Scientists have developed a new approach to modeling potentially drought-prone soils in Pacific Northwest forests, which could aid natural resource managers to prepare forested landscapes for a changing climate.
Predicting Nitrogen Availability from Organic Amendments: laboratory, Field, and Computer Stimulation
A study to improve the ability to predict nitrogen availability from organic soil amendments, including improved accuracy of Nitrogen availability estimates, to target amendment application rates to meet crop N needs.
Applied research to increase survival of noble fir Christmas tree seedlings during drought years, North Willamette Research and Extension Center.
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.
There are probably few plants that are more strongly identified with this area or are held in greater affection than the madrone tree.
At times we see many of our cool-season perennial and annual forages looking stressed and growing very slow as they struggle with heat and no rain. The hot, dry conditions we sometimes experience in western Oregon have many ...
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.