Webinar: EAB and Minnesota’s Ash Resource

Tuesday, April 18, 2017, noon – 1:15 p.m. Emerald ash borer threatens Minnesota’s ash resource. This two-part presentation will include an update on the status of EAB in Minnesota and relevant quarantines from Mark Abrahamson, EAB program lead at the Minnesota Department of Agriculture. We’ll then transition to case studies of silvicultural interventions to inform future ash management options. These presentations […]

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Emerald ash borer risk status in Minnesota

Q: What is emerald ash borer? Emerald ash borer (EAB) is a non-native insect transported from Asia to the US and identified in Michigan in 2002. EAB feeds on the tissue of ash trees between the bark and sapwood and disrupting the nutrient and water flow of the tree, eventually killing the tree after several years of feeding in the trees. […]

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Diseases and Insect Pests of Conifers (Evergreen trees) – by species

Douglas-Fir (Pseudotsuga): Armillaria Root Disease USFS Armillaria Root Rot Christmas Tree Pest Manual (USFS) Disease Management Recommendations for Trees and Shrubs (Swiss Needlecast) Dwarfmistletoe of Douglas-fir Insecticide Suggestions to Manage Landscape Tree and Shrub Insects HOW to Identify and Control Rhabdocline and Swiss Needlecasts of Douglas-Fir (USFS) Fir (Abies): Armillaria Root Disease USFS Armillaria Root Rot Christmas Tree Pest Manual […]

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Diseases and Insect Pests of Hardwoods (Broadleaf trees) – by species

Apple/Crabapple (Malus): Aphids on Deciduous Trees and Shrubs Apple Maggot Management Apple Scab Disease Management Recommendations for Trees and Shrubs (Black Rot Canker, Cedar-Apple Rust, Fireblight, Frog-eye Leaf Spot, Powdery Mildew, and Apple Scab) Fireblight Forest Tent Caterpillars in Minnesota Forest Tent Caterpillar (USFS) Gypsy Moth (USFS) Gypsy Moth in Minnesota (MNDNR) Insecticide Suggestions to Manage Landscape Tree and Shrub […]

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Winter cold impacts on EAB: Minnesota data

By Eli Sagor, University of Minnesota Extension A few weeks ago the local and national media ran a number of hopeful stories about the effect of this year’s deep cold on EAB larvae overwintering under ash bark. We got in on it too: Will winter cold save us from emerald ash borer? Sensing perhaps a bit too much optimism, last week Dr. […]

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2014 First Detector workshops scheduled

These workshops are for anyone who wants the latest in-depth information about new invasive pests that affect Minnesota’s landscape trees and urban and rural forests. The 2014 workshops will include material on emerald ash borer, gypsy moth, Asian longhorned beetle, brown marmorated stink bug, thousand cankers disease, tree damage from herbicides, Oriental bittersweet, and managing firewood to prevent transporting invasive pests. […]

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What you need to know to teach others about EAB

On August 27, 2011 Jeff Hahn and Angela Gupta of the University of Minnesota delivered the following presentation through the University of Minnesota Extension’s 2011 Woodland Webinar series. Click here to watch the complete recording now After watching, please complete our quick evaluation form. Related links: The handout Angela Gupta refers to in her presentation (MS Word doc). Emerald ash […]

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UMN Extension to develop an ash management guide for family forest owners

By Julie Miedtke and Angie Gupta, UMN Extension and Mike Albers, MN DNR We know that Emerald Ash Borer (EAB) is a significant invasive forest pest.  EAB has the potential to cause extensive tree mortality in ash and seriously alter forest stand composition in stands with ash.  EAB may also negatively impact traditional forest product economies, plant communities, wildlife and water quality.  In […]

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