A soil nitrate test measures the concentration of nitrate in the soil at a specific moment in time, including nitrate originating from organic inputs, fertilizer, and soil organic matter. This publication describes how to use ...
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.
A guide for how to collect and where to get a sample analyzed for plant diseases.
Useful information about Western Hemlock-Douglas Fir Forest, Prairie, Scrub-Shrub Wetlands, and Mixed Deciduous Forest/Steep Dry Slope.
If you grow cherries, mulberries and peaches or berries such as strawberries, raspberries and blueberries, you can help reduce the effect of spotted wing drosophila with a new online OSU Extension publication, EM 9026.