Most “sick tree” problems can be traced back to underlying stresses that have reduced the tree's vigor, making it more vulnerable to diseases or insect pests.
Pacific Northwest blueberry growers must identify and control a number of bacterial and fungal diseases in order to ensure the highest yields. Fortunately, only a few of the diseases that occur on highbush blueberry in this region cause significant losses when left unchecked.
Jay W. Pscheidt, Jerry Weiland |
Mar 2015 |
Article
Excessive summer irrigation of oak and madrone trees may promote fungal diseases such as the oak root fungus (aka armillaria root disease) and crown rot.
This publication represents a synthesis of what is known about the history, biology, ecology and management of western juniper. This species occupies 9 million acres in central and eastern Oregon, northeastern ...
Richard Miller, Jon Bates, Tony J. Svejcar, Fred B. Pierson, Lee Eddelman |
Jun 2005 |
Extension Catalog publicationPeer reviewed (Orange level)
Poisonous plants are a major cause of economic loss to the livestock industry. Two poisonous plants common to Oregon are poison hemlock and Western water hemlock. Ingestion of either by humans or livestock typically results in death.