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| 4. |  | OLIVEIRA, V. A. B. de; OLIVEIRA, G. M. de; GIGLIOTI, E. A.; IGARASHI, W. T.; SAAB, O. J. G. A. Desempenho de bicos rotativos e hidráulicos na aplicação aérea de fungicidas em cana-de-açúcar. Revista Brasileira de Tecnologia Aplicada nas Ciências Agrárias, Guarapuava, v. 4, n. 3, p. 111-122, 2011.| Biblioteca(s): Embrapa Agroenergia. |
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| 5. | | NEVES, C. S. V. J.; DECHEN, A. R.; FELLER, C.; SAAB, O. J. G. A.; PIEDADE, S. M. de S. Efeito do manejo do solo no sistema radicular de tangerineira `Ponca' Enxertada sobre limoeiro `Cravo' em Latossolo Roxo Revista Brasileira de Fruticultura, v.20, n.2, p.246-253, Cruz das Almas, 1998| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 6. | | IGARASHI, W. T.; SILVA, M. A. de A.; FRANÇA, J. A. de; IGARASHI, S.; SAAB, O. J. G. A. Estimation of soybean leaf wetness from meteorological variables. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 10, p. 1087-1092, Oct. 2018. Título em português: Estimativa do molhamento foliar da soja a partir de variáveis meteorológicas.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 7. | | FERREIRA, R. C.; SIBALDELLI, R. N. R.; MORAIS, H.; SAAB, O. J. G. A.; FARIAS, J. R. B. Spatial variability of meteorological observations and impacts on regional estimates of soybean grain productivity. Semina: Ciências Agrárias, Londrina, v. 38, n. 4, supl. 1, p. 2265-2278, 2017.| Biblioteca(s): Embrapa Soja. |
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| 8. | | NEVES, C. S. V. J.; DECHEN, A. R.; FELLER, C.; SAAB, O. J. G. A.; NILO GONZALEZ, M. G.; JORGE, L. A. C. Effect of rochard soil management on citrus root system and yield in a Brazilian oxisol=Effet du mode de gestion d'un oxisol du Brésil sur la production fruitière et le développement du système racinaire d'un citrus. In: CONGRES MONDIAL DE SCIENCE DU SOL = WORLD CONGRESS OF SOIL SCIENCE = BODENKUNDLICHER WELTKONGRESS-CONGRESO MUNDIAL DE LA CIENCIA DEL SUELO, 16., 1998, Montpellier. Résumés=Summaries... Montpellier: [ISSS:AISS:IBS:SICS], 1998. v. 2. p. 783.| Biblioteca(s): Embrapa Instrumentação. |
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| 9. | | MALVEZI, K. E. D.; SIBALDELLI, R. N. R.; PEREIRA NETO, O. C.; MORAES, L. A. C.; SAAB, O. J. G. A.; MOREIRA, A. Dissimilarity of parameterized maps generated in geostatistics and the assumption of an automatic software model in precision agriculture. Semina: Ciências Agrárias, Londrina, v. 41, n. 6, suplemento 2, p. 2873-2882, 2020. Título em português: Dissimilaridade de mapas gerados na geoestatística parametrizada e seu pressuposto modelo automático de software na agricultura de precisão.| Biblioteca(s): Embrapa Soja. |
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| 10. | | MARUBAYASHI, R. Y. P.; OLIVEIRA, R. B. de; FERREIRA, M. da C.; ROGGIA, S.; MORAES, E. D. de; SAAB, O. J. G. A. Insecticide spray drift reduction with different adjuvants and spray nozzles. Revista Brasileira de Engenharia Agrícola e Ambiental, v. 25, n. 4, p. 282-287, 2021.| Biblioteca(s): Embrapa Soja. |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
10/01/2007 |
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Data da última atualização: |
20/10/2021 |
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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: |
SIMPSON, A. J.; SONG, G.; SMITH, E.; LAM, B.; NOVOTNY, E. H.; HAYES, M. H. B. |
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Afiliação: |
ANDRE J. SIMPSON, UNIVERSITY OF TORONTO; GUIXUE SONG, UNIVERSITY OF LIMERICK; EMMA SMITH, UNIVERSITY OF TORONTO; BUUAN LAM, UNIVERSITY OF TORONTO; ETELVINO HENRIQUE NOVOTNY, CNPS; MICHAEL H. B. HAYES, UNIVERSITY OF LIMERICK. |
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Título: |
