and ADAI Specialty Crops Block. Thank you for your support!
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  “When Insecticides Failto Work!” Beware of The Cowpea Curculio… Be a good pesticide steward! Well, Mr. Curculio! What else can I get you today?? Major IPM issues in Alabama: • Insecticide resistance • Pest resurgence • Loss of natural enemies “Integrated pest management (IPM) is a threshold-based decision management system which leads to judicious use of multiple pest control tactics.” What actually happens! • Misidentification of insects • Late detection of insects, leads to panic! • Insecticide misuse
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  SE US Vegetable Production Handbook (Annually Updated)
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  Insecticide Modes ofAction (MoA) Mostly C – sodium ion imbalance in nerves Broad spectrum, knock-down Insecticide resistance is common C = Contact activity, S = Systemic activity (long residual), I = Ingestion activity, T = Translaminar (longer residual) Mostly C, some S action (Orthene) Broad spectrum insecticides Inhibition of AChE in nerves Insecticide resistance common. S/T, some C action Mimic insect nerve signal (AChE) Cause lack of coordination, partial paralysis Selective to aphids, WFs Microbial derivative, nerve toxins Have organic version (Entrust) Inhibit chitin formation (Novaluron) Disrupt molting (cyromazine) Premature molting (methoxyfenozide) C, selective against spider mites I, blocks nerve signal transmission I, act on special nerve receptors Bacillus thuringiensis or Bt: Stomach action Organophosphates Synthetic pyrethroids: Type I (excite) Type II (depress) Neonicotinoids Carbamates Sulfoxamines Spinosyns Selective to aphids Insect growth regulator or IGR (Juvenile hormone mimic) Insect growth regulators Selective miticides Feeding blockers Feeding blockers Nonselective Selective
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  Thrips Management inTomatoes April May June July August September October November Thrips + Caterpillars Active Spider mite risk zone (drought situation) Class 28A: Chlorantraniliprole (Coragen) *Cyantraniliprole (Verimark/Exirel) Planting-time Mid-season/ Peak insect activity Late-season/ Near harvest Class 5: Spinetoram (Radiant), or *Good activity against WFT **Spider mite + tobacco thrips control *Class 9C: Flonicamid (Beleaf), or Class 28: *Cyclantraniliprole (Harvanta) *Class 1A: Methomyl (Lannate), or *Class 15: Novaluron (Rimon) Class 4A: Spinetoram (Radiant) *Class 21: Tolfenpyrad (Torac) Western flower thrips (WFT) **Class 6: Abamectin (Agri-Mek) Tobacco thrips Class 4A: Acetamiprid (Assail) Robert M. McPherson, University of Georgia, Bugwood.org Jack T. Reed, Mississippi State University, Bugwood.org
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  Aphid & WhiteflyManagement Plan During Drought 0 1 2 3 4 5 6 Wk 1 Wk 2 Wk 3 Wk 4 Wk 5 Wk 6 Wk 7 Early season (preventive tret.) Mid/late-season (therapeutic tret.) NOTE: Use selective materials when biological control agents (BCAs) are at peak activity! BCA Aphid pop. Class 4A: imidacloprid-Admire-21d PHI or thiamethoxam-Platinum-30d - PHI Aphid + Whitefly Class 9A: pyrifluquinazon-PQZ-1d PHI Class 9B: pymetrozine-Fulfill-0d PHI Class 9D: afidopyropen-Sefina-0d PHI Whitefly only: Class 4A: acetamiprid-Assail-7d PHI Class 16: buprofezin-Courier-1d PHI Class 7C: pyriproxyfen-Knack-1d PHI Class 23: spirotetramat-Movento-1d PHI Class 3 for aphids (synthetic pyrethroids 0 to 7 d PHI) Potato aphid Whitney Cranshaw, Colorado State University, Bugwood.org Silverleaf whitefly Scott Bauer, USDA Agricultural Research Service, Bugwood.org
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  Caterpillar Insecticides toAvoid Spider Mite Outbreaks Spider mite risk zone (drought situation) Class 5: Spinetoram (Radiant) Class 15: Diflubenzuron (Dimilin) and Novaluron (Diamond) Class 18: Methoxyfenozide (Intrepid) Class 11A (Bt): Xentari, DiPel, Javelin Class 28: Lambda Cyhalo + Chlorantraniliprole (Beseige) Class 28: Chlorantraniliprole (Coragen) Class 11A (Bt): Xentari, DiPel, Javelin Class 3A: Synthetic pyrethroids (reduced use) Class 3A Synthetic pyrethroids (reduced use) Class 18: Methoxyfenozide + Spinetoram (Intrepid Edge) Caterpillar activity Yellowstriped armyworm Tomato hornworm Beet armworm
