This report includes preliminary data for the second of a three-year study. Since this year was a record drought year, results could vary from a normal rainfall year. Finalized data and observations will be released in future as peer-reviewed studies, reports, and extension articles. For more information, please visit the RDFA project page. .
Currently, the emerald ash borer has been found in trees only in Washington County, where a quarantine prohibits moving ash (Fraxinus) or fringe tree (Chionanthus) wood in or out of the area.
Eastern Oregon’s rangelands are diverse due to different soils, topography and climate. Ranchers and land managers who view the landscape as a collection of ecological sites can better predict how vegetation and other resources ...
Douglas-fir trees are dying at a record pace in southwest Oregon. Learn what steps you can take to preserve forest health and improve wildfire resiliency in a warming climate.
Cool-season perennial and annual forages often struggle during the heat of summer. Fortunately, there are some strategies to consider — including planting drought-tolerant forages, warm-season grasses and annual legumes.
Collection of forage resources, mostly for Coastal Oregon regions. Includes studies on fiber digestibility, phosphoric soil, rations, and cost/benefit of growing and buying locally grown forages.
Christmas trees planted in unirrigated sites depend on the weather for survival. A research trial set out to find factors that would help seedlings survive during drought years. Results were mixed.
This is a bilingual publication (English and Spanish) for landscape workers and the public to help them protect Oregon birch trees from this damaging pest. Includes insect identification, host plants, signs and ...
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.