Unraveling the structural components of soil humin by use of solution-state nuclear magnetic resonance spectroscopy. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Environmental Science & Technology, v. 41, n. 3, p. 876-883, Feb. 2007. |
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DOI: |
https://doi.org/10.1021/es061576c |
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Idioma: |
Inglês |
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Conteúdo: |
Humin is the most recalcitrant and least understood fraction of soil organic matter. By definition, humin is that fraction not extracted by traditional aqueous alkaline soil extractants. Here we show that >_70% of the traditional humin fraction is solubilized when 0.1 M NaOH + 6 M urea and dimethyl sulfoxide (DMSO) + 6% H2SO4 are used in series after conventional extraction. Multidimensional solution-state NMR is applied in this study to gain an understanding of the major constituents present in these "solubilized humin fractions". The spectra indicated strong contributions from five main categories of components, namely. peptides, aliphatic species, carbohydrates, peptidoglycan, and lignin. Diffusion edited spectroscopy indicated that all species are present as macromolecules (or stable aggregate species). Although the distribution of the components is generally similar, peptidoglycan is present at significant levels supporting a higher microbial contribution to humin than to humic and fulvic fractions. The abundance of plant- and microbial-derived materials found does not exclude "humic" materials (e.g., oxidized lignin) or the presence of novel compounds at lower concentrations but suggests that a large proportion of humin is formed from classes of known compounds and parent biopolymers. |
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Palavras-Chave: |
Organic polymers. |
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Thesaurus NAL: |
Biopolymers; Carbohydrates; Peptides; Proteins; Soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02103naa a2200265 a 4500
001 1339170
005 2021-10-20
008 2007 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1021/es061576c$2DOI
100 1 $aSIMPSON, A. J.
245 $aUnraveling the structural components of soil humin by use of solution-state nuclear magnetic resonance spectroscopy.$h[electronic resource]
260 $c2007
520 $aHumin is the most recalcitrant and least understood fraction of soil organic matter. By definition, humin is that fraction not extracted by traditional aqueous alkaline soil extractants. Here we show that >_70% of the traditional humin fraction is solubilized when 0.1 M NaOH + 6 M urea and dimethyl sulfoxide (DMSO) + 6% H2SO4 are used in series after conventional extraction. Multidimensional solution-state NMR is applied in this study to gain an understanding of the major constituents present in these "solubilized humin fractions". The spectra indicated strong contributions from five main categories of components, namely. peptides, aliphatic species, carbohydrates, peptidoglycan, and lignin. Diffusion edited spectroscopy indicated that all species are present as macromolecules (or stable aggregate species). Although the distribution of the components is generally similar, peptidoglycan is present at significant levels supporting a higher microbial contribution to humin than to humic and fulvic fractions. The abundance of plant- and microbial-derived materials found does not exclude "humic" materials (e.g., oxidized lignin) or the presence of novel compounds at lower concentrations but suggests that a large proportion of humin is formed from classes of known compounds and parent biopolymers.
650 $aBiopolymers
650 $aCarbohydrates
650 $aPeptides
650 $aProteins
650 $aSoil
653 $aOrganic polymers
700 1 $aSONG, G.
700 1 $aSMITH, E.
700 1 $aLAM, B.
700 1 $aNOVOTNY, E. H.
700 1 $aHAYES, M. H. B.
773 $tEnvironmental Science & Technology$gv. 41, n. 3, p. 876-883, Feb. 2007.
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