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Nitrogen-fixing trees “eat” rocks, play pivotal role in forest health

By tapping nutrients from bedrock, red alder trees play a key role in healthy forest ecosystems.

Chris Branam | Feb 25, 2019 | News Story

IPM soilborne diseases of cereals

Presentation by Kurtis L. Schroeder, Cropping Systems Agronomist & Plant Pathologist, on Soilborne Diseases of Cereals: Identification and Management for the Integrated Pest Management Website hosted by Umatilla County Extension Service.

Cynthia Ocamb | Mar 2018 | Video

Gardening Publications and Resources

A list of some of our most popular and useful publications.

Jul 2018 | Collection

Turfgrasses and Lawn Care in Eastern Oregon

Today, turfgrass is the single largest irrigated crop in the United States and covers three times the land area of any other cultivated crop. An estimated 40.5 million acres of grasses are planted in residential, commercial and institutional lawns, golf courses, and athletic fields. Learn more about the structure and establishment of turfgrass and how to address weeds, diseases, and insects.

Richard Smiley | Jan 2018 | Article

Trees and Shrubs for Erosion Control

A list of recommended trees and shrubs in Oregon, good for controlling erosion.

Jul 2018 | Collection

I have droopy asparagus, what can I do?

Q: We have had a wonderful patch of Jersey Giant asparagus for the past twenty five years. This year, we have something "infecting" a few of the clumps of our asparagus and we can't identify it. It appears to be some kind of wilt or virus?

A: View answer | View all featured questions

Drought hits Douglas-fir trees hard

Diseases and pests take advantage of trees' weakened condition

Mary Stewart | May 29, 2015 | News Story

My pears have rust, what can I do?

Q: Last year crop was a total failure due to this. This year I have gently removed close to 6 small fruit starts. I just found some leaves on the pear with these spores. I have been treating the soil and the tree with neem granules, for soil, and neem oil spray for leaves and branches and fruit. Spraying about every 2 weeks. Still not under control. Please advise ...

A: View answer | View all featured questions

Streamside planting zones

Describes the three planting zones around a stream.

Jul 2018 | Article

Oregon Ash

Information on the Oregon Ash (Fraxinus latifolia).

Jul 2018 | Article