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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
25/10/2011 |
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Data da última atualização: |
25/10/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MOREIRA, A.; FAGERIA, N. K. |
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Afiliação: |
ADONIS MOREIRA, CNPSO; NAND KUMAR FAGERIA, CNPAF. |
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Título: |
Changes in soil properties under two different management systems in the Western Amazon. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, New York, v. 42, n. 21, p. 2666-2681, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
Upland soils in the Amazon basin are often highly weathered and therefore possess low plant-available nutrient contents. Soil fertility is principally maintained by geochemical, biochemical, and biogeochemical processes. Within these processes, the soil microbial biomass is responsible for many of the cycles and transformations of nutrients in soils. The aim of this work was to evaluate the changes in soil fertility, in the form of nitrogen (N) and microbial activity, as indicators of the dynamic of carbon (C) with two extractants [irradiation extraction (IE) and IRGA methods], N, and phosphorus (P) in an upland soil area containing a dystrophic Yellow Latosol (Xanthic Ferralsol) in the western Amazon (Brazil) with succession of two plant covers (citrus or pasture) and management. The study was carried out in two chronosequences: primary forest followed by citrus plantations and primary forest followed by pasture. The results showed that pasture has greater capacity to accumulate organic C and total N than either primary forest or citrus plantation. Removing forest to introduce pasture or citrus plantations influences the soil fertility and microbial biomass of C, N, and P in the soil. Under the edaphoclimatic conditions, the irradiation extraction and IRGA methods all proved efficient in determining the soil microbial C activity. In addition, regardless of the depth of soil, the predominant N form is ammonium (NH4 +). |
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Thesagro: |
Fertilidade do solo; Floresta tropical; Fósforo; Manejo do solo; Nitrogênio. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02031naa a2200193 a 4500
001 1904067
005 2011-10-25
008 2011 bl uuuu u00u1 u #d
100 1 $aMOREIRA, A.
245 $aChanges in soil properties under two different management systems in the Western Amazon.
260 $c2011
520 $aUpland soils in the Amazon basin are often highly weathered and therefore possess low plant-available nutrient contents. Soil fertility is principally maintained by geochemical, biochemical, and biogeochemical processes. Within these processes, the soil microbial biomass is responsible for many of the cycles and transformations of nutrients in soils. The aim of this work was to evaluate the changes in soil fertility, in the form of nitrogen (N) and microbial activity, as indicators of the dynamic of carbon (C) with two extractants [irradiation extraction (IE) and IRGA methods], N, and phosphorus (P) in an upland soil area containing a dystrophic Yellow Latosol (Xanthic Ferralsol) in the western Amazon (Brazil) with succession of two plant covers (citrus or pasture) and management. The study was carried out in two chronosequences: primary forest followed by citrus plantations and primary forest followed by pasture. The results showed that pasture has greater capacity to accumulate organic C and total N than either primary forest or citrus plantation. Removing forest to introduce pasture or citrus plantations influences the soil fertility and microbial biomass of C, N, and P in the soil. Under the edaphoclimatic conditions, the irradiation extraction and IRGA methods all proved efficient in determining the soil microbial C activity. In addition, regardless of the depth of soil, the predominant N form is ammonium (NH4 +).
650 $aFertilidade do solo
650 $aFloresta tropical
650 $aFósforo
650 $aManejo do solo
650 $aNitrogênio
700 1 $aFAGERIA, N. K.
773 $tCommunications in Soil Science and Plant Analysis, New York$gv. 42, n. 21, p. 2666-2681, 2011.
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| Registros recuperados : 534 | |
| 123. |  | FAGERIA, N. K.; SANTOS, A. B. dos. Adubação. In: SANTOS, A. B. dos (ed.). Cultivo da soca de arroz irrigado. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2004. p. 79-99.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 132. | | BARBOSA FILHO, M. P.; FAGERIA, N. K. Calagem e adubação. In: SANTIAGO, C. M.; BRESEGHELLO, H. C. de P.; FERREIRA, C. M. (Ed.). Arroz: o produtor pergunta, a Embrapa responde. 2. ed. rev. e ampl. Brasília, DF: Embrapa, 2013. p. 37-73. (Coleção 500 perguntas, 500 respostas).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 133. | | OLIVEIRA, I. P. de; FAGERIA, N. K. Calagem e adubação. In: MOREIRA, J. A. A.; STONE, L. F.; BIAVA, M. (Ed.). Feijão: o produtor pergunta, a Embrapa responde. Brasília: Embrapa Informação Tecnológica, 2003. p. 39-53. (Coleção 500 Perguntas, 500 Respostas).| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 134. | | SANTOS, A. B. dos; FAGERIA, N. K. Calagem e adubação. In: BARRIGOSSI, J. A. F. (Ed.). Recomendações técnicas para a cultura de arroz irrigado no Mato Grosso do Sul. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2009. p. 33-43. (Embrapa Arroz e Feijão. Documentos, 235).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 534 | |
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