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Research article - Peer-reviewed, 2022

Anthropogenic Soil Experiment in Brazil Amazon: Changes in Soil Physical Properties by Organic Residues

de Souza, Luma Castro; de Lima, Herdjania Veras; Rodrigues, Sueli; Torres, Lorena Chagas; Kern, Dirse Clara


Archeological Dark Earths, known in the Brazilian Amazon as Terra Preta de indio are fertile and structured soils considered as a potential model for sustainable agriculture. In order to recreate these soils a field experiment, named New Dark Earth, was set up in 2003 in the municipality of Tailandia, state of Para, northern Brazil. The treatments consisted of the application of organic residues (wastes from local industries) in a loamy sand soil: cattle bones, wood charcoal, shredded wood blades, and the control. The objective of this study was to evaluate the effect of these residues on soil physico-hydrological properties. The results showed that the residues did not significantly increase the soil organic carbon content. Only the wood charcoal resulted in some improvements in soil physico-hydrological properties, such as lower soil bulk density and higher total and microporosity, which was mainly attributed to the high porosity of this material. Consequently, it also presented more available water. For now, it was concluded that despite the three residues are widely available in the region, the use of wood charcoal seems to be the best alternative to bring improvements to the soil physical properties, mainly soil water retention. However, more studies need to be carried out.


Anthropogenic soil; biochar; soil physical quality; Amazonian soils

Published in

Communications in Soil Science and Plant Analysis
2022, volume: 53, number: 4, pages: 533-543

Authors' information

de Souza, Luma Castro
Federal Rural University of the Amazon
de Lima, Herdjania Veras
Federal Rural University of the Amazon
Rodrigues, Sueli
Universidade Federal do Piaui
Swedish University of Agricultural Sciences, Department of Soil and Environment
Kern, Dirse Clara
Museu Paraense Emilio Goeldi

Sustainable Development Goals

SDG15 Life on land
SDG2 Zero hunger

UKÄ Subject classification

Soil Science

Publication Identifiers


URI (permanent link to this page)