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Characterization and Classification of Soils under Forest and Pasture in an Agroextractivist Project in Eastern Amazonia Rev. Bras. Ciênc. Solo
Zenero,Mariana Delgado Oliveira; Silva,Laura Fernanda Simões da; Castilho,Selene Cristina de Pierri; Vidal,Alix; Grimaldi,Michel; Cooper,Miguel.
ABSTRACT: Knowledge of soils in the Amazon rainforest is becoming increasingly essential due to dynamics adopted by farmers that substitute forest for pastures, together with growing pressure from diverse segments of society towards adoption of sustainable production systems. The objective of this study was to characterize the soils along two toposequences, one under forest (F) and the other under pasture (P), and to verify how the change in land use influences soil attributes, evaluating their inclusion in the Brazilian Soil Classification System (SiBCS). The soils were sampled in pits located at the summit, backslope and footslope positions for morphological, chemical, physical, and clay mineralogy analysis. The results show that the soils are chemically...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Argissolos; Ultisols; Southeast of Pará; Soil classification; Saprolitic character; Aquic with episaturation (epirredóxico) character.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100314
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Soils and agriculture in central-west and north Brazil Scientia Agricola
Buol,Stanley W..
Modern soil science, spearheaded by research in Brazil has facilitated the utilization of vast areas of previously uncultivated soil long considered unsuitable for human food production into highly productive agricultural land. Naturally acid soils with high contents of aluminum and iron oxides and low CEC values and organic matter contents long considered insurmountable obstacles to crop production in tropical latitudes could be extremely productive. With continued development of the infrastructure needed by commercial agriculture Brazil has the potential to lead the world in its quest to provide food for growing human populations.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado soils; Brazilian Amazon; Latossolos; Oxisols; Ultisols.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000500016
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