Keep weeds in your fields from becoming herbicide resistant by rotating among herbicides regularly. Learn how and why in this publication. Especially useful is a color-coded chart to help you distinguish among ...
Joan Campbell, Carole Smith, Andy Hulting, Donn Thill |
Oct 2015 |
Extension Catalog publicationPeer reviewed (Orange level)
Bull thistle is native to Europe, western Asia, and North Africa. It probably was introduced in eastern North America during colonial times, as a contaminant in seed or ship ballast. It is now the most ...
The Japanese beetle is an invasive pest that has established itself in parts of the US. In 2016, a breeding population was found in Oregon, which triggered an eradication effort and a call to report sightings.
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.
For farmers and livestock producers on the Oregon Coast, there are many resources available to battle weeds common to the area. Those resources can help identify weeds and offer strategies for controlling them.
Many of the invasive plant species introduced to the United States originated as garden plants. Learn what you need to know to prevent future invasions.
Linda R. McMahan, Joy Jones, Robert Emanuel |
Jul 2011 |
Extension Catalog publicationPeer reviewed (Orange level)