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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
13/03/2014 |
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Data da última atualização: |
14/03/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MOREIRA, A.; MORAES, L. A. C.; ZANINETTI, R. A.; CANIZELLA, B. T. |
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Afiliação: |
ADÔNIS MOREIRA, CNPSO; LARISSA ALEXANDRA CARDOSO MORAES, CNPSO; REAN AUGUSTO ZANINETTI, UFAM; BRUNA TROVO CANIZELLA, UEL. |
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Título: |
Phosphorus dynamics in the conversion of a secondary forest into a rubber tree plantation in the Amazon rainforest. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Soil Science, v. 178, n. 11, p. 618-625, Nov. 2013. |
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DOI: |
10.1097/SS.0000000000000025 |
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Idioma: |
Inglês |
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Conteúdo: |
During the past several decades, extensive areas of the humid tropical Amazon have been cleared for the introduction of pasture or subsistence farming and later abandoned after a few years of use. An option for recovering these areas is the planting of rubber trees because it is a native tree that could restore conditions similar to those existing before the clearing. In addition, the high economic value of natural rubber is a source of income for small producers. In soil management under the Amazon conditions, low phosphorus (P) has been the most limiting factor. Under natural conditions, P is provided to the plants almost exclusively by organic matter mineralization. The aim of this study was to evaluate a chronosequence of reforestation with rubber trees planted at different times in cleared areas, with primary forest as a reference. The amounts of litter and P content in the plant, in the litter, and in soil, as well as biological indicators (acid and alkaline phosphatase and P microbial biomass) associated with the P cycle in a Xanthic Ferralsol (Oxisol), in the Central Amazon were assessed. Rubber tree growth resulted in changes in total organic carbon, with an increase of 104.6% in the 45-year-old rubber trees compared with the 6-year-old rubber tree plantation. This was also observed for acid and alkaline phosphatase activities, which were close to those of the primary forest. The formation of litter and the P content of the microbial biomass in soil were higher in rubber areas. The P immobilized into microbial biomass was the main reserve to meet the plant's nutritional demand for phosphorus. The content of P available in the soil, regardless of the extractants (Mehlich 1, Mehlich 3, and Bray 1) and the age of vegetation cover were below the levels indicated as appropriate. MenosDuring the past several decades, extensive areas of the humid tropical Amazon have been cleared for the introduction of pasture or subsistence farming and later abandoned after a few years of use. An option for recovering these areas is the planting of rubber trees because it is a native tree that could restore conditions similar to those existing before the clearing. In addition, the high economic value of natural rubber is a source of income for small producers. In soil management under the Amazon conditions, low phosphorus (P) has been the most limiting factor. Under natural conditions, P is provided to the plants almost exclusively by organic matter mineralization. The aim of this study was to evaluate a chronosequence of reforestation with rubber trees planted at different times in cleared areas, with primary forest as a reference. The amounts of litter and P content in the plant, in the litter, and in soil, as well as biological indicators (acid and alkaline phosphatase and P microbial biomass) associated with the P cycle in a Xanthic Ferralsol (Oxisol), in the Central Amazon were assessed. Rubber tree growth resulted in changes in total organic carbon, with an increase of 104.6% in the 45-year-old rubber trees compared with the 6-year-old rubber tree plantation. This was also observed for acid and alkaline phosphatase activities, which were close to those of the primary forest. The formation of litter and the P content of the microbial biomass in soil were higher in r... Mostrar Tudo |
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Thesagro: |
Hevea Brasiliensis; Seringueira. |
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Thesaurus Nal: |
Rubber. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
null
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Registro original: |
Embrapa Soja (CNPSO) |
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| Registros recuperados : 47 | |
| 1. |  | ALVES, H. M. R.; VIEIRA, T. G. C.; VOLPATO, M. L. M.; SOUZA, V. C. O. Assessment of changes, in space and time, in the coffee lands of Minas Gerais state, in Brazil. In.: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 23., 2010, Bali, Indonesia.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 3. | | VIEIRA, T. G. C.; ALVES, H. M. R.; VOLPATO, M. L. M.; SOUZA, V. C. O. Application of artificial neural networks (ANN) in the analysis and classification of coffee areas in the region of Machado, state of Minas Gerais, Brazil. In.: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 23., 2010, Bali, Indonesia.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 4. | | VIEIRA, T. G. C.; ALVES, H. M. R.; VOLPATO, M. L. M.; SOUZA, V. C. O. Spacialization and dynamics of coffee production in Minas Gerais state, Brazil, between 1990 and 2009 using geotechnologies. In.: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 23., 2010, Bali, Indonesia.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 9. | | ALVES, H. M. R.; VIEIRA, T. G. C.; SOUZA, V. C. O.; BERTOLDO, M. A.; ANDRADE, H.; BERNARDES, N. Análise da dinâmica de regiões cafeeiras em Minas Gerais em relação ao ambiente. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 4., 2005, Londrina. Anais... Brasília, DF: Embrapa Café, 2005.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 11. | | BERTOLDO, M. A.; VIEIRA, T. G. C.; ALVES, H. M. R.; SOUZA, V. C. O.; BERNARDES, N. Avaliação de áreas cafeeiras no Município de Campo do Meio em Minas Gerais, utilizando imagens CBERS e TM-LANDSAT. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 4., 2005, Londrina. Anais... Brasília, DF: Embrapa Café, 2005.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 16. | | BERTOLDO, M. A.; VIEIRA, T. G. C.; ALVES, H. M. R.; SOUZA, V. C. O.; BERNARDES, N. Monitoramento e dinâmica da cultura cafeeira na região de Três Pontas, sul de Minas Gerais. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 4., 2005, Londrina. Anais... Brasília, DF: Embrapa Café, 2005.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 18. | | VOLPATO, M. M. L.; SANTOS, W. J. R.; ALVES, H. M. R.; VIEIRA, T. G. C.; SOUZA, V. C. O. NDVI do produto MOD13Q1 e sua relação com a pluviosidade acumulada, em áreas cafeeiras de Três Pontas, MG. In: CONGRESSO BRASILEIRO DE PESQUISAS DE CAFEEIROS, 35., 2009, Araxá.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 20. | | VIEIRA, G. C.; ALVES, H. M. R.; SILVEIRA, S. P. S.; BERNARDES, T.; SOUZA, V. C. O. Estruturação, modelagem e implantação do banco de dados geográfico para cafeicultura do sul de Minas, utilizando o modelo de dados OMT-G (Object Modelling Technique - Geographic). In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 5., 2007, Águas de Lindóia, SP. Anais... Brasília, DF: Embrapa Café, 2007.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| Registros recuperados : 47 | |
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