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Provedor de dados:  Agronomy
País:  Brazil
Título:  Temporal evaluation of soil chemical attributes after slash-and-burn agriculture in the Western Brazilian Amazon
Autores:  Silva Neto, Eduardo Carvalho da
Pereira, Marcos Gervasio
Frade Júnior, Elizio Ferreira
Silva, Sandra Bezerra da
Carvalho Júnior, João Andrade
Santos, José Carlos dos
Data:  2019-03-13
Ano:  2019
Palavras-chave:  Amazonian agroecosystem
Soil fertility
Cycling of nutrients
Soil management
Resumo:  In Amazonia, the main causes of deforestation are systems based on slash-and-burn agriculture. The objective of this work was to evaluate temporal changes in the soil chemical attributes after the vegetation has been slashed and burned in an area of native forest in the Western Amazon. For this study, four hectares of forest in Cruzeiro do Sul, State of Acre, Brazil, was slashed and burned. The soil in the study area was classified as Ultisol (Argissolo Amarelo Distrófico típico). Soil samples were collected over the course of one year, the first one being collected 16 hours after the burn and the others at 30, 60, 90, 150, 210, 270, and 360 days after the burn. The soil surface layers were more sensitive to fire action. Ashes from vegetation burn increased pH values, basic cations, and C values only in the first months, resulting in higher basal saturation values (V%). The practice of slash-and-burn after 12 months resulted in lower values of pH, Ca, Mg, K, and P and higher values of Al and H, as well as saturation by aluminum in the soil, indicating this practice contributes to the reduction of soil fertility.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês

Editor:  Universidade Estadual de Maringá
Formato:  application/pdf

Fonte:  Acta Scientiarum. Agronomy; Vol 41 (2019): Publicação Contínua; e42609

Acta Scientiarum. Agronomy; v. 41 (2019): Publicação Contínua; e42609


Direitos:  Copyright (c) 2019 Acta Scientiarum. Agronomy

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