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Soil Fertility Management for Organic Crops

Growers need sound information to guide their management decisions on organic vegetable production practices. Each publication in this series addresses a key aspect of organic production practices applicable to all vegetable crops.

Mark Gaskell, Richard Smith, Jeff Mitchell, Steven T. Koike, Calvin Fouche, Tim Hartz, William Horwath, Louise Jackson | Apr 2006 | Online resource

Analyze your garden soil at home with the jar test

Learn how to do a simple test with few materials to see how much of the soil is sand, silt or clay.

Jun 2018 | Article

Monitoring Soil Nutrients in Dryland Systems Using Management Units

Focuses on how to design a soil nutrient monitoring strategy using management units or zones for soil testing and nutrient application. This approach is designed to provide better information to make nutrient ...

Mary Corp, Donald A. Horneck, Don Wysocki, Larry Lutcher | Nov 2006 | Extension Catalog publication Peer reviewed (Orange level)

How do I test my soil?

Q: Hi, I was curious if you had any recommendations on where I can get my soil tested in the Portland metro area. Thanks!

A: View answer | View all featured questions

Soil Texture By Feel Flow Chart

Determine type of soil by feel.

Jul 2017 | Educational document

Should I worry about heavy metals in my garden soil?

What do we know about heavy metals in soil? What do we know about lead exposure through soil and garden plants? What do we know about cadmium and arsenic in soils? What can I do if I’m at risk for heavy metals in my garden soil?

Jul 2016 | Article

Ponding, plugging and pugging: How to care for wet spring soils

Wet soils and soil compaction can reduce plant growth, crop yield and animal utilization of pasture forage. Learn how to identify problems with excessive soil moisture and to know when it's safe to cultivate soils or turn out pasture animals.

Elizabeth Murphy | Jun 2013 | Article

Soil Fertility in Organic Systems: A Guide for Gardeners and Small Acreage Farmers

This publication discusses the many types of fertilizers and soil amendments available for organic plant production. Fertilizer formulations, nutrient availability, and application practices for common organic products are ...

Doug Collins, Carol A. Miles, Craig G. Cogger, Richard T. Koenig | Jul 2013 | Extension Catalog publication Peer reviewed (Orange level)

Best Management Practices for Maintaining Soil Productivity in the Douglas-fir Region

Learn about characteristics that affect productivity, managing mass wasting risk and maintaining adequate nutrient supply in Douglas-fir forest soils.

Alex Dobkowski, Steve Campbell, Jeffrey D. Grizzel, Robert B. Harrison, Ronald L. Heninger, Douglas A. Maguire, Richard E. Miller, Deborah Page-Dumroese, William Scott, Darlene Zabowski | Apr 2011 | Extension Catalog publication Peer reviewed (Orange level)