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| Registros recuperados : 120 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Meio Ambiente; Embrapa Unidades Centrais. |
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Data corrente: |
14/01/2008 |
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Data da última atualização: |
25/03/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
PIRES, A. M. M.; MARCHI, G.; MATTIAZZO, M. E.; GUILHERME, L. R. G. |
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Afiliação: |
Adriana Marlene Moreno Pires, Embrapa Meio Ambiente; Giuliano Marchi, Embrapa Cerrados; Maria Emília Mattiazzo, Departamento de Química-ESALQ-USP; Luiz Roberto Guimarães Guilherme, Departamento de Ciência do Solo-UFV. |
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Título: |
Organic acids in the rhizosphere and phytoavailability of sewage sludge-borne trace elements. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 42, n. 7, p. 917-924, 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this work was to quantify low molecular weight organic acids in the rhizosphere of plants grown in a sewage sludge-treated media, and to assess the correlation between the release of the acids and the concentrations of trace-elements in the shoots of the plants. The species utilized in the experiment were cultivated in sand and sewage sludge-treated sand. The acetic, citric, lactic, and oxalic acids, were identified and quantified by high performance liquid chromatography in samples collected from a hydroponics system. Averages obtained from each treatment, concentration of trace elements in shoots and concentration of organic acids in the rhizosphere, were compared by Tukey test, at 5% of probability. Linear correlation analysis was applied to verify an association between the concentrations of organic acids and of trace elements. The average composition of organic acids for all plants was: 43.2, 31.1, 20.4 and 5.3% for acetic, citric, lactic, and oxalic acids, respectively. All organic acids evaluated, except for the citric acid, showed a close statistical agreement with the concentrations of Cd, Cu, Ni, and Zn found in the shoots. There is a positive relationship between organic acids present in the rhizosphere and trace element phytoavailability. |
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Palavras-Chave: |
availability; biosolid; biossólido; disponibilidade; exsudatos; exudates; metais pesados. |
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Thesagro: |
Ácido Orgânico; Adubo de Esgoto; Exsudato; Lodo Residual; Metal Pesado; Solo. |
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Thesaurus NAL: |
heavy metals. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/100088/1/2007AP-026.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/41093/1/42n07a02.pdf
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Marc: |
LEADER 02171naa a2200325 a 4500
001 1015953
005 2014-03-25
008 2007 bl uuuu u00u1 u #d
100 1 $aPIRES, A. M. M.
245 $aOrganic acids in the rhizosphere and phytoavailability of sewage sludge-borne trace elements.
260 $c2007
520 $aThe aim of this work was to quantify low molecular weight organic acids in the rhizosphere of plants grown in a sewage sludge-treated media, and to assess the correlation between the release of the acids and the concentrations of trace-elements in the shoots of the plants. The species utilized in the experiment were cultivated in sand and sewage sludge-treated sand. The acetic, citric, lactic, and oxalic acids, were identified and quantified by high performance liquid chromatography in samples collected from a hydroponics system. Averages obtained from each treatment, concentration of trace elements in shoots and concentration of organic acids in the rhizosphere, were compared by Tukey test, at 5% of probability. Linear correlation analysis was applied to verify an association between the concentrations of organic acids and of trace elements. The average composition of organic acids for all plants was: 43.2, 31.1, 20.4 and 5.3% for acetic, citric, lactic, and oxalic acids, respectively. All organic acids evaluated, except for the citric acid, showed a close statistical agreement with the concentrations of Cd, Cu, Ni, and Zn found in the shoots. There is a positive relationship between organic acids present in the rhizosphere and trace element phytoavailability.
650 $aheavy metals
650 $aÁcido Orgânico
650 $aAdubo de Esgoto
650 $aExsudato
650 $aLodo Residual
650 $aMetal Pesado
650 $aSolo
653 $aavailability
653 $abiosolid
653 $abiossólido
653 $adisponibilidade
653 $aexsudatos
653 $aexudates
653 $ametais pesados
700 1 $aMARCHI, G.
700 1 $aMATTIAZZO, M. E.
700 1 $aGUILHERME, L. R. G.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 42, n. 7, p. 917-924, 2007.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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