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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
23/06/2000 |
Data da última atualização: |
09/06/2018 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
FERREIRA, J. J.; VIANA, A. C.; VALENTE, J. O. |
Afiliação: |
EMBRAPA-CNPMS. |
Título: |
Milho de alta umidade versus milho seco no desempenho de novilhos nelore confinados. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE MILHO E SORGO, 23., 2000, Uberlândia, MG. A inovação tecnológica e a competividade no contexto dos mercados globalizados: resumos expandidos. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Uberlândia: Universidade Federal de Uberlandia, 2000. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Palavras-Chave: |
Maize; Moisture contents. |
Thesagro: |
Confinamento; Consumo; Ganho de Peso; Milho; Novilho; Umidade; Zea Mays. |
Thesaurus Nal: |
feedlots; steers; weight; weight gain. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/33495/1/Milho-alta.pdf
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Marc: |
LEADER 00981nam a2200289 a 4500 001 1483915 005 2018-06-09 008 2000 bl uuuu u00u1 u #d 100 1 $aFERREIRA, J. J. 245 $aMilho de alta umidade versus milho seco no desempenho de novilhos nelore confinados.$h[electronic resource] 260 $aIn: CONGRESSO NACIONAL DE MILHO E SORGO, 23., 2000, Uberlândia, MG. A inovação tecnológica e a competividade no contexto dos mercados globalizados: resumos expandidos. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Uberlândia: Universidade Federal de Uberlandia$c2000 300 $c1 CD-ROM. 650 $afeedlots 650 $asteers 650 $aweight 650 $aweight gain 650 $aConfinamento 650 $aConsumo 650 $aGanho de Peso 650 $aMilho 650 $aNovilho 650 $aUmidade 650 $aZea Mays 653 $aMaize 653 $aMoisture contents 700 1 $aVIANA, A. C. 700 1 $aVALENTE, J. O.
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
27/09/2021 |
Data da última atualização: |
27/09/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
BERTOLINO, A. V. F. A.; FERNANDES, N. F.; MIRANDA, J. P. L.; SOUZA, A. P.; LOPES, M. R. S.; PALMIERI, F. |
Afiliação: |
ANA V. F. A. BERTOLINO, UERJ; NELSON F. FERNANDES, UFRJ; JOÃO P. L. MIRANDA, UFRJ; ANDRÉA P. SOUZA, UERJ; MARCEL R. S. LOPES, UFRJ; FRANCESCO PALMIERI, CNPS. |
Título: |
Effects of plough pan development on surface hydrology and on soil physical properties in Southeastern Brazilian plateau. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Journal of Hydrology, v. 393, n. 1/2, p. 94-104, Oct. 2010. |
DOI: |
https://doi.org/10.1016/j.jhydrol.2010.07.038 |
Idioma: |
Inglês |
Conteúdo: |
Conventional tillage may impose changes in soil physical properties that lead to a decrease in soil physical quality. Although plough pan formation is considered to be an important consequence of conventional tillage practices in Southeastern Brazil, few studies have focused on its hydrological consequences. Detailed investigations in two experimental plots located in the hilly landscape of Serra do Mar close to Rio de Janeiro city were carried out to characterize the changes in soil physical properties and in soil hydrology due to plough pan formation. Conventional (CT) and minimum tillage (MT) practices were implemented in two plots for 3 years and soil matric potential (SMP) was monitored in each plot via nests of tensiometers and Watermark (R) sensors installed at different depths. Undisturbed soil blocks were collected for micromorphological analyses to quantify the total pore space in soils under CT and MT systems, and in soils under natural tropical forest. Results suggest that soils under the CT system developed a plough pan layer at about 20 cm depth that had 44% less total porosity as compared to surface conditions. It is shown that soils under the CT system tended to stay saturated for longer periods of time after each rainfall event. Besides, during intense rainy periods soils under the CT system may develop hydrologic conditions that favor lateral flows while soils under the MT system were still draining. Such hydrological responses may explain why average soil erosion rates measured for individual rainfall events under the CT system were about 2.5 times greater than the ones observed at MT. The results attested that conventional tillage in this area generated modifications in soil fabric, especially in pore-size distribution and connectivity, which induced important changes in soil hydrology and soil erosion. The agricultural practices used in this area, associated with the local steep hillslopes and intense rainfall events, are definitely not adequate and require the introduction of