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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
14/02/2008 |
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Data da última atualização: |
28/02/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CUNHA, T. J. F.; MADARI, B. E.; MARTIN NETO, L.; CANELLAS, L. P.; SIMOES, M. L.; SILVA, W. T. L. da; MILORI, D. M. B. P.; RIBEIRO, L. P.; ANJOS, L. H. C.; SANTOS, G. de A. |
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Afiliação: |
TONY JARBAS FERREIRA CUNHA, CPATSA; BEATA EMOKE MADARI, CNPAF; LADISLAU MARTIN NETO, CNPDIA; LUCIANO P. CANELLAS, Universidade Estadual do Norte Fluminense Darcy Ribeiro; MARCELO LUIZ SIMOES, CNPDIA; WILSON TADEU LOPES DA SILVA, CNPDIA; DEBORA MARCONDES BASTOS P MILORI, CNPDIA; LUCEDINO P. RIBEIRO, UFBA; LÚCIA HELENA C. ANJOS, UFRRJ; GABRIEL DE A. SANTOS, UFRRJ. |
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Título: |
Humic Acids of the Amazonian Dark Earth Soils: Terra Preta De Índio. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
In: WORLD CONGRESS OF SOIL SCIENCE, 18., 2006, Philadelphia. Abstracts... Madison: ASA: CSSA: SSSA, 2006. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
The humic acid fraction (HA) of some Amazonian dark earth soils (Terra Preta de Índio) from Brazil were characterized using ultraviolet-visible (UV-Vis), Fourier transform diffuse reflectance infrared (DRIFT), fluorescence excitation and emission, electron paramagnetic resonance (EPR), and nuclear magnetic resonance (NMR) spectroscopy, thermogravimetric analysis, elemental composition, and measurement of acidity (total, carboxylic, phenolic). The HA fraction was extracted using the method recommended by the International Humic Substances Society (IHSS). The HA samples were separated in 3 groups based on the corresponding land use of the area of its origin: anthropogenic soils under forest (SAF), anthropogenic soils under agricultural use (SAC), non-anthropogenic soils under forest (SNAF). The SNAF soils were representative of Amazonian soils. They were collected in adjacent areas to the anthropogenic soil profiles. This way the SNAF group was a reference group for comparison purposes to the anthropogenic soil groups (SAF and SAC). Comparative (test t) and multivariate statistical analyses (factor analysis, cluster analysis, and discriminant analysis) were applied in the study. The anthropogenic soil groups (SAF and SAC) showed better fertility characteristics than the non-anthropogenic soils (SNAF) (pH: SAF = 5.1, SAC = 5.4, SNAF = 4.4; base saturation [V%]: SAF =59, SAC = 51, SNAF = 18; calculated cation exchange capacity [CEC]: SAF = 17.5, SAC = 17.2, SNAF = 9.5 cmolc/kg; available P: SAF = 116, SAC = 291, SNAF = 5 mg/kg). In the SAF and SAC soil groups ~44% of the total carbon was found in the humic fraction, ~32% in the humic acid fraction, and ~13% in the fulvic acid fraction. These values for the SNAF soils were 49, 19, 16%, respectively. The most relevant characteristics of the HA of anthropogenic soils, when compared to the non-anthropogenic ones were their superior reactivity, stability, and humification degree. The HA of the SAF and SAC groups featured higher total acidity (SAF = 612, SAC = 712, SNAF = 575 cmolkg) and carboxylic acidity (SAF = 435, SAC = 454, SNAF = 320 cmol/kg), higher concentration of organic free radicals (SAF = 4.07, SAC = 6.59, SNAF = 2.11 spin g-1 1017), higher thermogravimetric index (ITG) (SAF = 3.0, SAC = 3.3, SNAF = 2.3), lower E4/E6 ratio (SAF = 4.2, SAC = 4.2, SNAF = 6.0), higher aromaticity index (IADRIFT: SAF = 0.87, SAC = 0.85, SNAF = 0.77; NMR(%): SAF = 36, SAC = 39, SNAF = 25), higher hidrophobicity index (SAF = 0.37, SAC = 0.48, SNAF = 0.35), higher humification degree (A4/A1: SAF = 2.574, SAC = 3.313, SNAF = 1.713; I485/I400: SAF = 2.004, SAC = 2.161, SNAF = 1.510), and were more recalcitrant (recalcitrant C/labile C: SAF = 2.0, SAC = 2.0, SNAF = 1.0) than the HA of the SNAF group. Data also showed that there was difference between the HA of the SAF and SAC soil groups. MenosThe humic acid fraction (HA) of some Amazonian dark earth soils (Terra Preta de Índio) from Brazil were characterized using ultraviolet-visible (UV-Vis), Fourier transform diffuse reflectance infrared (DRIFT), fluorescence excitation and emission, electron paramagnetic resonance (EPR), and nuclear magnetic resonance (NMR) spectroscopy, thermogravimetric analysis, elemental composition, and measurement of acidity (total, carboxylic, phenolic). The HA fraction was extracted using the method