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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
15/12/2015 |
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Data da última atualização: |
08/03/2016 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ALVES, B. L.; CARDOSO, S. C.; OLIVEIRA, S. A. S. de. |
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Afiliação: |
BERNARDO LOVATTI ALVES, UFRB; SUANE COUTINHO CARDOSO, IF Baiano; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF. |
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Título: |
Avaliação de cultivares de mandioca resistentes à bacteriose em condições de campo, no município de Guanambi-BA. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 9., 2015: Cruz das Almas, BA. Pesquisa: para quê? para quem? : resumos. Brasília, DF : Embrapa, 2015. |
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Idioma: |
Português |
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Conteúdo: |
Descrita como uma das principais doenças da mandioca em áreas tropicais e subtropicais, a bacteriose é causada pela bactéria Xanthomonas axonopodis pv. manihotis. A doença se caracteriza por lesões angulares nas folhas, murcha e seca de ramos, e principalmente por lesões necróticas nas hastes e pecíolos com exsudação de goma. |
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Thesagro: |
Melhoramento; Resistência. |
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Thesaurus Nal: |
Xanthomonas. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/135615/1/Avaliacao-de-cultivares.pdf
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Marc: |
LEADER 00995nam a2200169 a 4500
001 2031701
005 2016-03-08
008 2015 bl uuuu u00u1 u #d
100 1 $aALVES, B. L.
245 $aAvaliação de cultivares de mandioca resistentes à bacteriose em condições de campo, no município de Guanambi-BA.$h[electronic resource]
260 $aIn: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 9., 2015: Cruz das Almas, BA. Pesquisa: para quê? para quem? : resumos. Brasília, DF : Embrapa$c2015
520 $aDescrita como uma das principais doenças da mandioca em áreas tropicais e subtropicais, a bacteriose é causada pela bactéria Xanthomonas axonopodis pv. manihotis. A doença se caracteriza por lesões angulares nas folhas, murcha e seca de ramos, e principalmente por lesões necróticas nas hastes e pecíolos com exsudação de goma.
650 $aXanthomonas
650 $aMelhoramento
650 $aResistência
700 1 $aCARDOSO, S. C.
700 1 $aOLIVEIRA, S. A. S. de
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
10/03/2023 |
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Data da última atualização: |
10/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SANTOS, S. R. dos; SCHELLEKENS, J.; BUURMAN, P.; CORNELIS, J-T.; VANCAMPENHOUT, K.; SILVA, W. T. L. da; CAMARGO, P. B. de; VIDAL-TORRADO, P. |
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Afiliação: |
WILSON TADEU LOPES DA SILVA, CNPDIA. |
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Título: |
Selective sorption and desorption of DOM in Podzol horizons - DOC and aluminium contents of leachates from a column experiment. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Science of the Total Environment, v. 872. 162234, 2023. |
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Páginas: |
1 - 10 |
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ISSN: |
0048-9697 |
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DOI: |
http://dx.doi.org/10.1016/j.scitotenv.2023.162234 |
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Idioma: |
Inglês |
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Conteúdo: |
Complexation of dissolved organic matter (DOM) with cations and minerals contributes to the stabilization of carbon in soils, and can enable the transport of metals in the environment. Hence, a proper understanding of mechanisms that control DOM binding properties in the soil is important for major environmental challenges, such as climate change and stream pollution. However, the role of DOM source in those mechanisms remains understudied. Here, we consider poorly drained tropical Podzols as a model environment to isolate effects of aluminium and DOM on sorption and desorption processes in podzolisation. We collected E- and Bh-horizons from a Brazilian coastal Podzol under tropical rainforest to conduct a column experiment, and percolated the columns with DOM collected from a stream (Stream), peat water (Peat), litter (Litter) and charred litter (Char). To quantify sorption and desorption from the columns, leachates were analysed for DOC content, aluminium content, pH, and the amount of fulvic acid relative to humic acid. The results showed large differences in DOC retention between DOM-types, which were consistent over all columns. Retention of DOC in the column varied between 25 % and 92 % for DOM-type Stream, between 33 % and 63 % for DOM-type Peat, between 22 % and 47 % for DOM-type Litter, and between 8 % and 49 % for DOM-type Char. Similarly, desorption