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Soil pH? Is it Important?

Your soil's pH is an important factor in the success of your garden. Is there a way to manage your soil's pH? Yes!

Curry County Master Gardener™ Program

Episode 6: Soils

In this episode, learn about soil – what it is, different kinds of soil, how soil influences forests and trees, and what forest and woodland managers should know about soil, with Jason O'Brien and Dr. Tom DeLuca.

Jason O'Brien, Tom DeLuca | Mar 2022 | Podcast episode

Soil testing resources

Learn what you need to know to test your farm or garden soil.

Jun 2024 | Collection

Rhododendrons and azaleas need a strong acidic soil

The most effective way to correct an iron deficiency for these plants is to acidify the soil.

Jun 4, 2024 | News story

Add organic matter to improve garden soils

Good organic amendments for garden soils include wood by-products such as sawdust and bark mulch, rotted manure, grass or wheat straw and compost.

Feb 27, 2024 | News story

Willamette Valley Soil Quality Card Guide

Designed to supplement the Willamette Valley Soil Quality Card (EM 8711) by providing additional information on soil quality indicators. For each soil quality indicator, the guide contains a description, explanation of...

Developed by Willamette Valley farmers, Local Soil and Water Conservation Districts, USDA Natural Resources Conservation Service Soil Quality Institute, Oregon State University | Jun 1998 | Extension Catalog publication Peer reviewed (Orange level)

Managing Salt-affected Soils for Crop Production

Salt accumulation in soil can reduce crop yields and affect soil structure. Learn how to evaluate the salts present in soils and to select appropriate management practices to maintain soil health and crop productivity.

María Isabel Zamora Re, Abigail Tomasek, Bryan G. Hopkins, Dan M. Sullivan, Linda Brewer | Apr 2022 | Extension Catalog publication Peer reviewed (Orange level)

Understanding Soil Health and Biota for Farm and Garden

Like sunlight, water and air, soils are the foundation of life on Earth. Learn how soils link plants, the atmosphere, agriculture, food security, health, the economy and the environment.

Shikha Singh, Linda Brewer, Scott Lukas | Jun 2023 | Extension Catalog publication Peer reviewed (Orange level)

Baseline Soil Nitrogen Mineralization: Measurement and Interpretation

Baseline N mineralization refers to plant-available nitrogen release that accompanies the decomposition of soil organic matter. The rate of baseline soil N mineralization is governed by the quantity and quality of ...

Dan M. Sullivan, Amber Moore, Betsy Verhoeven, Linda Brewer | Mar 2020 | Extension Catalog publication Peer reviewed (Orange level)

Acidifying Soil in Landscapes and Gardens East of the Cascades

Explains the importance of soil pH to plant growth, shows symptoms of plants growing in soil with high pH, and discusses how to modify soil to help maples, rhododendrons, blueberries, fruit trees, and other acid-loving plants thrive in your garden and landscape.

Kerry Locke, Donald A. Horneck, John M. Hart, Robert G. Stevens | Sep 2006 | Extension Catalog publication Peer reviewed (Orange level)