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Evaluation Of Systemic Imidacloprid And Herbicide Treatments On Flatheaded Borer (Coleoptera: Buprestidae) Management In Field Nursery Production, Karla M. Addesso, Jason B. Oliver, Nadeer N. Youssef, Donna C. Fare
Evaluation Of Systemic Imidacloprid And Herbicide Treatments On Flatheaded Borer (Coleoptera: Buprestidae) Management In Field Nursery Production, Karla M. Addesso, Jason B. Oliver, Nadeer N. Youssef, Donna C. Fare
Agricultural and Environmental Sciences Faculty Research
The flatheaded appletree borer, Chrysobothris femorata (Olivier) (Coleoptera: Buprestidae), and related species are deciduous tree pests. Female beetles prefer to oviposit at tree bases, and larvae tunnel beneath the bark, which weakens or kills young or newly transplanted trees. In the first objective of this study, Discus N/G (2.94% imidacloprid + 0.7% cyfluthrin) applied at six lower-than-labeled rates (0.0, 0.98, 1.97, 3.94, 5.91, and 7.87 ml/cm of average trunk dia.) was evaluated for protection of field-grown maples. A second objective evaluated imidacloprid with and without herbicides to assess the impact of weed competition at the tree base on insecticide effectiveness. …