recommended by the International Humic Substances Society (IHSS). The HA samples were separated in 3 groups based on the corresponding land use of the area of its origin: anthropogenic soils under forest (SAF), anthropogenic soils under agricultural use (SAC), non-anthropogenic soils under forest (SNAF). The SNAF soils were representative of Amazonian soils. They were collected in adjacent areas to the anthropogenic soil profiles. This way the SNAF group was a reference group for comparison purposes to the anthropogenic soil groups (SAF and SAC). Comparative (test t) and multivariate statistical analyses (factor analysis, cluster analysis, and discriminant analysis) were applied in the study. The anthropogenic soil groups (SAF and SAC) showed better fertility characteristics than the non-anthropogenic soils (SNAF) (pH: SAF = 5.1, SAC = 5.4, SNAF = 4.4; base saturation [V%]: SAF =59, SAC = 51, SNAF = 18; calculated cation exchange capacity [CEC]: SAF = 17.5, SAC = 17.2, SNAF = 9.5 cmolc/kg; ... Mostrar Tudo |
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Palavras-Chave: |
Terra Preta de Indio. |
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Thesagro: |
Solo. |
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Thesaurus Nal: |
Soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/132747/1/36936.pdf
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Marc: |
LEADER 03641nam a2200265 a 4500
001 1160708
005 2018-02-28
008 2006 bl uuuu u00u1 u #d
100 1 $aCUNHA, T. J. F.
245 $aHumic Acids of the Amazonian Dark Earth Soils$bTerra Preta De Índio.
260 $aIn: WORLD CONGRESS OF SOIL SCIENCE, 18., 2006, Philadelphia. Abstracts... Madison: ASA: CSSA: SSSA$c2006
300 $c1 CD-ROM.
520 $aThe humic acid fraction (HA) of some Amazonian dark earth soils (Terra Preta de Índio) from Brazil were characterized using ultraviolet-visible (UV-Vis), Fourier transform diffuse reflectance infrared (DRIFT), fluorescence excitation and emission, electron paramagnetic resonance (EPR), and nuclear magnetic resonance (NMR) spectroscopy, thermogravimetric analysis, elemental composition, and measurement of acidity (total, carboxylic, phenolic). The HA fraction was extracted using the method recommended by the International Humic Substances Society (IHSS). The HA samples were separated in 3 groups based on the corresponding land use of the area of its origin: anthropogenic soils under forest (SAF), anthropogenic soils under agricultural use (SAC), non-anthropogenic soils under forest (SNAF). The SNAF soils were representative of Amazonian soils. They were collected in adjacent areas to the anthropogenic soil profiles. This way the SNAF group was a reference group for comparison purposes to the anthropogenic soil groups (SAF and SAC). Comparative (test t) and multivariate statistical analyses (factor analysis, cluster analysis, and discriminant analysis) were applied in the study. The anthropogenic soil groups (SAF and SAC) showed better fertility characteristics than the non-anthropogenic soils (SNAF) (pH: SAF = 5.1, SAC = 5.4, SNAF = 4.4; base saturation [V%]: SAF =59, SAC = 51, SNAF = 18; calculated cation exchange capacity [CEC]: SAF = 17.5, SAC = 17.2, SNAF = 9.5 cmolc/kg; available P: SAF = 116, SAC = 291, SNAF = 5 mg/kg). In the SAF and SAC soil groups ~44% of the total carbon was found in the humic fraction, ~32% in the humic acid fraction, and ~13% in the fulvic acid fraction. These values for the SNAF soils were 49, 19, 16%, respectively. The most relevant characteristics of the HA of anthropogenic soils, when compared to the non-anthropogenic ones were their superior reactivity, stability, and humification degree. The HA of the SAF and SAC groups featured higher total acidity (SAF = 612, SAC = 712, SNAF = 575 cmolkg) and carboxylic acidity (SAF = 435, SAC = 454, SNAF = 320 cmol/kg), higher concentration of organic free radicals (SAF = 4.07, SAC = 6.59, SNAF = 2.11 spin g-1 1017), higher thermogravimetric index (ITG) (SAF = 3.0, SAC = 3.3, SNAF = 2.3), lower E4/E6 ratio (SAF = 4.2, SAC = 4.2, SNAF = 6.0), higher aromaticity index (IADRIFT: SAF = 0.87, SAC = 0.85, SNAF = 0.77; NMR(%): SAF = 36, SAC = 39, SNAF = 25), higher hidrophobicity index (SAF = 0.37, SAC = 0.48, SNAF = 0.35), higher humification degree (A4/A1: SAF = 2.574, SAC = 3.313, SNAF = 1.713; I485/I400: SAF = 2.004, SAC = 2.161, SNAF = 1.510), and were more recalcitrant (recalcitrant C/labile C: SAF = 2.0, SAC = 2.0, SNAF = 1.0) than the HA of the SNAF group. Data also showed that there was difference between the HA of the SAF and SAC soil groups.
