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Full-Text Articles in Life Sciences
Permethrin Residual Activity Against Ambrosia Beetle (Coleoptera: Curculionidae: Scolytinae) Attacks Following Field Aging And Simulated Rainfall Weathering, Matthew S. Brown, Karla M. Addesso, Fulya Baysal-Gurel, Nadeer N. Youssef, Jason B. Oliver
Permethrin Residual Activity Against Ambrosia Beetle (Coleoptera: Curculionidae: Scolytinae) Attacks Following Field Aging And Simulated Rainfall Weathering, Matthew S. Brown, Karla M. Addesso, Fulya Baysal-Gurel, Nadeer N. Youssef, Jason B. Oliver
Agricultural and Environmental Sciences Faculty Research
Adult ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) bore into ornamental nursery trees resulting in trunk vascular tissue damage, which can potentially kill trees. Ambrosia beetle exposure to surface-applied insecticides is minimal after internal trunk galleries are formed, so effective management requires insecticide treatments to be applied near the time of infestation or to have residual activity on the bark. Tree trunk sections (bolts) were used to determine the effect of field aging or irrigation (i.e., simulated rainfall weathering) on permethrin residual activity against ambrosia beetles. In all experiments, 30-cm-long bolts from Liriodendron tulipifera L. (Magnoliales: Magnoliaceae) were hollowed and filled with …
Evaluation Of Fungicides And Biofungicide To Control Phytophthora Root Rot (Phytophthora Cinnamomi Rands) And Ambrosia Beetles (Coleoptera: Curculionidae: Scolytinae) On Flowering Dogwoods Exposed To Simulated Flood Events, Matthew S. Brown, Fulya Baysal-Gurel, Jason B. Oliver, Karla M. Addesso
Evaluation Of Fungicides And Biofungicide To Control Phytophthora Root Rot (Phytophthora Cinnamomi Rands) And Ambrosia Beetles (Coleoptera: Curculionidae: Scolytinae) On Flowering Dogwoods Exposed To Simulated Flood Events, Matthew S. Brown, Fulya Baysal-Gurel, Jason B. Oliver, Karla M. Addesso
Agricultural and Environmental Sciences Faculty Research
Phytophthora root rot causes major economic losses in woody ornamental nurseries, especially in plants exposed to flooding. Ambrosia beetles, which attack stressed trees, are also important pests of woody plants. In this study, several products were evaluated for control of Phytophthora root rot and ambrosia beetles on containerized flowering dogwoods (Cornus florida L.) exposed to simulated flood events under field conditions. In two trials, preventive (7 days preflooding) or curative (1 day postflooding) sprench (combination spray and drench) treatments were applied to containerized dogwoods artificially inoculated with Phytophthora cinnamomi Rands. The plants were flooded by maintaining standing water for 1, …
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 …
Ethanol Injection Of Ornamental Trees Facilitates Testing Insecticide Efficacy Against Ambrosia Beetles (Coleoptera: Curculionidae: Scolytinae), Michael E. Reding, Jason B. Oliver, Peter B. Schultz, Christopher M. Ranger, Nadeer N. Youssef
Ethanol Injection Of Ornamental Trees Facilitates Testing Insecticide Efficacy Against Ambrosia Beetles (Coleoptera: Curculionidae: Scolytinae), Michael E. Reding, Jason B. Oliver, Peter B. Schultz, Christopher M. Ranger, Nadeer N. Youssef
Agricultural and Environmental Sciences Faculty Research
Exotic ambrosia beetles are damaging pests in ornamental tree nurseries in North America. The species Xylosandrus crassiusculus (Motshulsky) and Xylosandrus germanus (Blandford) are especially problematic. Management of these pests relies on preventive treatments of insecticides. However, field tests of recommended materials on nursery trees have been limited because of unreliable attacks by ambrosia beetles on experimental trees. Ethanol-injection of trees was used to induce colonization by ambrosia beetles to evaluate insecticides and botanical formulations for preventing attacks by ambrosia beetles. Experiments were conducted in Ohio, Tennessee, and Virginia. Experimental trees injected with ethanol had more attacks by ambrosia beetles than …