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Soil Survey History



What is Soil?

"Soil" is material capable of supporting plant life. Soil forms through a variety of soil formation processes, and includes weathered "parent material" combined with dead and living organic matter and air. Soils are vital to all life on Earth because they support the growth of plants, which supply food and oxygen and absorb carbon dioxide and nitrogen. (From Wikipedia)

The California State Soil

The San Joaquin soil became the official State Soil of California in 1997 with the help of some middle school students and their teacher who utilized the process as part of an integrated curriculum in his classroom. See the "California State Soil" Web page for additional history, soil profile information, photo, map, brochure, and poster link access.

Dig It! Secrets of Soil Exhibit from the Smithsonian

The Soil Science Society of America (SSSA) worked with the Smithsonian Institution's National Museum of Natural History in Washington, DC, to plan a soils exhibit as part of their Forces of Change Program. The exciting "Dig It" exhibit displayed at the Smithsonian for an extended period due to its popularily. It includes a display of state soil monoliths and an educational, interactive section to help the museum's more than six million visitors a year understand how soil is intricately linked to the health of humanity, the environment and the planet. Now, PSSAC has played an active role in bringing the Dig It! display to The California Museum. To learn more about this project, visit the Dig It! web site.

Help support the Dig It! exhibit at The California Museum with a Contribution.





Senate Resolution 440

The 110th United States Senate passed Resolution 440, a resolution recognizing soil as an essential natural resource, and soil scientists as playing a critical role in managing our Nation's soil resources.

California Universities with Soil Science Courses


On-Line Soil Resources


Other Soils Organizations

soilresources.htm updated September 8, 2014
    Dedicated to the education, application, and advancement of soil science in California.    
Outline of California map, with inset horizons of San Joaquin State Soil

Professional Soil Scientists Association of California
P.O. Box 5972
Vacaville, CA 95696
Phone: (707) 447-2135 Ext. 2

Kim Chang building a San Joaquin State Soil monolith
Copyright © 2011 PSSAC
PSSAC is affiliated with the American Registry of Certified Professionals in Agronomy, Crops and Soils (ARCPACS).
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