Humic acid

Soil Secrets: Humic Acids
Dr. Melendez, Soil Secrets, Courtesy Daved Yarrow December 2008

The Web site for the Terra Pro Products, has a good online resource for information at http://www.soilsecrets.com/growingsoil.htm

And they've recently posted videos, for people with high bandwidth connections for people to learn more about their products, and building better soils: http://www.soilsecrets.com/

Studies of the Compositions of Humic Acids from Amazonian Dark Earth Soils
Etelvino H. Novotny, Eduardo R. de Azevedo, Tito J. Bonagamba, Tony J. F. Cunha, Beta E. Madari, Vin

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