from columns with B-horizon material highly differed between DOM-types. Percolation with DOM-types Stream and Peat caused a release of native DOC from B columns that was higher than in those percolated with water only. On the other hand, percolation of B columns with DOM-types Litter and Char caused a net DOC retention. These differences reflect that certain DOM-types hindered desorption, while other DOM-types caused active desorption. The large differences in sorption/desorption between DOM-types implies that changes in environmental conditions may highly influence the fate of soil carbon in Podzols MenosComplexation of dissolved organic matter (DOM) with cations and minerals contributes to the stabilization of carbon in soils, and can enable the transport of metals in the environment. Hence, a proper understanding of mechanisms that control DOM binding properties in the soil is important for major environmental challenges, such as climate change and stream pollution. However, the role of DOM source in those mechanisms remains understudied. Here, we consider poorly drained tropical Podzols as a model environment to isolate effects of aluminium and DOM on sorption and desorption processes in podzolisation. We collected E- and Bh-horizons from a Brazilian coastal Podzol under tropical rainforest to conduct a column experiment, and percolated the columns with DOM collected from a stream (Stream), peat water (Peat), litter (Litter) and charred litter (Char). To quantify sorption and desorption from the columns, leachates were analysed for DOC content, aluminium content, pH, and the amount of fulvic acid relative to humic acid. The results showed large differences in DOC retention between DOM-types, which were consistent over all columns. Retention of DOC in the column varied between 25 % and 92 % for DOM-type Stream, between 33 % and 63 % for DOM-type Peat, between 22 % and 47 % for DOM-type Litter, and between 8 % and 49 % for DOM-type Char. Similarly, desorption from columns with B-horizon material highly differed between DOM-types. Percolation with DOM-types Stream and Peat c... Mostrar Tudo |
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Palavras-Chave: |
Complexation; Podzol B-horizon; Soil carbon. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02861naa a2200277 a 4500
001 2152250
005 2023-03-10
008 2023 bl uuuu u00u1 u #d
022 $a0048-9697
024 7 $ahttp://dx.doi.org/10.1016/j.scitotenv.2023.162234$2DOI
100 1 $aSANTOS, S. R. dos
245 $aSelective sorption and desorption of DOM in Podzol horizons - DOC and aluminium contents of leachates from a column experiment.$h[electronic resource]
260 $c2023
300 $a1 - 10
520 $aComplexation of dissolved organic matter (DOM) with cations and minerals contributes to the stabilization of carbon in soils, and can enable the transport of metals in the environment. Hence, a proper understanding of mechanisms that control DOM binding properties in the soil is important for major environmental challenges, such as climate change and stream pollution. However, the role of DOM source in those mechanisms remains understudied. Here, we consider poorly drained tropical Podzols as a model environment to isolate effects of aluminium and DOM on sorption and desorption processes in podzolisation. We collected E- and Bh-horizons from a Brazilian coastal Podzol under tropical rainforest to conduct a column experiment, and percolated the columns with DOM collected from a stream (Stream), peat water (Peat), litter (Litter) and charred litter (Char). To quantify sorption and desorption from the columns, leachates were analysed for DOC content, aluminium content, pH, and the amount of fulvic acid relative to humic acid. The results showed large differences in DOC retention between DOM-types, which were consistent over all columns. Retention of DOC in the column varied between 25 % and 92 % for DOM-type Stream, between 33 % and 63 % for DOM-type Peat, between 22 % and 47 % for DOM-type Litter, and between 8 % and 49 % for DOM-type Char. Similarly, desorption from columns with B-horizon material highly differed between DOM-types. Percolation with DOM-types Stream and Peat caused a release of native DOC from B columns that was higher than in those percolated with water only. On the other hand, percolation of B columns with DOM-types Litter and Char caused a net DOC retention. These differences reflect that certain DOM-types hindered desorption, while other DOM-types caused active desorption. The large differences in sorption/desorption between DOM-types implies that changes in environmental conditions may highly influence the fate of soil carbon in Podzols
653 $aComplexation
653 $aPodzol B-horizon
653 $aSoil carbon
700 1 $aSCHELLEKENS, J.
700 1 $aBUURMAN, P.
700 1 $aCORNELIS, J-T.
700 1 $aVANCAMPENHOUT, K.
700 1 $aSILVA, W. T. L. da
700 1 $aCAMARGO, P. B. de
700 1 $aVIDAL-TORRADO, P.
773 $tScience of the Total Environment$gv. 872. 162234, 2023.
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