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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
09/12/2005 |
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Data da última atualização: |
13/01/2006 |
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Autoria: |
BROWN, G. G.; HUNGRIA, M.; FRANCHINI, J. C.; SOUZA, R. A.; KASCHUK, G.; BRANDÃO JUNIOR, O.; PERIERA, A. A.; BRUSSAARD, L.; GOEDE, R. G. M. de; TORRES, E. |
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Título: |
Conservation agriculture: making biodiversity work for integrated crop and soil management. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
In: DIVERSITAS: OSC, 1., 2005, Oaxaca. Integrating biodiversity science for human well-being: abstracts. Oaxaca: Diversitas, 2005. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Inglês |
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Notas: |
Seção Symposium 9. |
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Conteúdo: |
Soil microorganisms and animals are an essential part of agrobiodiversity and perform functions vital for agricultural productivity and sustainability. Their activity and biodiversity may be useful indicators of soil quality, ecosystem disturbance and the integrity of ecosystem functioning. Conservation agriculture and the adoption of no-tillage (NT) in the tropics is finally reversing physical, chemical, and biological soil degradation; in Brazil, 19 M ha are now devoted to NT. To evaluate the effect of different management practices on below-ground biodiversity, we monitored several long-term field trials in southern Brazil, including 2-25 yr NT and crop rotations based on soybean (Glycine max) or common bean (Phaseolus vulgaris). C- and N-microbial biomass and metabolic microbial efficiency were always higher in NT than in conventional tillage (CT) systems and were enhanced by legumes in the rotation. Bacterial and fungal genetic diversity, evaluated by the DGGE analysis, were also higher under both NT and rotation systems including legumes. Diversity of rhizobial strains (assessed by PCR-RFLP) was also higher under NT, although species diversity was not always higher. The environmental stability offered by the NT system may decrease total species diversity, but simultaneously increase genetic diversity within each species. Soil macrofauna diversity was higher in NT (16-18 orders) than in CT (12-13 orders), while rotations seemed to have a secondary effect. Tillage selected for resistant organisms, and in its absence a more diverse, yet more "fragile" assemblage was able to persist, performing a larger number of functions. The results obtained emphasize the benefits of NT and crop rotation with legumes, but also indicate a poor understanding of the complex relationship between soil biodiversity and sustainability and the challenges to adequately evaluate and monitor soil quality. MenosSoil microorganisms and animals are an essential part of agrobiodiversity and perform functions vital for agricultural productivity and sustainability. Their activity and biodiversity may be useful indicators of soil quality, ecosystem disturbance and the integrity of ecosystem functioning. Conservation agriculture and the adoption of no-tillage (NT) in the tropics is finally reversing physical, chemical, and biological soil degradation; in Brazil, 19 M ha are now devoted to NT. To evaluate the effect of different management practices on below-ground biodiversity, we monitored several long-term field trials in southern Brazil, including 2-25 yr NT and crop rotations based on soybean (Glycine max) or common bean (Phaseolus vulgaris). C- and N-microbial biomass and metabolic microbial efficiency were always higher in NT than in conventional tillage (CT) systems and were enhanced by legumes in the rotation. Bacterial and fungal genetic diversity, evaluated by the DGGE analysis, were also higher under both NT and rotation systems including legumes. Diversity of rhizobial strains (assessed by PCR-RFLP) was also higher under NT, although species diversity was not always higher. The environmental stability offered by the NT system may decrease total species diversity, but simultaneously increase genetic diversity within each species. Soil macrofauna diversity was higher in NT (16-18 orders) than in CT (12-13 orders), while rotations seemed to have a secondary effect. Tillage select... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02699naa a2200253 a 4500
001 1468621
005 2006-01-13
008 2005 bl uuuu u00u1 u #d
100 1 $aBROWN, G. G.
245 $aConservation agriculture$bmaking biodiversity work for integrated crop and soil management.
260 $c2005
300 $c1 CD-ROM.
500 $aSeção Symposium 9.
520 $aSoil microorganisms and animals are an essential part of agrobiodiversity and perform functions vital for agricultural productivity and sustainability. Their activity and biodiversity may be useful indicators of soil quality, ecosystem disturbance and the integrity of ecosystem functioning. Conservation agriculture and the adoption of no-tillage (NT) in the tropics is finally reversing physical, chemical, and biological soil degradation; in Brazil, 19 M ha are now devoted to NT. To evaluate the effect of different management practices on below-ground biodiversity, we monitored several long-term field trials in southern Brazil, including 2-25 yr NT and crop rotations based on soybean (Glycine max) or common bean (Phaseolus vulgaris). C- and N-microbial biomass and metabolic microbial efficiency were always higher in NT than in conventional tillage (CT) systems and were enhanced by legumes in the rotation. Bacterial and fungal genetic diversity, evaluated by the DGGE analysis, were also higher under both NT and rotation systems including legumes. Diversity of rhizobial strains (assessed by PCR-RFLP) was also higher under NT, although species diversity was not always higher. The environmental stability offered by the NT system may decrease total species diversity, but simultaneously increase genetic diversity within each species. Soil macrofauna diversity was higher in NT (16-18 orders) than in CT (12-13 orders), while rotations seemed to have a secondary effect. Tillage selected for resistant organisms, and in its absence a more diverse, yet more "fragile" assemblage was able to persist, performing a larger number of functions. The results obtained emphasize the benefits of NT and crop rotation with legumes, but also indicate a poor understanding of the complex relationship between soil biodiversity and sustainability and the challenges to adequately evaluate and monitor soil quality.
