ࡱ> JLI w"bjbjcTcT 7L>>wd d $ccccc>>>$U"Z>>>>>cc>>>>cc>>>>|RcMl>B~0J">"R"R,>>>>>>>>>>>>>>>>">>>>>>>>>d m: Pesticides for Interior Plants Karen L. Panter, Horticulture Pesticides for Interior Plants Karen L. Panter, Extension Horticulture Specialist, Department of Plant Sciences, University of Wyoming, 307-766-5117, kpanter@uwyo.edu Assumptions You already know insect identification You already know basic disease identification You already know cultural problem identification Keep in mind Problems on interior plants Often not specific Environmental issues typically primary May be several stressing the plant at the same time For example For example, general chlorosis can be symptomatic of Light levels too high Insufficient fertilization Temperatures too high Insect infestation or root rotting disease Another example Another example, wilting can be a symptom of Overwatering Underwatering High soluble salts from overfertilizing Compacted growing medium Poor drainage High temperatures Low temperatures If problem is a pathogen Make sure Have diagnosed by reputable lab Fungal, bacterial, and viral problems Not common in interior plantings Powdery mildews - fungal Powdery mildew Host specific Copper sulfate pentahydrate (Phyton 27) 24 hr REI Neem (Triact 70) 4 hr REI Thiophanate methyl (Clearys 3336) 12 hr REI Leaf spots, blights - fungal Fungal leaf spots, blights Many causal organisms Colletotrichum Cercospora Fusarium Helminthosporium Alternaria Botrytis Others Leaf spots, blights - fungal Thiophanate methyl (Clearys 3336) 12 hr REI Copper sulfate pentahydrate (Phyton 27) 24 hr REI Triflumizole (Terraguard) 12 hr REI Neem (Triact 70) 4 hr REI Water molds, root and stem rots - fungal Fungal water molds Pythium Phytophthora Fungal root and stem rots Rhizoctonia Fusarium Thielaviopsis Water molds, root and stem rots - fungal Thiophanate methyl (Clearys 3336) 12 hr REI Copper sulfate pentahydrate (Phyton 27) 24 hr REI Trichoderma (PlantShield, SoilGard) 0 REI Mefenoxam (Subdue Maxx) 0 REI PCNB (Terraclor)(?) 12 hr REI Triflumizole (Terraguard) 12 hr REI Systemic - bacterial Bacteria - systemic Erwinia Copper sulfate pentahydrate (Phyton 27) 24 hr REI Localized - bacterial Bacteria - localized Pseudomonas Xanthomonas Copper sulfate pentahydrate (Phyton 27) 24 hr REI Viruses Viruses Impatiens necrotic spot (INSV) Tomato spotted wilt (TSWV) Mosaics No pesticides available for viruses Try to manage vector Remove and destroy plant Nematodes Nematodes Small roundworms Four possible Lesion Pratylenchus Spiral Helicotylenchus Root knot Meliodogyne Foliar or spring crimp - Aphelenchoides Not problems if no native soil used Steam pasteurize or fumigate Mites Mites Two-spotted most common Also broad mite and cyclamen mite Some miticides available Bifenazate (Floramite) 12 hr REI Insecticidal soaps 12 hr REI Oils 4 hr REI Bifenthrin (Talstar) 12 hr REI Fenpropathrin (Tame) 24 hr REI RUP Mealy bugs Mealy bugs Citrus most common Wipe off with rubbing alcohol Beauvaria bassiana strain GHA (Botanigard, Naturalis-O) Pathogenic fungus, spores must land on insect 4 hr REI Imidacloprid (Marathon) 12 hr REI Insecticidal soaps 12 hr REI Oils 4 hr REIMore mealy bugs Pyriproxyfen (Distance) 12 hr REI Suppression Cyfluthrin (Decathlon) 12 hr REI Tau-fluvalinate (Mavrik) 12 hr REI Bifenthrin (Talstar) 12 hr REI Fenpropathrin (Tame) 24 hr REI Scale