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  Caterpillar/YMLB Control inBrassicas 0 1 2 3 4 5 6 Wk 1 Wk 2 Wk 3 Wk 4 Wk 5 Wk 6 Wk 7 Early season (preventive) Mid/late-season (therapeutic) NOTE: Use selective materials when biological control agents (BCAs) are at peak activity. Start with a spinosad or pyrethroid if you have yellowwmargined leaf beetles! BCAs Caterpillars Class 11A (Bt – Xentari-0d PHI) Class 5 (spinetoram-Radiant-1d PHI) Class 15 (novaluron-Rimon-7d PHI) Class 11A (Bt – Xentari-0d PHI) Class 3A (cyfluthrin-Tombstone-0d PHI) Yellowmargined leaf beetle Cabbage white/imported cabbage worm Whitney Cranshaw, Colorado State University, Bugwood.org
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  Cucumber beetle/Squash bugcontrol (cucurbits) Wk 1 Wk 2 Wk 3 Wk 4 Wk 5 Wk 6 Wk 7 Early season (preventive) Mid/late-season (therapeutic) Class 4A imidacloprid-Admire Pro - 21d soil NOTE: Use systemic products early in the season. Use selective materials when biological control agents (BCAs) are at peak activity. Class 4A dinotefuran – Venom -1d PHI foliar acetamiprid – Assail - 0d PHI foliar clothianidin – Belay - 21d PHI foliar Spider mite risk zone (drought situation) Crop PHI Cantaloupe, Watermelon, Cucumbers, pumpkin, Squash Fastac (1), Baythroid (0), Brigade (3), Tombstone (0), Asana (3), Warrior (1), Mustang Max (1) Class 3A (synthetic pyrethroids – in Table) acetamiprid-Assail (eggs/nymphs)-0d PHI Class 3A (synthetic pyrethroids – in Table) Chemical Reference (CB control) Admire drench, Asana McLeod et al. (2003) Asana Sorensen & Holloway (2000) Platinum + Warrior, Admire (low wilt) Kuhar et al. (2004) Sevin weekly, Admire in-furrow McGrath & Gilrein (2001) Asana (low wilt) Speese et al. (1993) *Various crops that get striped cucumber beetles Spotted & Striped cucumber beetles
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  Home Garden Chemical InsectControl Product Overview • Be careful with Dust formulations – nontarget effects, drift and rain wash-off are common • Rotate insecticides from different chemical classes to avoid insecticide resistance • Don’t apply insecticides in the heat of the day – apply at dusk! • Stop insecticide use to assess effectiveness Chemical class Active ingredient Mode of action Formulations Examples 1A Carbaryl Contact Liquid, Dust Fertilome Carbaryl Garden Insect Spray Malathion Contact Liquid Hi-Yield 55% Malathion 3 Bifenthrin Contact Liquid, granules Ortho Bug-B-Gon Zeta-cyper Contact Liquid, granules Garden-Tech Sevin Gamma-cyhalo Contact Liquid Spectracide Triazicide Lambda-cyhalo Contact Liquid Cyonara Permethrin Contact Liquid, Dust Bonide Eight Insect Control 4A Acetamiprid Contact, systemic Liquid Ortho Flower, Fruit, & Vegetable Insect Killer Imidacloprid Contact, systemic Liquid Bayer Fruit, Citrus & Vegetable Concentrate 5 Spinosad Contact Liquid Bonide Captain Jack’s Deadbug Brew Home Garden Vegetables: Insect Control Guide: https://www.aces.edu/blog/topics/lawn-garden/home-garden-vegetable-insect-control-ipm-guide/
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  Look for theBee Box on Labels!
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  YouTube Videos on‘BEGINNING FARMER PROJECT’ Playlist!
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  COVID-19 Response VirtualPrograms: Reaching to New & Experienced Producers!
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  Commercial Horticulture WebinarSurvey Please scan the QR code with your smart phone & survey should open in a browser! Please let us know how we did! Thank you for your patience! Download Farming Basics App and subscribe to the Alabama IPM E-newsletter today!