| Journal: | Acta scientiarum. Agronomy |
| Database: | PERIÓDICA |
| System number: | 000460140 |
| ISSN: | 1679-9275 |
| Authors: | Silva Neto, Eduardo Carvalho da1 Pereira, Marcos Gervasio1 Frade Junior, Elizio Ferreira2 Silva, Sandra Bezerra da2 Carvalho Junior, João Andrade de3 Santos, José Carlos dos4 |
| Institutions: | 1Universidade Federal Rural do Rio de Janeiro, Departamento de Solos, Seropédica, Rio de Janeiro. Brasil 2Universidade Federal do Acre, Cruzeiro do Sul, Acre. Brasil 3Universidade Estadual Paulista, Departamento de Energia, Guaratinguetá. Brasil 4Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Combustão e Propulsão, Cachoeira Paulista, São Paulo. Brasil |
| Year: | 2019 |
| Volumen: | 41 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | . 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 |
| Disciplines: | Agrociencias, Biología |
| Keyword: | Fitotecnia, Genética, Análisis estadístico |
| Keyword: | Amazonian agroecosystem, Soil fertility, Cycling of nutrients, Soil management, Brasil |
| Full text: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
