Thrips Western Flower Thrips Greenhouse Thrips. Identifying and Controlling Insects in. Whitefly sampling. Poinsettia thrips. Western flower thrips

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1 Identifying and Controlling Insects in the High Tunnels Thrips Western Flower Thrips Greenhouse Thrips Luis Cañas, Ph. D. ntomology The Ohio State University Cuban Laurel Thrips Whitefly sampling Yellow sticky cards 1000 sq ft Check them often: at least once per week Poinsettia thrips Image by Laurence Mound, ANIC, CSIRO Western flower thrips Thrips on flowers Frankliniella occidentalis, western flower thrips adult 1

2 IPM for Thrips Sanitation Monitoring incoming plant shipments Monitor plants surrounding facility Remove infested plants Biological control Amblyseius cucumeris, rate 3 25 / sq ft, 1000/sachett = $20 Amblyseius swirskii, rate 3 15 / sq ft Orius insidiosus Biopesticides + BC Insect killing fungus Tank-mixes well (probable synergism) with nematodes Many species including Beauvaria bassiana and Paecilomyces fumosoroseus Botanigard = No Fly = ; MGS Horticultural Inc. IPM for Thrips: Some Insecticides Available for Rotations ffect VG Conserve (spinosad) Harmless Impact on Biologicals Nematodes = Steinernema Nemasys = VG Pylon (chlorfenapyr) Slightly toxic G Overture (pyridalyl) G Mesurol (methiocarb) Harmful Hachi-Hachi (tolfenpyrad) G Avid (abamectin) Moderately toxic Pedestal (novaluron) Harmless to adults Botanigard (Beauveria bassiana) xample, Whitmire Micro Gen, MOA 13 Amblyseius swirskii Biobest = 2

3 Aphids (Hemiptera:Aphididae) Myzus persicae, green peach aphid: L = adult, R = nymph Aphis gossypii, cotton aphid Use of imidacloprid as drench or spray vs the green peach aphid Green peach aphid = M. persicae Zinnia elegans MOA 4A Marathon (imidacloprid), Flagship (thiametoxam), Tristar (acetamiprid), Safari (dinotefuran) Celero (clothianidin) Neonicotinoids IPM for Aphids xamples Green peach = Myzus persicae Melon = Aphis gossypii Biological control Aphidoletes aphidimyza, Aphidius colemani, IPM for Aphids: Some Insecticides Available for Rotations ffect Impact on Biologicals ndeavor (pymetrozine) Harmless to larvae Marathon (imidacloprid), Flagship Toxic as spray, non-toxic as (thiametoxam), Tristar (acetamiprid), drench Safari (dinotefuran) Kontos (spirotetramat) Aria (flonicamid) Ultra fine oil Harmless Orthene (acephate) Insecticidal Soap, M-Pede Azatin XL (azadirachtin) Harmful Harmless 3

4 IPM for Aphids: Some Insecticides Available for Rotations ffect Impact on Biologicals Xxpire (spinetoram + sulfoxaflor) Harmless? Mite Damage Mainspring (cyantraniliprole) Harmless? Mites (two spotted spider mite) Broad mites Mite damage IPM for Mites xamples Two spotted spider mite = Tetranychus urticae Cyclamen mite = Phytonemus pallidus Broad mite = Polyphagotarsonemus latus Biological control Phytoseiulus persimilis, Amblyseius cucumeris, 4

5 ffect IPM for Mites: Miticides Floramite (bifenazate) Impact on Biologicals Pylon (chlorfenapyr) (vs Broad, Cyclamen) Harmful Avid (abamectin) (vs Broad, Cyclamen) Harmful TetraSan (etoxazole), Hexygon (hexythiazox), Harmful Ovation (clofentezine) Sanmite (pyridaben) (vs Broad), Akari (fenpyroximate) Harmful Whitefly Identification Greenhouse Trialeurodes vaporariorum Silver leaf Bemisia tabaci VG Shuttle (acequinocyl) Sultan (cylfumetofen) Insecticidal Soap, M-Pede Judo (spiromesifen) (vs Broad and Cyclamen), Kontos (spirotetramat) Harmful New insecticides, miticides BASF Sultan (2014) Cyflumetofen New mode of action? Miticide, very effective against two spotted spider mites, including eggs? White Flies (Hemiptera: Aleyrodidae) Bemisia tabaci, silver leaf whitefly: L = adult, R =nymphs Trialeurodes vaporariorum, glasshouse whitefly nymphs Trialeurodes abutilonia, banded wing whitefly adult Whiteflies Banded wing Greenhouse Silver leaf Whitefly damage (From Flint 1995) 5

6 Parasitized Nymphs ncarsia Mealy bugs (Hemiptera: Pseudoccidae) retmocerus Planococcus citri, citrus mealy bug: L = female R = male Whitefly control (draft) Mealybugs Longtailed mealybug, Pseudococcus longispinus Madeira mealybug, Phenacoccus madeiresis Pictures from: Lance S. Osborne, University of Florida Citrus Mealybug IPM for Mealybugs: Insecticides ffect, VG Safari (dinotefuran), Flagship (thiametoxam), Tristar (acetamiprid), Marathon (imidacloprid), clothianidin Impact on Biologicals Harmful as spray VG Distance (pyriproxyfen) Harmless Talus (buprofezin) Harmless Kontos (spirotetramat)? OSU: Luis Cañas, Nuris Acosta VG,G Insecticidal Soap, M-Pede (potassium salts of Harmful fatty acids) Herbal aphid control (thyme, mint oil), GSHGIS (canola oil, pyrethrins) VG Talstar (bifenthrin) Harmful Cloyd AMT 2005, G25; Ludwig AMT 2006, G14, G15; Canas AMT 2007, G42. 6

7 Fungus Gnat and Shore Flies Fungus Gnat IPM for Fungus Gnats and Shore Flies Pathogens Steinernema feltiae (46 K / sqr ft) Also used against western flower thrips Affected by high temperatures Steinernema carpocapseae Shore Fly Fungus Gnat (Diptera: Sciaridae) Bradysia impatiens, fungus gnat: L = adult, R = larva, Down = egg IPM for FG and Shore Flies: Some Insecticides Available for Rotations Impact on Biological Control Agents VG Nemasys VG Citation (cyromazine) Slightly toxic VG Distance (pyriproxyfen) Slightly toxic nstar II (s-kinoprene) Adept (diflubenzuron) G Marathon (imidacloprid), Safari (dinotefuran) Toxic as spray, nontoxic as drench Azatin (azadirachtin) XL Slightly toxic Number of Adults Fungus Gnats merged (30 DAT) Fungus Gnats = Soil Moisture 350 a a 300 a 250 ab abc bcd 100 cd 50 d d Soil Moisture (%) Thanks! Address: Dr. Luis Cañas 1680 Madison Ave., Wooster, OH canas.4@osu.edu Funding: USDA NIFA AF 7

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