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Soil quality test available for gardeners and farmers in the Willamette Valley

Gardeners and farmers can do their own soil analysis.

Jan 13, 2009 | News Story

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

Are there pollution standards for bagged soil?

Q: Bagged garden soils have no information about their source or safety. I recently bought bags (big box store) and am concerned about where the soil was actually mined. There were some weird things included in each of the ...

A: View answer | View all featured questions

Getting soil tested in The Dalles

Get your soil tested on Thursdays in The Dalles.

Jul 2018 | Article

Are ashes good for my soil?

Q: Can fireplace ash be used in the garden successfully or is it harmful to the soil?

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Soil Improvement and Cover Crop Resources for Small Farms

Even though different soils have some properties that cannot be changed, such as texture, soil quality can be improved by implementing good management strategies. Soils can be improved for water holding capacity, drainage, structure,...

Apr 2018 | Collection

Is a dog latrine a bad place to grow vegetables?

Q: I'm very concerned about the health hazards of eating food grown in the beds where a dog has pooped. At this point, I could build a fence around the whole garden to stop any further damage, but I'm wondering about the ...

A: View answer | View all featured questions

Trees and Shrubs for Erosion Control

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

Jul 2018 | Collection

Managing Manganese Deficiency in Nursery Production of Red Maple

Discusses the processes of manganese (Mn) reaction in the soil, Mn movement in plants, Mn function in plants, results of studies of Mn in Oregon nursery fields, and management practices to prevent Mn deficiency in field-grown ...

Mar 2006 | OSU Extension Catalog

Fertilizing Shade and Ornamental Trees

Describes how to identify signs of nutrient deficiency in shade and ornamental trees. Discusses the most common soil nutrient deficiencies, types of fertilizer, and fertilization techniques. Offers a simple method, based on tree trunk diameter, for determining how much fertilizer to use.

Aug 2000 | OSU Extension Catalog