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Get Actionable Results from a Soil, Plant or Environmental Testing Lab

Learn how to work with an analytical laboratory to get useful results from your plant tissue, soil or water samples.

Shannon Cappellazzi, Clare Sullivan, Gordon B. Jones, Linda Brewer | May 2024 | Extension Catalog publication Peer reviewed (Orange level)

Soil Nutrient Management Resources for Small Farms

Nutrient Management, Managing nutrients, whether it is synthetic fertilizer or manure and other organic fertilizers requires planning. Determining which type of fertilizer to apply, the application rate and timing are key factors in ...

Apr 2018 | Collection

Acidifying Soil for Crop Production West of the Cascade Mountains (Western Oregon and Washington)

Explains the relationship between high soil pH and nutrient deficiencies in blueberries, rhododendrons, azaleas, and other ornamental crops. Color photos illustrate symptoms of pH-induced nutrient deficiency. Presents ...

Donald A. Horneck, John M. Hart, Robert G. Stevens, Steven Petrie, James Altland | Feb 2004 | Extension Catalog publication Peer reviewed (Orange level)

Postharvest Soil Nitrate Testing for Manured Grass and Silage Corn (West of the Cascades)

This publication describes the use of postharvest soil nitrate testing as a tool for assessment of nitrogen (N) management in manured cropping systems west of the Cascade Mountains in Oregon, Washington, and south coastal British Columbia.

Dan M. Sullivan, Craig G. Cogger, Andy I. Bary, Shabtai Bittman, Linda Brewer | Mar 2023 | Extension Catalog publication Peer reviewed (Orange level)

Evaluating Soil Nutrients and pH by Depth in Situations of Limited or No Tillage in Western Oregon

Many nutrients and lime are not mobile in the soil. When applied to the soil surface without tillage, these materials remain in the top 2 inches, especially in production systems that lack tillage. If a soil ...

Nicole Anderson, John M. Hart, Donald A. Horneck, Dan M. Sullivan, Neil W. Christensen, Gene Pirelli | Oct 2010 | Extension Catalog publication Peer reviewed (Orange level)

Acidifying Soil for Blueberries and Ornamental Plants in the Yard and Garden: West of the Cascade Mountain Range in Oregon and Washington

This publication explains the importance of soil acidity to plant growth and discusses how to modify it to ensure that rhododendrons, blueberries, and other acid-loving plants thrive in your garden.

John M. Hart, Donald A. Horneck, Robert G. Stevens, Neil Bell, Craig G. Cogger | Apr 2003 | Extension Catalog publication Peer reviewed (Orange level)

Herbicide-Contaminated Compost and Soil Mix: What You Should Know — and What You Can Do About It

Compost and soil mix products sometimes contain herbicide residue. This residue can damage certain vegetable, fruit and flower crops. The residue likely comes from contaminated hay, grass clippings or manure. Watch ...

Weston Miller, Kaci Buhl | Feb 2021 | Extension Catalog publication Peer reviewed (Orange level)

11 Laura Taylor – Pollinator Restoration in Soil and Water Conservation Districts

Laura Taylor works for the West Multnomah Soil and Water Conservation District. In this episode, find what happens when a local government wants to do something to help pollinator health. As a conservation technician and an ...

Andony Melathopoulos | Jun 2017 | Podcast episode

Reducing Lead Hazard in Gardens and Play Areas

This publication is designed to help homeowners evaluate and manage lead hazard in their landscape or garden. It explains how soils get contaminated with lead, how to test soil for lead contamination and how to reduce exposure to soil lead.

Linda Brewer, Dan M. Sullivan, Pukhraj Deol, Sam Angima | Oct 2016 | Extension Catalog publication Peer reviewed (Orange level)

Using the Nitrogen Mineralization Soil Test to Predict Spring Fertilizer N Rate for Soft White Winter Wheat Grown in Western Oregon

Soft white winter wheat is grown in western Oregon and requires a spring application of nitrogen (N) fertilizer for optimum production. Determining the amount of N to apply has been a challenge for growers. ...

Nicole Anderson, John M. Hart, Neil W. Christensen, Mark E. Mellbye, Michael D. Flowers | Nov 2010 | Extension Catalog publication Peer reviewed (Orange level)