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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria Tropical; Embrapa Mandioca e Fruticultura. |
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Data corrente: |
23/05/2016 |
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Data da última atualização: |
04/04/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, S. P.; CÂNDIDO, M. J. D.; WEBER, O. B.; XAVIER, F. A. da S.; ESCOBAR, M. E. O.; OLIVEIRA, T. S. |
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Afiliação: |
Sâmia P. Oliveira, Universidade Federal do Ceará - UFC.; Magno José D. Cândido, Universidade Federal do Ceará - UFC.; OLMAR BALLER WEBER, CNPAT; FRANCISCO ALISSON DA SILVA XAVIER, CNPMF; Maria Eugenia Ortiz Escobar, Universidade Federal do Ceará - UFC.; Teógenes S. Oliveira, Departamento de Ciência do Solo, Universidade Federal de Viçosa. |
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Título: |
Conversion of forest into irrigated pasture II. Changes in the physical properties of the soil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Catena, v. 143, p. 70-77, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
The replacement of natural vegetation (NV) by agricultural species may cause important changes in the ecosystem. Land use and management result in modifications of soil properties and functions, especiallywith the application of irrigation. The aimhere therefore,was to assess the physical properties that are indicative of soil quality in an area under irrigated pasture (PAST), and to compare the results with those obtained in an area under natural vegetation. In order to identify changes in the soil, some physical attributes {aggregate stability, soil water retention curve, Dexter soil physical quality index (S), and least limitingwater range}were determined, together with the total amount of lipids and glomalin, which can act as structure-stabilizing agents for different classes of aggregate. Rhizodeposition, a characteristic of grasses, and associated with the supply of plant biomass from the management practices used in PAST, may explain the differences in aggregate stability in the studied areas. The results showed that, despite the highest levels of lipids being found in PAST, it can be inferred that, due to the sandy texture and trampling by animals, there has been no effective structuring of the soil on the surface. In contrast to the trend observed for the lipid content of the soil, glomalin levels were greater in NV, and it was demonstrated that the glomalin content reacts sensitively to changes in land use. The least limiting water range (LLWR) is narrower under PAST when compared to NV, and reflects the loss of the physical quality of the soil due to themanagement of the pasture. Under such conditions therefore, plants may be susceptible towater stress when there is no irrigation. It can be concluded that the management of animals and pasture adopted in this study negatively affected the physical properties under evaluation, despite the better chemical and organic conditions of the soil. MenosThe replacement of natural vegetation (NV) by agricultural species may cause important changes in the ecosystem. Land use and management result in modifications of soil properties and functions, especiallywith the application of irrigation. The aimhere therefore,was to assess the physical properties that are indicative of soil quality in an area under irrigated pasture (PAST), and to compare the results with those obtained in an area under natural vegetation. In order to identify changes in the soil, some physical attributes {aggregate stability, soil water retention curve, Dexter soil physical quality index (S), and least limitingwater range}were determined, together with the total amount of lipids and glomalin, which can act as structure-stabilizing agents for different classes of aggregate. Rhizodeposition, a characteristic of grasses, and associated with the supply of plant biomass from the management practices used in PAST, may explain the differences in aggregate stability in the studied areas. The results showed that, despite the highest levels of lipids being found in PAST, it can be inferred that, due to the sandy texture and trampling by animals, there has been no effective structuring of the soil on the surface. In contrast to the trend observed for the lipid content of the soil, glomalin levels were greater in NV, and it was demonstrated that the glomalin content reacts sensitively to changes in land use. The least limiting water range (LLWR) is narrower under PA... Mostrar Tudo |
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Palavras-Chave: |
Agregados; Índice S; Intervalo hídrico ótimo; Uso do solo. |
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Thesagro: |
Matéria Orgânica; Solo. |
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Thesaurus Nal: |
Soil. |
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Categoria do assunto: |
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P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02671naa a2200265 a 4500
001 2048878
005 2017-04-04
008 2016 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, S. P.
