Discusses how to identify and control Pacific poison-oak and western poison-ivy, and how to prevent exposure to the plants' oily substance, urushiol, which can cause an allergic contact dermatitis.
Brooke Edmunds, Lauren Grand, Alicia Christiansen, Andy Hulting |
Nov 2022 |
Extension Catalog publicationPeer reviewed (Orange level)
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)
This publication offers an integrated approach to effective weed management in Christmas trees, incorporating diverse strategies and practices to keep weed populations off balance. It includes strategies for using ...
Ed Peachey, Chal Landgren, Tim Miller-Morgan |
Dec 2017 |
Extension Catalog publicationPeer reviewed (Orange level)
Photo by Judith Ann Kowalski (Cropped from original)
The Extension Service Christmas tree specialist has answered thousands of questions over the years. Those questions usually lead to more questions that require careful observation and a detective's mindset to solve.
Damage assessments after the historic heat wave of June 2021 in Oregon provided lessons for the state's Christmas tree growers. Those assessments showed how damage varied by type of tree and location of farms.
A study of the WeiSEL, manufactured by Zurn Harvesting of Germany, shows that the new plot combine yield measurement system is a less expensive and reliable alternative to manual yield collection methods.
Christina Hagerty, Duncan Kroese, Grayson Namdar, Larry Lutcher, Chuntao Yin |
Jun 2022 |
Extension Catalog publicationPeer reviewed (Orange level)