Terra preta

Topic in Gardening courses. By John Eagles.

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File:Terra Preta.jpg

Right a terra preta soil that was human-made out of an infertile soil as shown left.

The most stable humus is that formed from the slow oxidation of black carbon, after the incorporation of finely powdered charcoal into the topsoil. This process is at the origin of the formation of the fertile Amazonian dark earths or Terra preta do Indio.(http://en.wikipedia.org/wiki/Humus)

See also

• Clay-humus complex
• Compost
• Gardening courses
• Humus
• Knowledge base:Gardening
• Micro-organisms in the soil
• Soil

External links

• Terra preta Wikipedia