Terra Preta
Corn Test Plots
EPRIDA, Athens, Georgia
, July 2005

A narrow strip of soil along a sidewalk was tilled behind the EPRIDA research facility. This was divided in three sections: control (no biochar), commercial charcoal, EPRIDA low-temperature biochar. All three sections got conventional NPK fertilizers. Before mid-summer, both char-enriched sections showed clear advantage. EPRIDA-process biochar showed the best gain.

Amazon Forest Soils


The Earth Renewal and Restoration Alliance www.ancientforests.us www.carbon-negative.us www.nutrient-dense.info 2/14/2009