Management of potato leafhopper and maple spider mite on nursery grown maples

Abstract:

Potato leafhopper Empoasca fabae (Harris)(Homoptera: Cicadellidae) and maple spider mite Oligonychus aceris (Shimer)(Acarina: Tetranychidae) are important pests of maple trees. Investigations determined how insecticide use and fertilization impacted the abundance of E. fabae and O. aceris on ‘Red Sunset’red maple and ‘Autumn Blaze’Freeman maples. Bifenthrin applications directed against leafhoppers reduced damage to both cultivars, but increased O. aceris on Autumn Blaze. Using a threshold of one leafhopper per branch to trigger pesticide applications protected Red Sunset maples from leafhopper injury. It also prevented outbreaks of O. aceris on Autumn Blaze because few trees reached this density. Two phytoseiid mites, Neoseiulus fallacis (Garman) and Typhlodromus caudiglans (Schuster)(Acarina: Phytoseiidae), and one stigmaeid, Zetzellia mali (Ewing)(Acarina: Stigmaeidae) were identified as …

Año de publicación:

2013

Keywords:

Fuente:

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