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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
19/10/2012 |
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Data da última atualização: |
03/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CANELLAS, L. P.; DOBBSS, L. B.; OLIVEIRA, A. L.; CHAGAS, J. G.; AGUIAR, N. O.; RUMJANEK, V. M.; NOVOTNY, E. H.; OLIVARES, F. L.; SPACCINI, R.; PICCOLO, A. |
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Afiliação: |
ETELVINO HENRIQUE NOVOTNY, CNPS. |
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Título: |
Chemical properties of humic matter as related to induction of plant lateral roots. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
European Journal of Soil Science, v. 63, n. 3, p. 315-324, Jun. 2012. |
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DOI: |
https://doi.org/10.1111/j.1365-2389.2012.01439.x |
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Idioma: |
Inglês |
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Conteúdo: |
A series of humic matter samples isolated from a soil sequence, different oxisols, size-fractionated from avermicompost humic acid and subjected to chemical modifications, were characterized by CPMAS13C-NMRspectroscopy. The relative signal areas in chemical shift regions of NMR spectra of the four sets of sampleswere analysed by principal component analysis (PCA). Hierarchical cluster analysis (HCA) was applied tobuild a classification model, which allowed the recognition of humic matter according to its origin. Therelationship between carbon species and biological activity of humic acids, as promoters of lateral rootemergence, was obtained by applying PLS multivariate analysis. This showed that lateral root emergencewas mostly related to NMR parameters such as the hydrophobicity index (HB/HI) and the 40 - 110 and160 - 200 ppm chemical shift regions (hydrophilic carbon HI), while the content of hydrophobic (HB) carbon inhumic samples was negatively correlated with induction of lateral root hair. Our results represent a step furtherin the structure-bioactivity relationship of natural humic substances and confirm their role as plant root growthpromoters. |
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Palavras-Chave: |
Humic matter; Humic substance; Vermicompost. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02005naa a2200277 a 4500
001 1937279
005 2021-11-03
008 2012 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/j.1365-2389.2012.01439.x$2DOI
100 1 $aCANELLAS, L. P.
245 $aChemical properties of humic matter as related to induction of plant lateral roots.$h[electronic resource]
260 $c2012
520 $aA series of humic matter samples isolated from a soil sequence, different oxisols, size-fractionated from avermicompost humic acid and subjected to chemical modifications, were characterized by CPMAS13C-NMRspectroscopy. The relative signal areas in chemical shift regions of NMR spectra of the four sets of sampleswere analysed by principal component analysis (PCA). Hierarchical cluster analysis (HCA) was applied tobuild a classification model, which allowed the recognition of humic matter according to its origin. Therelationship between carbon species and biological activity of humic acids, as promoters of lateral rootemergence, was obtained by applying PLS multivariate analysis. This showed that lateral root emergencewas mostly related to NMR parameters such as the hydrophobicity index (HB/HI) and the 40 - 110 and160 - 200 ppm chemical shift regions (hydrophilic carbon HI), while the content of hydrophobic (HB) carbon inhumic samples was negatively correlated with induction of lateral root hair. Our results represent a step furtherin the structure-bioactivity relationship of natural humic substances and confirm their role as plant root growthpromoters.
653 $aHumic matter
653 $aHumic substance
653 $aVermicompost
700 1 $aDOBBSS, L. B.
700 1 $aOLIVEIRA, A. L.
700 1 $aCHAGAS, J. G.
700 1 $aAGUIAR, N. O.
700 1 $aRUMJANEK, V. M.
700 1 $aNOVOTNY, E. H.
700 1 $aOLIVARES, F. L.
700 1 $aSPACCINI, R.
700 1 $aPICCOLO, A.
773 $tEuropean Journal of Soil Science$gv. 63, n. 3, p. 315-324, Jun. 2012.
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Registro original: |
Embrapa Solos (CNPS) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
11/03/1999 |
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Data da última atualização: |
11/03/1999 |
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Autoria: |
CARVALHO JUNIOR, O. A. de; BAPTISTA, G. M. de M.; MADEIRA NETTO, J. da S.; MARTINS, E. de S.; CARVALHO, A. P. F.; MENESES, P. R. |
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Título: |
Utilizacao de dados hiperespectrais do sensor A VIRIS para identificacao da feicao espectral da ligacao magnesio-hidroxila em latericos niqueliferos. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
In: SIMPOSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 9., 1998, Santos, SP. Anais. Sao Jose dos Campos: INPE/MCT/SELPER, 1998. |
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Páginas: |
nao paginado. |
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Idioma: |
Português |
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Conteúdo: |
Laterites containing nickel and occurring in the Votorantim mine in Niquelandia, GO, were sampled for mineral composition and reflectance spectra determinations in the laboratory. A VIRIS data of the sampled area, after atmospheric correction and reduction of radiance to scaled surface reflectance, were also used, with the objective of determining the spatial occurrences of nickel bearing minerals. Besides ferric oxides, the lateric material were rich in pimelite a clay mineral of the montmorilonite group presenting Mg-OH. In the reflectance spectra the Mg-OH bond is clearly identified by a sharp feature centered at 2300 nm regardless of the iron oxides occurrence. This feature could also be identified in the A VIRIS data. A simple arithmetic operation with two bands of the Mg-OH feature was useful in the determination of the occurrences of the pimelite rich laterites. |
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Palavras-Chave: |
Brasil; Goias; Niquelandia. |
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Thesagro: |
Cerrado; Sensoriamento Remoto. |
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Thesaurus NAL: |
Brazil; remote sensing. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01783naa a2200277 a 4500
001 1544836
005 1999-03-11
008 1998 bl uuuu u00u1 u #d
100 1 $aCARVALHO JUNIOR, O. A. de
245 $aUtilizacao de dados hiperespectrais do sensor A VIRIS para identificacao da feicao espectral da ligacao magnesio-hidroxila em latericos niqueliferos.
260 $c1998
300 $anao paginado.
520 $aLaterites containing nickel and occurring in the Votorantim mine in Niquelandia, GO, were sampled for mineral composition and reflectance spectra determinations in the laboratory. A VIRIS data of the sampled area, after atmospheric correction and reduction of radiance to scaled surface reflectance, were also used, with the objective of determining the spatial occurrences of nickel bearing minerals. Besides ferric oxides, the lateric material were rich in pimelite a clay mineral of the montmorilonite group presenting Mg-OH. In the reflectance spectra the Mg-OH bond is clearly identified by a sharp feature centered at 2300 nm regardless of the iron oxides occurrence. This feature could also be identified in the A VIRIS data. A simple arithmetic operation with two bands of the Mg-OH feature was useful in the determination of the occurrences of the pimelite rich laterites.
650 $aBrazil
650 $aremote sensing
650 $aCerrado
650 $aSensoriamento Remoto
653 $aBrasil
653 $aGoias
653 $aNiquelandia
700 1 $aBAPTISTA, G. M. de M.
700 1 $aMADEIRA NETTO, J. da S.
700 1 $aMARTINS, E. de S.
700 1 $aCARVALHO, A. P. F.
700 1 $aMENESES, P. R.
773 $tIn: SIMPOSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 9., 1998, Santos, SP. Anais. Sao Jose dos Campos: INPE/MCT/SELPER, 1998.
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