Oregon State University

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Event Details

Pine Dieback (Diplodia) Tour

Eastern Oregon

Thursday, May 9, 2013 10:00 AM - 12:00 PM

We have noticed an increased amount of branch dieback in our ponderosa pines along the Grande Ronde and Wallowa Valley fringes, including an especially hard hit area along the Grande Ronde River near Troy.  Symptoms are a few to numerous branches that have died throughout the tree crown.  What is going on?  Some of this damage is related to gall rust, but much of it is apparently due to a pine shoot blight disease, Diplodia.

This tour is open to anyone interested in learning more about this disease (as well as other diseases/insects as we find them) and its impact on tree growth and mortality.  We will have serveral forest disease and insect specialists on the tour to discuss indentification, how the disease spreads, its impact on tree health and susceptibility to other damaging agents such as bark beetles.  We'll also discuss possible management solutions.

Specilists on hand for the tour include, Brent Oblinger, forest pathologist, USDA Forest Service, Bend, OR; Dave Shaw, OSU Forest Health Specialist, Corvallis, OR; Rob Flowers, ODF Forest Entomologist, Salem, OR; Craig Schmidt, forest pathologist, USDA Forest Service, LaGrande, OR: and Lia Spiegel, forest entomologist, USDA Forest Service, LaGrande, OR.

For those travelling from LaGrande, we will be carpooling and leaving the Ag Service Center, 10507 N McAlister Rd. (across from Bronson Lumber in Island City) at 7:30 AM on May 9th.

Off Campus
Meet at Wildcat Bridge, Troy, OR
OUS Extension Service Union County
Paul.Oester at oregonstate.edu
Union County Extension
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