650 $aSoil
650 $aSolo
653 $aTerra Preta de Indio
700 1 $aMADARI, B. E.
700 1 $aMARTIN NETO, L.
700 1 $aCANELLAS, L. P.
700 1 $aSIMOES, M. L.
700 1 $aSILVA, W. T. L. da
700 1 $aMILORI, D. M. B. P.
700 1 $aRIBEIRO, L. P.
700 1 $aANJOS, L. H. C.
700 1 $aSANTOS, G. de A.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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| Registros recuperados : 40 | |
| 9. |  | RIBEIRO, L. P.; CUNHA, T. J. F.; PALMIERI, F.; MANZATTO, C. V. Diferenciação pedológica e alteração de rochas calcárias na região do Irecê-BA: estado da arte. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 27., 1999, Brasília, DF. Resumos [...]. Planaltina, DF: Embrapa Cerrados, 1999. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
|    |
| 11. | | TORRES, F. E.; SAGRILO, E.; TEODORO, P. E.; RIBEIRO, L. P.; CARGNELUTTI FILHO, A. Número de repetições para avaliação de caracteres em genótipos de feijão-caupi. Bragantia, Campinas, v. 74, n. 2, p. 161-168, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 15. | | TORRES, F. E.; VALLE, C. B. do; LEMPP, B.; TEODORO, P. E.; SANTOS, A. dos; RIBEIRO, L. P. Contribuição dos caracteres de qualidade da forragem ao teor de proteína bruta em Urochloa brizantha. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 3, p. 284-487, mar. 2016. Título em inglês: Forage quality trait contribution to crude protein content in Urochloa brizantha.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 16. | | RIBEIRO, L. P.; TARDIN, F. D.; MENEZES, C. B. de; BALDONI, A. B.; TEODORO, P. E.; BHERING, L. L. Combining yield, earliness and plant height in a single genotype: a proposal for breeding in grain sorghum (Sorghum bicolor L.). Revista de la Facultad de Ciencias Agrarias UNCuyo, v. 53, n. 1, p. 11-21, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Agrossilvipastoril; Embrapa Milho e Sorgo. |
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| 18. | | SANTOS, A. dos; CECCON, G.; RODRIGUES, E. V.; RIBEIRO, L. P.; CASTRO, K. S.; TEODORO, P. E. Genetic divergence between sweet sorghum genotypes by the WARD-MLM procedure, Bioscience Journal, v. 34, n. 5, p. 1326-1333 , Sept./Oct. 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agropecuária Oeste. |
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| 19. | | CUNHA, T. J. F.; MACEDO, J. R.; RIBEIRO, L. P.; PALMIERI, F.; FREITAS, P. L. de; AGUIAR, A. de C. Impacto do manejo convencional sobre propriedades fisicas e substancias humicas de solos sob cerrado. Ciência Rural, Santa Maria, v. 31, n. 1, p. 27-36, 2001.| Biblioteca(s): Embrapa Solos. |
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| 20. | | TEODORO, P. E.; BARROSO, L. M. A.; NASCIMENTO, M.; TORRES, F. E.; SAGRILO, E.; SANTOS, A. dos; RIBEIRO, L. P. Redes neurais artificiais para identificar genótipos de feijão-caupi semiprostrado com alta adaptabilidade e estabilidade fenotípicas. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 50, n. 11, p. 1054-1060, nov. 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Meio-Norte; Embrapa Unidades Centrais. |
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| Registros recuperados : 40 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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