Log in to view video

Forgot your username or password? Click here Using a company login? Create a personal login here

Management Tactics for Ambrosia Beetles Attacking Horticultural Tree Crops

If you've already experienced or are at risk for exotic ambrosia beetle attacks, this webinar is critically important for management strategies and prevention measures that will ultimately impact your bottom line for better or for worse.

Exotic ambrosia beetles are among the most destructive pests of trees growing in ornamental nurseries and tree fruit orchards. Beetles tunnel deep into the heartwood of trees, where they farm and consume their fungal symbiont. Pathogenic microorganisms can also be passively introduced into host trees during tunneling and gallery formation. Symptoms resulting from attacks include toothpicks protruding from the tunnel entrance, defensive sap production, wilting, and branch dieback. A wide range of trees are attacked, but thin-barked deciduous trees are generally preferred. Host quality plays an important role during host selection and beetles efficiently locate and preferentially attack physiologically stressed trees that are emitting ethanol. A variety of stressors can induce ethanol; flooding/inadequate drainage, frost injury, and freezing injury have preceded extensive attacks on intolerant trees growing in ornamental nurseries and tree fruit orchards. Monitoring and management tactics will be discussed for these destructive pests. 

Christopher M. Ranger, Ph.D. | Research Entomologist, Horticultural Insects Research Lab — USDA-Agricultural Research Service

Presented on: Wednesday, May 10, 2017

Related Articles

Articles
  • The Magic of Measuring your Marketing Investment

    Today, there are countless ways to measure your marketing effectiveness and take the mystery out ...

    Dig Deeper
  • Fight the (Fire) Blight

    It’s common knowledge that certain bacteria can make people sick, but did you know that bacteria ...

    Dig Deeper
  • Charlie Hall’s Cultivate’19 Keynote Presentation

    AmericanHort Chief Economist Charlie Hall’s Keynote speech at Cultivate’19, Even Greater Uncertai...

    Dig Deeper
View All