245 $aConversion of forest into irrigated pasture II. Changes in the physical properties of the soil.$h[electronic resource]
260 $c2016
520 $aThe replacement of natural vegetation (NV) by agricultural species may cause important changes in the ecosystem. Land use and management result in modifications of soil properties and functions, especiallywith the application of irrigation. The aimhere therefore,was to assess the physical properties that are indicative of soil quality in an area under irrigated pasture (PAST), and to compare the results with those obtained in an area under natural vegetation. In order to identify changes in the soil, some physical attributes {aggregate stability, soil water retention curve, Dexter soil physical quality index (S), and least limitingwater range}were determined, together with the total amount of lipids and glomalin, which can act as structure-stabilizing agents for different classes of aggregate. Rhizodeposition, a characteristic of grasses, and associated with the supply of plant biomass from the management practices used in PAST, may explain the differences in aggregate stability in the studied areas. The results showed that, despite the highest levels of lipids being found in PAST, it can be inferred that, due to the sandy texture and trampling by animals, there has been no effective structuring of the soil on the surface. In contrast to the trend observed for the lipid content of the soil, glomalin levels were greater in NV, and it was demonstrated that the glomalin content reacts sensitively to changes in land use. The least limiting water range (LLWR) is narrower under PAST when compared to NV, and reflects the loss of the physical quality of the soil due to themanagement of the pasture. Under such conditions therefore, plants may be susceptible towater stress when there is no irrigation. It can be concluded that the management of animals and pasture adopted in this study negatively affected the physical properties under evaluation, despite the better chemical and organic conditions of the soil.
650 $aSoil
650 $aMatéria Orgânica
650 $aSolo
653 $aAgregados
653 $aÍndice S
653 $aIntervalo hídrico ótimo
653 $aUso do solo
700 1 $aCÂNDIDO, M. J. D.
700 1 $aWEBER, O. B.
700 1 $aXAVIER, F. A. da S.
700 1 $aESCOBAR, M. E. O.
700 1 $aOLIVEIRA, T. S.
773 $tCatena$gv. 143, p. 70-77, 2016.
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Registro original: |
Embrapa Agroindústria Tropical (CNPAT) |
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| Registros recuperados : 122 | |
| 1. |  | ASSIS, A. G. de. Alimentacao de vacas leiteiras. Juiz de Fora: NESTLE/EMBRAPA-CNPGL/EPAMIG-Instituto de Laticinios Candido Tostes, 1985. p.80-98. In: CURSO DE PECUARIA LEITEIRA, 3., 1984, Juiz de Fora.| Biblioteca(s): Embrapa Gado de Leite. |
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| 5. | | ASSIS, A.; PANIZZI, M. Biologicamente corretos. Agroanalysis, v. 23, n. 4, p. 32-34, 2003. Nome correto do segundo autor CARRÃO-PANIZZI, M. C.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - A |
| Biblioteca(s): Embrapa Soja. |
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| 10. | | ASSIS, A. M. de; UNEMOTO, L. K.; FARIA, R. T. de; DESTRO, d. Adaptation of anthurium cultivars as cut flowers in a subtropical area. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 46, n. 2, p. 161-166, fev. 2011 Título em português: Adaptação de cultivares de antúrio como flor de corte em área subtropical.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 15. | | CABRAL, L. M. C.; ASSIS, A. R.; BIZZO, H. R.; MATTA, V. M.; SARAIVA, S. H. Evaluation of roasted coffee beverage pervaporation to aroma concentration: process efficiency and enrichment factor. In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 22., 2008, Campinas. Programme. Abstracts. Lausanne: Association for Science and Information on Coffee, 2008. p. 46, F406.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 16. | | CARNEIRO, H.; ASSIS, A. G.; RODRIGUES, J. A. S.; CORREA, T. A. Efeito do tanino condensado do sorgo como protetor de proteínas e mitigador de metano. In: CONGRESSO NACIONAL DE MILHO E SORGO, 26.; SIMPÓSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 2.; SIMPÓSIO SOBRE COLLETOTRICHUM GRAMINICOLA, 1., 2006, Belo Horizonte, Inovação para sistemas integrados de produção: trabalhos apresentados. [Sete Lagoas]: ABMS, 2006. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 122 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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