soil and water conservation practices in order to become sustainable. MenosConventional tillage may impose changes in soil physical properties that lead to a decrease in soil physical quality. Although plough pan formation is considered to be an important consequence of conventional tillage practices in Southeastern Brazil, few studies have focused on its hydrological consequences. Detailed investigations in two experimental plots located in the hilly landscape of Serra do Mar close to Rio de Janeiro city were carried out to characterize the changes in soil physical properties and in soil hydrology due to plough pan formation. Conventional (CT) and minimum tillage (MT) practices were implemented in two plots for 3 years and soil matric potential (SMP) was monitored in each plot via nests of tensiometers and Watermark (R) sensors installed at different depths. Undisturbed soil blocks were collected for micromorphological analyses to quantify the total pore space in soils under CT and MT systems, and in soils under natural tropical forest. Results suggest that soils under the CT system developed a plough pan layer at about 20 cm depth that had 44% less total porosity as compared to surface conditions. It is shown that soils under the CT system tended to stay saturated for longer periods of time after each rainfall event. Besides, during intense rainy periods soils under the CT system may develop hydrologic conditions that favor lateral flows while soils under the MT system were still draining. Such hydrological responses may explain why average soil ... Mostrar Tudo |
Palavras-Chave: |
Plough pan. |
Thesagro: |
Compactação do Solo; Erosão do Solo; Hidrologia. |
Thesaurus NAL: |
Soil compaction; Soil erosion; Soil micromorphology. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02984naa a2200277 a 4500 001 2134793 005 2021-09-27 008 2010 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.jhydrol.2010.07.038$2DOI 100 1 $aBERTOLINO, A. V. F. A. 245 $aEffects of plough pan development on surface hydrology and on soil physical properties in Southeastern Brazilian plateau.$h[electronic resource] 260 $c2010 520 $aConventional tillage may impose changes in soil physical properties that lead to a decrease in soil physical quality. Although plough pan formation is considered to be an important consequence of conventional tillage practices in Southeastern Brazil, few studies have focused on its hydrological consequences. Detailed investigations in two experimental plots located in the hilly landscape of Serra do Mar close to Rio de Janeiro city were carried out to characterize the changes in soil physical properties and in soil hydrology due to plough pan formation. Conventional (CT) and minimum tillage (MT) practices were implemented in two plots for 3 years and soil matric potential (SMP) was monitored in each plot via nests of tensiometers and Watermark (R) sensors installed at different depths. Undisturbed soil blocks were collected for micromorphological analyses to quantify the total pore space in soils under CT and MT systems, and in soils under natural tropical forest. Results suggest that soils under the CT system developed a plough pan layer at about 20 cm depth that had 44% less total porosity as compared to surface conditions. It is shown that soils under the CT system tended to stay saturated for longer periods of time after each rainfall event. Besides, during intense rainy periods soils under the CT system may develop hydrologic conditions that favor lateral flows while soils under the MT system were still draining. Such hydrological responses may explain why average soil erosion rates measured for individual rainfall events under the CT system were about 2.5 times greater than the ones observed at MT. The results attested that conventional tillage in this area generated modifications in soil fabric, especially in pore-size distribution and connectivity, which induced important changes in soil hydrology and soil erosion. The agricultural practices used in this area, associated with the local steep hillslopes and intense rainfall events, are definitely not adequate and require the introduction of soil and water conservation practices in order to become sustainable. 650 $aSoil compaction 650 $aSoil erosion 650 $aSoil micromorphology 650 $aCompactação do Solo 650 $aErosão do Solo 650 $aHidrologia 653 $aPlough pan 700 1 $aFERNANDES, N. F. 700 1 $aMIRANDA, J. P. L. 700 1 $aSOUZA, A. P. 700 1 $aLOPES, M. R. S. 700 1 $aPALMIERI, F. 773 $tJournal of Hydrology$gv. 393, n. 1/2, p. 94-104, Oct. 2010.
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