The Soil Biology Primer

http://soils.usda.gov/sqi/concepts/soil_biology/biology.html – An introduction to the living component of soil and how that component contributes to agricultural productivity as well as air and water quality.

The Soil and Water Conservation Society

www.swcs.org –  Fostering the art and science of natural resource management for sustainability

Soil Biology Innovations, Inc.

www.soilbiologyinnovations.com - With new advances in microbial technology SBI has developed management tools which rejuvenate the biodiversity of soils and replaces the essential organisms that were lost.

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Soil Foodweb New York

http://soilfoodwebnewyork.com The laboratory measuring the life in your soil. Services include biological testing for soil compost and compost tea.

American Farmland Trust Offers services to stop the loss of farmland and ensure an envromentally and ecomonically sustainable future for farming.