Terra Preta de Indio
Biochar Soil Management
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Pictures on Amazonian Dark Earths

Characteristic dark color, deep A horizon, and artifacts of an Amazonian dark earth near Manaus, Brazil. Wim Sombroek (ISRIC, The Netherlands) explains the profile characteristics during a recent meeting in Manaus, Brazil.

See tribute to Wim Sombroek (*1934-†2003)


Burial urne below the enriched horizon at a road cut near Manaus, Brazil. Eduardo Neves (University of Sao Paulo) demonstrates the significance of the findings.

Papaya is a typical crop that produces much better on the dark earths than adjacent upland soils.