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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
27/09/2012 |
Data da última atualização: |
09/01/2013 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
SILVA, A. P.; BABUJIA, L. C.; MATSUMOTO, L. S.; GUIMARÃES, M. de F.; HUNGRIA, M. |
Afiliação: |
ADRIANA PEREIRA DA SILVA, UEL; LETÍCIA CARLOS BABUJIA, UEM; LEOPOLDO SUSSUMU MATSUMOTO, UENP; MARIA DE FÁTIMA GUIMARÃES, UEL; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
Título: |
Bacterial diversity under different tillage and crop rotation systems. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
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. 1752. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Notas: |
Fertbio. |
Conteúdo: |
Microbial diversity can be used to assess the impact of agricultural practices on the long-term sustainability of cropping systems. The aim of this study was to investigate changes in soil bacterial diversity as a result of the impact of different soil tillage and crop rotation systems. Bacterial diversity was examined in the 0-10 cm layer in two field experiments by analyzing soil DNA using 16S rDNA PCR-DGGE profiles. Experiment 1 was a 26-year trial consisting of four soil tillage management systems: (1) no-tillage (NT), (2) disc plow (DP), (3) field cultivator (FC) and (4) heavy-disc harrow (DH), all under soybean(summer)/wheat(winter) crop succession. Experiment 2 was a 10-year trial consisting of DP and NT and three crop rotations (CR) including grasses, legumes and green manures. Cluster analysis of the 16S rDNA sequences revealed that the main effect on clustering was attributed to differences in soil tillage management systems. The Shannon index confirmed greater bacterial diversity under NT, followed by the FC, DH and DP. Therefore, diversity decreased as tillage practices intensified. The evenness index demonstrated the uniformity of the profiles of the bacterial communities with dominance of a few communities, regardless of soil tillage and crop rotation. Different crop rotations had only minor effects on bacterial diversity, but the results could be related to a previous fallow period. The results suggest that the DGGE profiles are sensitive bioindicators of the changes in bacterial diversity caused by soil tillage. MenosMicrobial diversity can be used to assess the impact of agricultural practices on the long-term sustainability of cropping systems. The aim of this study was to investigate changes in soil bacterial diversity as a result of the impact of different soil tillage and crop rotation systems. Bacterial diversity was examined in the 0-10 cm layer in two field experiments by analyzing soil DNA using 16S rDNA PCR-DGGE profiles. Experiment 1 was a 26-year trial consisting of four soil tillage management systems: (1) no-tillage (NT), (2) disc plow (DP), (3) field cultivator (FC) and (4) heavy-disc harrow (DH), all under soybean(summer)/wheat(winter) crop succession. Experiment 2 was a 10-year trial consisting of DP and NT and three crop rotations (CR) including grasses, legumes and green manures. Cluster analysis of the 16S rDNA sequences revealed that the main effect on clustering was attributed to differences in soil tillage management systems. The Shannon index confirmed greater bacterial diversity under NT, followed by the FC, DH and DP. Therefore, diversity decreased as tillage practices intensified. The evenness index demonstrated the uniformity of the profiles of the bacterial communities with dominance of a few communities, regardless of soil tillage and crop rotation. Different crop rotations had only minor effects on bacterial diversity, but the results could be related to a previous fallow period. The results suggest that the DGGE profiles are sensitive bioindicators of the ... Mostrar Tudo |
Thesagro: |
Rotação de cultura; Sistema de cultivo. |
Thesaurus Nal: |
Crop rotation. |
Categoria do assunto: |
A Sistemas de Cultivo |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/66926/1/FERTBIO-1752.pdf
|
Marc: |
LEADER 02486nam a2200217 a 4500 001 1934761 005 2013-01-09 008 2012 bl uuuu u00u1 u #d 100 1 $aSILVA, A. P. 245 $aBacterial diversity under different tillage and crop rotation systems. 260 $aIn: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 30.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 14.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 12.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 9.; SIMPÓSIO SOBRE SELÊNIO NO BRASIL, 1., 2012, Maceió. A responsabilidade socioambiental da pesquisa agrícola: anais. Viçosa: SBCS, 2012. 4 p. Trab. 1752.$c1752 300 $c1 CD-ROM. 500 $aFertbio. 520 $aMicrobial diversity can be used to assess the impact of agricultural practices on the long-term sustainability of cropping systems. The aim of this study was to investigate changes in soil bacterial diversity as a result of the impact of different soil tillage and crop rotation systems. Bacterial diversity was examined in the 0-10 cm layer in two field experiments by analyzing soil DNA using 16S rDNA PCR-DGGE profiles. Experiment 1 was a 26-year trial consisting of four soil tillage management systems: (1) no-tillage (NT), (2) disc plow (DP), (3) field cultivator (FC) and (4) heavy-disc harrow (DH), all under soybean(summer)/wheat(winter) crop succession. Experiment 2 was a 10-year trial consisting of DP and NT and three crop rotations (CR) including grasses, legumes and green manures. Cluster analysis of the 16S rDNA sequences revealed that the main effect on clustering was attributed to differences in soil tillage management systems. The Shannon index confirmed greater bacterial diversity under NT, followed by the FC, DH and DP. Therefore, diversity decreased as tillage practices intensified. The evenness index demonstrated the uniformity of the profiles of the bacterial communities with dominance of a few communities, regardless of soil tillage and crop rotation. Different crop rotations had only minor effects on bacterial diversity, but the results could be related to a previous fallow period. The results suggest that the DGGE profiles are sensitive bioindicators of the changes in bacterial diversity caused by soil tillage. 650 $aCrop rotation 650 $aRotação de cultura 650 $aSistema de cultivo 700 1 $aBABUJIA, L. C. 700 1 $aMATSUMOTO, L. S. 700 1 $aGUIMARÃES, M. de F. 700 1 $aHUNGRIA, M.
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Embrapa Soja (CNPSO) |
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Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
13/12/2010 |
Data da última atualização: |
10/02/2011 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
OLIVEIRA-FILHO, E. C. de. |
Afiliação: |
EDUARDO CYRINO DE OLIVEIRA FILHO, CPAC. |
Título: |
A qualidade da água como foco das pesquisas em saúde ambiental. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
In: CONGRESSO DE ENSINO, PESQUISA E EXTENSÃO; ENCONTRO DE INICIAÇÃO CIENTÍFICA DO UNICEUB, 8., 2010, Brasília, DF. Pensar Brasília: cenários e perspectivas da educação superior. Brasília, DF: UNICEUB, 2010. |
Páginas: |
p. 142. |
Idioma: |
Português |
Palavras-Chave: |
Saúde ambiental. |
Thesagro: |
Toxicologia. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00584naa a2200145 a 4500 001 1869551 005 2011-02-10 008 2010 bl uuuu u00u1 u #d 100 1 $aOLIVEIRA-FILHO, E. C. de 245 $aA qualidade da água como foco das pesquisas em saúde ambiental. 260 $c2010 300 $ap. 142. 650 $aToxicologia 653 $aSaúde ambiental 773 $tIn: CONGRESSO DE ENSINO, PESQUISA E EXTENSÃO; ENCONTRO DE INICIAÇÃO CIENTÍFICA DO UNICEUB, 8., 2010, Brasília, DF. Pensar Brasília: cenários e perspectivas da educação superior. Brasília, DF: UNICEUB, 2010.
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