Earthfort gives you the tools to unlock the productivity in your soil! We are the premier soil science business whose expertise is managing soil biology for optimal plant growth. Our lab has over a decade of experience providing detailed soil biology profiles for land managers across many industries.  Our business has also created custom products that help revitalize tired, worn out soils and boost the effectiveness of composts and teas. Let our experience help guide your practices, evaluation of disease pressures and fertility requirements.  We firmly believe, if you can measure it, you can manage it!


Earthfort assists your land management goals in three ways:


  • Educate – Earthfort provides training and workshops about the role soil microbiology has in plant health. The workshops are offered both in-person and over the internet.


  • Evaluate - The Earthfort lab processes soil samples from around the world. If you can measure it, you can manage it.  The results of the soil evaluation will help determine how to manage the soil microbes to meet the needs of the target crop.


  • Remediate – Earthfort technology provides the tools to manage soil health. Soil ProVide returns beneficial microbes to the soil. Soil ReVive encourages beneficial microbial growth.

Our History:

Earth Fortification Supplies Company (a.k.a. Earthfort) was founded in 2004 in Corvallis, Oregon by Matt Slaughter and Dr. Elaine R. Ingham to address the needs of Soil Foodweb testing clients on how to repair their damaged soils.  Starting out in the back office of the Soil Foodweb Lab, Earthfort grew quickly, testing and reselling soil and compost related products that were commercially available.   In 2005 we relocated into a larger facility to accommodate the growing level of sales.  Later that same year, Earthfort took over full time management of the Lab, creating Soil Foodweb Oregon, LLC.  As the company continued to grow, it began developing its own product lines.  In 2007 Dirt Simple Compost Tea Brewers were created.  In 2010, after 7 years of development, Soil ProVide was created, followed shortly by Soil ReVive.  In 2011 Matt Slaughter bought out Elaine Ingham and is now the sole owner of Earthfort, at that time the Lab was renamed to Earthfort Labs.


Today, Earthfort spans the globe, directly working with clients from around the world.  We continue to grow and fulfill our mission to help people restore the health of their soils:  through workshops and webinars providing education, evaluating soil performance in our laboratory, and with our proprietary products, ProVide and ReVive.  We look forward to working with and serving you.


Contact Us:

Earthfort labs and offices are located in Corvallis, Oregon – the heart of the Willamette Valley.



635 SW Western Blvd

Corvallis, OR 97333

(541) 257-2612