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Registro Completo |
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
10/10/1994 |
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Data da última atualização: |
10/10/1994 |
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Autoria: |
IMAEDA, A. A.; WATANABE, R. T.; KOBAYASHI, C. F. |
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Título: |
Ensaio comparativo de nematicidas granulados na cultura da cenoura (Daucus carota). |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
In: SEMINARIO DE HORTALICAS, 1., 1988, Sao Paulo. [Trabalhos apresentados...] Sao Paulo: CAC, 1988. |
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Páginas: |
p.30-32. |
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Idioma: |
Português |
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Palavras-Chave: |
Carrot; Control; Controle; Disease; Nematode. |
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Thesagro: |
Doença; Nematóide. |
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Thesaurus Nal: |
nematicides. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00679naa a2200241 a 4500
001 1751997
005 1994-10-10
008 1988 bl uuuu u00u1 u #d
100 1 $aIMAEDA, A. A.
245 $aEnsaio comparativo de nematicidas granulados na cultura da cenoura (Daucus carota).
260 $c1988
300 $ap.30-32.
650 $anematicides
650 $aDoença
650 $aNematóide
653 $aCarrot
653 $aControl
653 $aControle
653 $aDisease
653 $aNematode
700 1 $aWATANABE, R. T.
700 1 $aKOBAYASHI, C. F.
773 $tIn: SEMINARIO DE HORTALICAS, 1., 1988, Sao Paulo. [Trabalhos apresentados...] Sao Paulo: CAC, 1988.
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Registro original: |
Embrapa Hortaliças (CNPH) |
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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: |
13/08/2004 |
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Data da última atualização: |
08/03/2010 |
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Autoria: |
GONZALES-PEREZ, M.; MILORI, D. M. B. P.; COLNAGO, L.; MARTIN-NETO, L. |
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Título: |
Organic matter evaluation of a Brazilian Oxisol by spectroscopic techniques. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 686-688. |
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Idioma: |
Inglês |
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Notas: |
CLASSIFICAÇÃO CDD: 630 |
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Conteúdo: |
I. INTRODUCTION
There is still the necessity of understanding qualitative and quantitative changes that take place in sair organic matter (OM) and spectroscopic techniques have been largely applied in conducting related studies. The use of spectroscopic techniques, such as EPR, NMR, and others, allows possible insights into the chemical composition of humic substances (HS). They algo permit the determination of parameters related to the humification process of OM in soils, such as the degree of aromaticity, revealed by solid state 13C NMR (Stevenson, 1994), and the semiquinone- type free radical concentration, determined by EPR (Martin-Neto et al., 1991).
In recent years, fluorescence spectroscopy algo has been used as a tool to evaluate humification degree of soil OM. Zsolnay et aI. (1999), Kalbitz et al. (2000) and Milori et aI. (2002) report that the fluorescence spectroscopy of humic acids (HA) can provide indicators of molecular complexity, and they concluded that fluorescence intensity might be a good parameter for revealing the humification degree of soils. In this sense, Milori et al. (2004) proposed to apply laser induced fluorescence (LlF) spectroscopy to study OM of whole soils. Utilization of LlF spectroscopy has some advantages as the possibility to study whole soils without fractionation and purification treatments that economized reagents, is less time consuming and at the same time, permits to study OM associated with minerais in soil matrix. In the present approach was evaluated organic matter of whole Oxisols, under different tillage practices, by LlF spectroscopy and the results were compared to evaluation of humic acids, extracted from the same soils, by EPR, 13C NMR and fluorescence spectroscopies. MenosI. INTRODUCTION
There is still the necessity of understanding qualitative and quantitative changes that take place in sair organic matter (OM) and spectroscopic techniques have been largely applied in conducting related studies. The use of spectroscopic techniques, such as EPR, NMR, and others, allows possible insights into the chemical composition of humic substances (HS). They algo permit the determination of parameters related to the humification process of OM in soils, such as the degree of aromaticity, revealed by solid state 13C NMR (Stevenson, 1994), and the semiquinone- type free radical concentration, determined by EPR (Martin-Neto et al., 1991).
In recent years, fluorescence spectroscopy algo has been used as a tool to evaluate humification degree of soil OM. Zsolnay et aI. (1999), Kalbitz et al. (2000) and Milori et aI. (2002) report that the fluorescence spectroscopy of humic acids (HA) can provide indicators of molecular complexity, and they concluded that fluorescence intensity might be a good parameter for revealing the humification degree of soils. In this sense, Milori et al. (2004) proposed to apply laser induced fluorescence (LlF) spectroscopy to study OM of whole soils. Utilization of LlF spectroscopy has some advantages as the possibility to study whole soils without fractionation and purification treatments that economized reagents, is less time consuming and at the same time, permits to study OM associated with minerais in soil matrix. In the present... Mostrar Tudo |
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Palavras-Chave: |
EPR; NMR. |
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Thesaurus NAL: |
fluorescence; humic acids; soil organic matter. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02540naa a2200229 a 4500
001 1028585
005 2010-03-08
008 2004 bl --- 0-- u #d
100 1 $aGONZALES-PEREZ, M.
245 $aOrganic matter evaluation of a Brazilian Oxisol by spectroscopic techniques.
260 $c2004
500 $aCLASSIFICAÇÃO CDD: 630
520 $aI. INTRODUCTION There is still the necessity of understanding qualitative and quantitative changes that take place in sair organic matter (OM) and spectroscopic techniques have been largely applied in conducting related studies. The use of spectroscopic techniques, such as EPR, NMR, and others, allows possible insights into the chemical composition of humic substances (HS). They algo permit the determination of parameters related to the humification process of OM in soils, such as the degree of aromaticity, revealed by solid state 13C NMR (Stevenson, 1994), and the semiquinone- type free radical concentration, determined by EPR (Martin-Neto et al., 1991). In recent years, fluorescence spectroscopy algo has been used as a tool to evaluate humification degree of soil OM. Zsolnay et aI. (1999), Kalbitz et al. (2000) and Milori et aI. (2002) report that the fluorescence spectroscopy of humic acids (HA) can provide indicators of molecular complexity, and they concluded that fluorescence intensity might be a good parameter for revealing the humification degree of soils. In this sense, Milori et al. (2004) proposed to apply laser induced fluorescence (LlF) spectroscopy to study OM of whole soils. Utilization of LlF spectroscopy has some advantages as the possibility to study whole soils without fractionation and purification treatments that economized reagents, is less time consuming and at the same time, permits to study OM associated with minerais in soil matrix. In the present approach was evaluated organic matter of whole Oxisols, under different tillage practices, by LlF spectroscopy and the results were compared to evaluation of humic acids, extracted from the same soils, by EPR, 13C NMR and fluorescence spectroscopies.
650 $afluorescence
650 $ahumic acids
650 $asoil organic matter
653 $aEPR
653 $aNMR
700 1 $aMILORI, D. M. B. P.
700 1 $aCOLNAGO, L.
700 1 $aMARTIN-NETO, L.
773 $tIn: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 686-688.
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Embrapa Instrumentação (CNPDIA) |
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