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Full-Text Articles in Horticulture
Evaluation Of A Lignin-Encapsulated Nootkatone Formulation Against Tetranychus Urticae (Acari: Tetranychidae), Karla M. Addesso, Paul A. O'Neal, Shannen Leahy, Kevin Trostel, Robert W. Behle
Evaluation Of A Lignin-Encapsulated Nootkatone Formulation Against Tetranychus Urticae (Acari: Tetranychidae), Karla M. Addesso, Paul A. O'Neal, Shannen Leahy, Kevin Trostel, Robert W. Behle
Agricultural and Environmental Sciences Faculty Research
Botanical-based miticides, such as neem oil, are used in organic and conventional agronomic production as part of chemical rotation plans to suppress pest mite populations. Other plant-based compounds such as nootkatone (a component of essential oils distilled from grapefruit, Citrus paradisi Macfayden (Rutaceae), and Alaskan yellow cedar, Chamaecyparis nootkatensis [D. Don] Spach [Cupressaceae]), also may serve as effective organic miticides in crop production systems. We report on a lignin-encapsulated (LE) nootkatone formulation (previously effective at repelling ticks) that was evaluated as a miticide against the twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae). At an application rate of 1 g/L …
Interaction Of A Preventative Fungicide Treatment And Root Rot Pathogen On Ambrosia Beetle Attacks During A Simulated Flood Event, Karla Addesso, Fulya Baysal-Gurel, Jason Oliver, Christopher Ranger, Paul O'Neal
Interaction Of A Preventative Fungicide Treatment And Root Rot Pathogen On Ambrosia Beetle Attacks During A Simulated Flood Event, Karla Addesso, Fulya Baysal-Gurel, Jason Oliver, Christopher Ranger, Paul O'Neal
Agricultural and Environmental Sciences Faculty Research
Flooding can increase tree susceptibility to root rot pathogens as well as attacks by ambrosia beetles attracted to stress-induced ethanol emissions. The objective of this study was to investigate the interaction of a preventative fungicide treatment and root infection with Phytophthora cinnamomi on ambrosia beetle attacks in flood stressed trees. A fungicide (Pageant® Intrinsic®) was evaluated in two flood trials using Eastern redbud and tulip poplar trees with treatments including the fungicide with or without pathogen or no fungicide with or without pathogen. Fungicide treated trees had fewer ambrosia beetle attacks, particularly in trees without P. cinnamomi co-infection. In a …
Swirski Mite Controlled-Release Sachets As A Pest Management Tool In Container Tree Production, Karla M. Addesso, Anthony L. Witcher, Donna C. Fare
Swirski Mite Controlled-Release Sachets As A Pest Management Tool In Container Tree Production, Karla M. Addesso, Anthony L. Witcher, Donna C. Fare
Agricultural and Environmental Sciences Faculty Research
Adoption of biological control tools in woody ornamental nursery production has lagged behind other agriculture fields. One of the major obstacles to adoption is lack of information on the efficacy of various biological control agents in nursery production systems. The predatory mite Amblyseius swirskii, sold commercially as “swirski mite,” is a generalist predatory mite that has recently been adopted as a generalist control for a wide range of mite and insect pests, including thrips (Thripidae), whiteflies (Aleyrodidae), eriophyid mites (Eriophyidae), broad mite (Polyphagotarsonemus latus), and spider mites (Tetranychidae). A controlled-release sachet formulation of swirski mite was evaluated …
Bacterial Spot And Blight Diseases Of Ornamental Plants Caused By Different Xanthomonas Species In Turkey, Mustafa Mirik, Yesim Aysan, Fulya Baysal-Gurel
Bacterial Spot And Blight Diseases Of Ornamental Plants Caused By Different Xanthomonas Species In Turkey, Mustafa Mirik, Yesim Aysan, Fulya Baysal-Gurel
Agricultural and Environmental Sciences Faculty Research
Putative strains belonging to Xanthomonas spp. causing leaf spot and blight diseases on geranium (Pelargonium peltatum and P. hortorum), begonia (Begonia × tuberhybrida), anthurium (Anthurium andraeanum), Chinese hibiscus (Hibiscus rosa-sinensis), and English ivy (Hedera helix) growing in Turkey were isolated. All bacterial strains were classified as Gram-negative, oxidase negative, catalase, levan and starch hydrolysis positive, with hypersensitive reaction positive on tobacco and pathogenic to host plants. Identification of these strains was further confirmed by serological method using ELISA kits, conventional PCR, carbon utilisation, and FAME. Results of the identification showed that 28, 24, 10, 2, and 1 strains were identified …