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| Registros recuperados : 77 | |
| 13. |  | TORMENA, C.A.; ROLOFF, G.; SÁ, J.C.M. Propriedades físicas do solo sob plantio direto influenciadas por calagem, preparo inicial e tráfego. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 22, n. 2, p. 301-309, abr./jun. 1998.| Biblioteca(s): Epagri-Sede. |
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| 17. | | SILVA, Á. P. da; TORMENA, C. A.; FIDALSKI, J.; IMHOFF, S. Funções de pedotransferência para as curvas de retenção de água e de resistência do solo à penetração. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 32, n. 1, p. 1-10, 2008.| Biblioteca(s): Epagri-Sede. |
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| 18. | | BLAINSKI, E.; TORMENA, C. A.; FIDALSKI, J.; GUIMARÃES, R. M. L. Influência dos sistemas de uso e manejo na curva de resistência do solo à penetração de um Latossolo Vermelho distroférrico. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 31., 2007, Gramado, RS. [Anais...]. Viçosa, MG: SBCS, 2007.| Biblioteca(s): Epagri-Sede. |
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| 19. | | PINTRO, J. C.; INOUE, T. T.; TORMENA, C. A.; COSTA, A. C. S. da; SENGIK, E. Influencia de diferentes doses de corretivo e de camadas de correcao da acidez de um neossolo litolico distrofico na producao de materia seca de milho. Acta Scientiarum, Maringa, v. 22, n. 4, p. 1031-1035, oct. 2000.| Biblioteca(s): Epagri-Sede. |
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| 20. | | VEIGA, M. P. da; MARTINS, S. S.; TORMENA, C. A.; SILVA, O. H. da. Influencia da mata ciliar sobre a qualidade da agua do Ribeirao Aurora, no municipio de Astorga, Parana. Arquivos de Ciencias Veterinarias e Zoologia da Unipar, Umuarama, v.6, n. 2, p. 149-152, jul./dez. 2003.| Biblioteca(s): Epagri-Sede. |
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| Registros recuperados : 77 | |
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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
04/04/2011 |
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Data da última atualização: |
04/04/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
-- - -- |
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Autoria: |
GUIMARÃES, R. M. L.; TORMENA, C. A.; ALVES, S. J.; BLAINSKI, E. |
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Afiliação: |
Epagri |
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Título: |
Tensile strength friability and organic carbon in an Oxisol under crop-livestock system. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, SP, v. 66, n. 4, p. 499-505, 2009. |
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Idioma: |
Inglês |
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Notas: |
ISSN, 01039016 |
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Conteúdo: |
The crop-livestock system can promote soil compaction in surface layers, mainly due to
animal trampling. However, plants and their root growth, in interaction with animal trampling, can decrease the deleterious changes in soil structure caused by this system. Up to the present time, the physical soil modifications in crop-livestock systems, including oat and ryegrass crops for winter animal forages are unknown. The objective of this study was to quantify and to relate tensile strength, friability and soil organic carbon in an Oxisol under a crop-livestock system. The study was conducted in Campo Mourão - Paraná, Brazil. Four forage heights were used for the winter forages: 7, 14, 21 and 28 cm. For each forage height, five soil blocks were randomly collected from each layer of 0 - 0.1, 0.1 - 0.2 and 0.2 - 0.3 m of depth. The increase in carbon content promotes an increase in soil tensile strength at the 0.1 - 0.2 m soil depth, this layer having the highest values for tensile strength. The forage height of 21 cm was found to be the best height for soil friability, and the soil was very friable at this height. Despite a decrease in friability in the upper layers of the soil, the crop-livestock system was not found to be a limiting factor for the subsequent cultivation of annual crops.
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Categoria do assunto: |
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Marc: |
LEADER 01682naa a2200121 a 4500
001 1075357
005 2011-04-04
008 2009 bl uuuu u00u1 u #d
245 $aTensile strength friability and organic carbon in an Oxisol under crop-livestock system.
260 $c2009
500 $aISSN, 01039016
520 $aThe crop-livestock system can promote soil compaction in surface layers, mainly due to animal trampling. However, plants and their root growth, in interaction with animal trampling, can decrease the deleterious changes in soil structure caused by this system. Up to the present time, the physical soil modifications in crop-livestock systems, including oat and ryegrass crops for winter animal forages are unknown. The objective of this study was to quantify and to relate tensile strength, friability and soil organic carbon in an Oxisol under a crop-livestock system. The study was conducted in Campo Mourão - Paraná, Brazil. Four forage heights were used for the winter forages: 7, 14, 21 and 28 cm. For each forage height, five soil blocks were randomly collected from each layer of 0 - 0.1, 0.1 - 0.2 and 0.2 - 0.3 m of depth. The increase in carbon content promotes an increase in soil tensile strength at the 0.1 - 0.2 m soil depth, this layer having the highest values for tensile strength. The forage height of 21 cm was found to be the best height for soil friability, and the soil was very friable at this height. Despite a decrease in friability in the upper layers of the soil, the crop-livestock system was not found to be a limiting factor for the subsequent cultivation of annual crops.
773 $tScientia Agricola, Piracicaba, SP$gv. 66, n. 4, p. 499-505, 2009.
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