♣ Analytical Laboratories and Consultants Serving Agriculture in the Pacific Northwest (Website Database). These links are not WSU verified sources of information. WSU does not provide testing, but the following databases list a big selection of laboratories for testing of soils, water, air, composts, plants, fertilizers, etc, for nutrients, diseases, chemicals, contaminants, etc. ♣ Field Indicators and National and State Lists of Hydric Soils in the United States. ♣ State Soil Surveys or ♣ Soil Survey Online Interactive. This is a work in progress some counties have the complete survey available on line, while others are only partially done. A new addition is on-line access to county soil surveys. ♣ The USDA website has a wealth of information on soil types, classification, maps, soil quality, state soils, soil uses, etc.
Agriculture-Natural Resources Conservation Service. From the Soil Quality Institute, US Dept. A useful guide to the types and roles of soil organisms and soil ecosystems. ♣ The Soil Biology Primer (HTML-Online or order hardcopy). A set of 29 slides that show the major soil types of the Puget Sound area, how they are related to local geology, and their suitability and limitations for different types of land use. ♣ Soils of the Puget Sound Area (PDF-Online, use browser’s vertical scroll bar to page through slides). Explains the role of soil pores in water movement and water holding capacity using a sponge as an analogy. ♣ Water and Soil: the Sponge Analogy for Soil Moisture (Video-Online). ♣ Estimating Soil Texture by Hand, Estimando la Texture del Suelo (PDF-Online). Flowcharts, English and Español versions.
#Ag source labs soil health testing how to
Learn how to estimate the texture of your soil by working a soil sample with your hand. ♣ Determining Soil Texture by Hand (Video-Online). ♣ A Guide to Collecting Soil Samples for Farms and Gardens (PDF/HTML-Online). Fery, M. Shows procedure for collecting soil samples for nutrient analysis from a garden or small farm. ♣ Collecting a Soil Sample (Video-Online).
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