Scales Brown soft, hemispherical very common soft scales Gently scrape off Horticultural oils 4 hr REI Pyriproxyfen (Distance) 12 hr REI S-kinoprene (Enstar) 4 hr REIMore scale Cyfluthrin (Decathlon) 12 hr REI Tau-fluvalinate (Mavrik) 12 hr REI Bifenthrin (Talstar) 12 hr REI Fenpropathrin (Tame) 24 hr REI Aphids Aphids Green peach most common Others include chrysanthemum, foxglove, potato, and melon Imidacloprid (Marathon) 12 hr REI Beauvaria bassiana strain GHA (Botanigard, Naturalis-O) Pathogenic fungus, spores must land on insect, 4 hr REIMore aphids Pymetrozine (Endeavor) feeding disruptor 12 hr REI Insecticidal soaps 12 hr REI Oils 4 hr REI Azadirachtin (Azatin, Ornazin) 4 hr REI (Azatin), 12 hr (Ornazin) Pyriproxyfen (Distance) 12 hr REI suppression More aphids S-kinoprene (Enstar) 4 hr REI Cyfluthrin (Decathlon) 12 hr REI Tau-fluvalinate (Mavrik) 12 hr REI Bifenthrin (Talstar) 12 hr REI Fenpropathrin (Tame) 24 hr REI Whiteflies Whiteflies Greenhouse most common Pyrethroids available Imidacloprid (Marathon) 12 hr REI Pymetrozine (Endeavor) feeding disruptor 12 hr REI Beauvaria bassiana strain GHA (Botanigard, Naturalis-O) Pathogenic fungus, spores must land on insect 4 hr REIMore whiteflies Horticultural oils Diflubenzuron (Adept) 12 hr REI suppression Oils 4 hr REI Azadirachtin (Azatin, Ornazin) 12 hr REI Pyriproxyfen (Distance) 12 hr REIMore whiteflies S-kinoprene (Enstar) 4 hr REI Cyfluthrin (Decathlon) 12 hr REI Tau-fluvalinate (Mavrik) 12 hr REI Bifenthrin (Talstar) 12 hr REI Fenpropathrin (Tame) 24 hr REI Thrips Thrips Western flower most common Few insecticides available unless move plants to greenhouse or outdoors Beauvaria bassiana strain GHA (Botanigard, Naturalis-O) Pathogenic fungus, spores must land on insect 4 hr REI Azadirachtin (Azatin, Ornazin) 12 hr REI Cyfluthrin (Decathlon) 12 hr REI Tau-fluvalinate (Mavrik) 12 hr REI Bifenthrin (Talstar) 12 hr REI Fungus gnats Fungus gnats Eliminate decaying organic matter Biologicals like nematodes Few insecticides available Bacillus thuringiensis israelensis (Gnatrol) 4 hr REI Larvae only cyromazine (Citation) 12 hr REI Insecticidal soap 12 hr REIMore fungus gnats Diflubenzuron (Adept) 12 hr REI Azadirachtin (Azatin, Ornazin) 12 hr REI Cyromazine (Citation) 12 hr REI Pyriproxyfen (Distance) 12 hr REIMore fungus gnats S-kinoprene (Enstar) 4 hr REI Bifenthrin (Talstar) 12 hr REI Shore flies Shore flies Eliminate algae, decaying organic matter Cyromazine (Citation) 12 hr REI Diflubenzuron (Adept) 12 hr REI Pyriproxyfen (Distance) 12 hr REI Moth flies Moth flies Uncommon problem Keep drains and pipes clean No insecticides available References References Taylor, N.J., S. Nameth, and J. Chatfield. 1996. Diagnosing problems on indoor plants. Ohio State University Extension Fact Sheet HYG-3068-96. http://ohioline.osu.edu/hyg-fact/3000/3068.html. 12/1/2008. More references Plantfacts web site. http://plantfacts.osu.edu/ More references Townsend, L. and R. Bessin. Some insecticides/acaricides labeled for use in greenhouses and interior plantscapes. University of Kentucky Extension Service bulletin ENTFACT-450. More references Buss, E.A., L.S. Osborne, S.M. Dickerson, and J.F. Price. 2007. Managing pests of indoor plantscapes. University of Florida IFAS Extension bulletin ENY-694. http://edis.ifas.ufl.edu/IG110. 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