700 1 $aHUNGRIA, M.
700 1 $aFRANCHINI, J. C.
700 1 $aSOUZA, R. A.
700 1 $aKASCHUK, G.
700 1 $aBRANDÃO JUNIOR, O.
700 1 $aPERIERA, A. A.
700 1 $aBRUSSAARD, L.
700 1 $aGOEDE, R. G. M. de
700 1 $aTORRES, E.
773 $tIn: DIVERSITAS: OSC, 1., 2005, Oaxaca. Integrating biodiversity science for human well-being: abstracts. Oaxaca: Diversitas, 2005.
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Registro original: |
Embrapa Soja (CNPSO) |
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| Registros recuperados : 40 | |
| 4. |  | KASCHUK, G.; HUNGRIA, M.; ANDRADE, D. S. Diversidade de rizóbios que nodulam o feijoeiro (phaseolus vulgaris L.) sob os sistemas de plantios direto e convencional em Ponta grossa, PR. In: WORLD CONGRESS ON CONSERVATION AGRICULTURE = CONGRESSO MUNDIAL SOBRE AGRICULTURA CONSERVACIONISTA, 2., 2003, Foz do Iguaçu. Producing in harmony with nature: [proceedings ...] = Produzindo em harmonia com a natureza: [anais ...]. Ponta Grossa: Federação Brasileira de Plantio Direto na Palha, 2003. v. 2 p. 452-455. II World Congress on Conservation Agriculture, Iguassu Falls, 2003. Extended summary / posters.| Biblioteca(s): Embrapa Soja. |
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| 5. | | KASCHUK, G.; ALBERTON, O.; HUNGRIA, M. Quantificando os efeitos de diferentes usos agrícolas na biomassa microbiana do solo nos biomas brasileiros. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 29.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 13.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 11.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 8., 2010, Guarapari. Fontes de nutrientes e produção agrícola: modelando o futuro: anais. Viçosa: SBCS, 2010. 4 p. Trab. 437. 1 CD-ROM. FERTBIO 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 7. | | KASCHUK, G.; ALBERTON, O.; HUNGRIA, M. Três décadas de estudos sobre biomassa microbiana nos ecossistemas brasileiros: lições aprendidas sobre qualidade do solo e indicadores de sustentabilidade. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 29.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 13.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 11.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 8., 2010, Guarapari. Fontes de nutrientes e produção agrícola: modelando o futuro: anais. Viçosa: SBCS, 2010. 4 p. Trab. 1501. 1 CD-ROM. FERTBIO 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 11. | | LOUREIRO, M. de F.; KASCHUK, G.; ALBERTON, O.; HUNGRIA, M. Soybean [Glycine max (L.) Merrill] rhizobial diversity in Brazilian oxisols under various soil, cropping, and inoculation managements. Biology and Fertility of Soils, Berlin, v. 43, n. 6. p. 665-674, Aug. 2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Soja. |
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| 12. | | ALBERTONI, O.; ALEIXO, A. P.; URCOVICHE, R. C.; ROSSETO, P.; KASCHUK, G.; HUNGRIA, M. Abundância de fungos micorrízicos arbusculares e biomassa total fúngica e bacteriana de solos cultivados com cana de açúcar. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 30.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 14.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 12.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 9.; SIMPÓSIO SOBRE SELÊNIO NO BRASIL, 1., 2012, Maceió. A responsabilidade socioambiental da pesquisa agrícola: anais. Viçosa: SBCS, 2012. 4 p. Trab. 108. 1 CD-ROM. Fertbio.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 13. | | KASCHUK, G.; KUYPER, T. W.; LEFFELAAR, P. A.; HUNGRIA, M.; GILLER, K. E. Are the rates of photosynthesis stimulated by the carbon sink strength of rhizobial and arbuscular mycorrhizal symbioses? Soil Biology & Biochemistry, Oxford, v. 41, n. 6, p. 1233-1244, june 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Soja. |
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| 18. | | LOUREIRO, M. de F.; KASCHUK, G.; ALBERTON, O.; HUNGRIA, M.; CORREA, F. Diferenças qualitativas na microbiota do solo relacionadas ao manejo do solo e das culturas. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 25.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 9.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 7.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 4., 2002, Rio de Janeiro. Fertbio 2002: agricultura: bases ecológicas para o desenvolvimento social e econômico sustentado. Rio de Janeiro, 2002. p. 172. Guia do congressista e em CD-ROM.| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 40 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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