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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
27/09/2012 |
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Data da última atualização: |
09/01/2013 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SILVA, A. P.; BABUJIA, L. C.; MATSUMOTO, L. S.; GUIMARÃES, M. de F.; HUNGRIA, M. |
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Afiliação: |
ADRIANA PEREIRA DA SILVA, UEL; LETÍCIA CARLOS BABUJIA, UEM; LEOPOLDO SUSSUMU MATSUMOTO, UENP; MARIA DE FÁTIMA GUIMARÃES, UEL; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Bacterial diversity under different tillage and crop rotation systems. |
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Ano de publicação: |
2012 |
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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. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Notas: |
Fertbio. |
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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 |
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Thesagro: |
Rotação de cultura; Sistema de cultivo. |
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Thesaurus Nal: |
Crop rotation. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/66926/1/FERTBIO-1752.pdf
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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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Registro original: |
Embrapa Soja (CNPSO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
18/08/2010 |
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Data da última atualização: |
21/03/2011 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
NUNES JÚNIOR, J.; PIMENTA, C. B.; MEYER, M. C.; SEII, A. H.; NUNES SOBRINHO, J. B.; VILELA, V. S. |
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Afiliação: |
JOSÉ NUNES JÚNIOR, CTPA; C. B. PIMENTA, EMATER-GO; MAURICIO CONRADO MEYER, CNPSo; A. H. SEII, CTPA; J. B. NUNES SOBRINHO, EMATER-GO; V. S. VILELA, UFU. |
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Título: |
Avaliação da eficácia de fungicidas no controle da ferrugem asiática da soja (Phakopsora pachyrhizi), no estado de Goiás. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 31., 2010, Brasília, DF. Resumos... Londrina: Embrapa Soja, 2010. p. 156-158. Editores técnicos: Adilson de Oliveira Junior, Odilon Ferreira Saraiva, Regina Maria Villas Bôas de Campo Leite, César de Castro, Jussara Flores de Oliveira Arbues, Wellington Cavalcanti. |
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Idioma: |
Português |
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Thesagro: |
Doença de planta; Ferrugem; Fungicida; Phakopsora Pachyrhizi; Soja. |
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Thesaurus NAL: |
Fungicides; Plant diseases and disorders; Rust diseases; Soybeans. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 01096naa a2200277 a 4500
001 1860318
005 2011-03-21
008 2010 bl uuuu u00u1 u #d
100 1 $aNUNES JÚNIOR, J.
245 $aAvaliação da eficácia de fungicidas no controle da ferrugem asiática da soja (Phakopsora pachyrhizi), no estado de Goiás.
260 $c2010
650 $aFungicides
650 $aPlant diseases and disorders
650 $aRust diseases
650 $aSoybeans
650 $aDoença de planta
650 $aFerrugem
650 $aFungicida
650 $aPhakopsora Pachyrhizi
650 $aSoja
700 1 $aPIMENTA, C. B.
700 1 $aMEYER, M. C.
700 1 $aSEII, A. H.
700 1 $aNUNES SOBRINHO, J. B.
700 1 $aVILELA, V. S.
773 $tIn: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 31., 2010, Brasília, DF. Resumos... Londrina: Embrapa Soja, 2010. p. 156-158. Editores técnicos: Adilson de Oliveira Junior, Odilon Ferreira Saraiva, Regina Maria Villas Bôas de Campo Leite, César de Castro, Jussara Flores de Oliveira Arbues, Wellington Cavalcanti.
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