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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
19/07/2019 |
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Data da última atualização: |
19/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AQUINO, A. M. de; CANELLAS, L. P.; SILVA, A. P. S. da; CANELLAS, N. O.; LIMA, L. da S.; OLIVARES, F. L.; PICCOLO, A.; SPACCINI, R. |
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Afiliação: |
ADRIANA MARIA DE AQUINO, CNPAB; UENF; UENF; UENF; UENF; UENF; Università di Napoli Federico; Università di Napoli Federico. |
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Título: |
Evaluation of molecular properties of humic acids from vermicompost by 13 C CPMAS NMR spectroscopy and thermochemolysis GC MS |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of Analytical and Applied Pyrolysis, v .141, 104634, August 2019. |
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DOI: |
https://doi.org/10.1016/j.jaap.2019.104634 |
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Idioma: |
Inglês |
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Conteúdo: |
The molecular characteristics of different vermicomposts, produced with variable rates of cattle manure and cotton residues, and of related humic acids were determined by 13C-CPMAS NMR and Off-line pyrolysis THM-GC?MS. The analyses highlighted a composition of mature vermicomposts based on differential amounts of lignocellulosic fraction and alkyl compounds inherited from original biomasses, thus revealing a decrease of overall hydrophobic character at increasing amounts of cotton input. The evaluation of molecular parameters derived from both solid state NMR spectra and from the specific biomarkers released by thermochemolysis suggested that the humification process was mainly characterized by the selective preservation of specific lignin derivatives. The potential bioactive properties of humic acids were hence evaluated in a bioassays test on maize seedlings. The humic extracts showed a differential response in root growth-promoting effect, depending on the specific molecular features. The higher bioactivity found in humic components isolated from vermicompost with no or low addition of cotton residues, supported the role of the overall hydrophobic character and of the large content of bioavailable lignin units and nitrogen moieties. These results confirm that the combination of solid state NMR and thermochemolysis are valuable and efficient tools to assess the molecular quality of natural organic matter. The detailed molecular characterization of compost materials may hence represent a useful requirement to select the most suitable application of bulk biomasses and derived fractions for soil organic matter managements. MenosThe molecular characteristics of different vermicomposts, produced with variable rates of cattle manure and cotton residues, and of related humic acids were determined by 13C-CPMAS NMR and Off-line pyrolysis THM-GC?MS. The analyses highlighted a composition of mature vermicomposts based on differential amounts of lignocellulosic fraction and alkyl compounds inherited from original biomasses, thus revealing a decrease of overall hydrophobic character at increasing amounts of cotton input. The evaluation of molecular parameters derived from both solid state NMR spectra and from the specific biomarkers released by thermochemolysis suggested that the humification process was mainly characterized by the selective preservation of specific lignin derivatives. The potential bioactive properties of humic acids were hence evaluated in a bioassays test on maize seedlings. The humic extracts showed a differential response in root growth-promoting effect, depending on the specific molecular features. The higher bioactivity found in humic components isolated from vermicompost with no or low addition of cotton residues, supported the role of the overall hydrophobic character and of the large content of bioavailable lignin units and nitrogen moieties. These results confirm that the combination of solid state NMR and thermochemolysis are valuable and efficient tools to assess the molecular quality of natural organic matter. The detailed molecular characterization of compost materials may hen... Mostrar Tudo |
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Palavras-Chave: |
Cotton residues Humic extracts; Cow manure; Molecular characterization; Structura ctivity; Vermicompost. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02560naa a2200277 a 4500
001 2110756
005 2019-11-19
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jaap.2019.104634$2DOI
100 1 $aAQUINO, A. M. de
245 $aEvaluation of molecular properties of humic acids from vermicompost by 13 C CPMAS NMR spectroscopy and thermochemolysis GC MS$h[electronic resource]
260 $c2019
520 $aThe molecular characteristics of different vermicomposts, produced with variable rates of cattle manure and cotton residues, and of related humic acids were determined by 13C-CPMAS NMR and Off-line pyrolysis THM-GC?MS. The analyses highlighted a composition of mature vermicomposts based on differential amounts of lignocellulosic fraction and alkyl compounds inherited from original biomasses, thus revealing a decrease of overall hydrophobic character at increasing amounts of cotton input. The evaluation of molecular parameters derived from both solid state NMR spectra and from the specific biomarkers released by thermochemolysis suggested that the humification process was mainly characterized by the selective preservation of specific lignin derivatives. The potential bioactive properties of humic acids were hence evaluated in a bioassays test on maize seedlings. The humic extracts showed a differential response in root growth-promoting effect, depending on the specific molecular features. The higher bioactivity found in humic components isolated from vermicompost with no or low addition of cotton residues, supported the role of the overall hydrophobic character and of the large content of bioavailable lignin units and nitrogen moieties. These results confirm that the combination of solid state NMR and thermochemolysis are valuable and efficient tools to assess the molecular quality of natural organic matter. The detailed molecular characterization of compost materials may hence represent a useful requirement to select the most suitable application of bulk biomasses and derived fractions for soil organic matter managements.
653 $aCotton residues Humic extracts
653 $aCow manure
653 $aMolecular characterization
653 $aStructura ctivity
653 $aVermicompost
700 1 $aCANELLAS, L. P.
700 1 $aSILVA, A. P. S. da
700 1 $aCANELLAS, N. O.
700 1 $aLIMA, L. da S.
700 1 $aOLIVARES, F. L.
700 1 $aPICCOLO, A.
700 1 $aSPACCINI, R.
773 $tJournal of Analytical and Applied Pyrolysis, v .141, 104634, August 2019.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Biblioteca |
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Origem |
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Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
22/09/2008 |
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Data da última atualização: |
28/10/2022 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
ALVES, M. da S.; COELHO, E. F.; ANDRADE NETO, T. M. de; SANTANA, J. A. do V.; SANTANA JUNIOR, E. B. |
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Afiliação: |
Márcio da Silva Alves, UFRB; Eugênio Ferreira Coelho, CNPMF; Torquato Martins de Andrade Neto, UFRB; José Antônio do Vale Santana, UFRB; Edvaldo Bispo Santana Junior, UFRB. |
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Título: |
Application of calcium nitrate and urea by frtirrigation on banana crop and their efects on soil ph and electrical conductivity. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE OF AGRICULTURAL ENGINEERING; BRAZILIAN CONGRESS OF AGRICULTURAL ENGINEERING, 38.; INTERNATIONAL LIVESTOCK ENVIRONMENT SYMPOSIUM, 8., 2008, Iguassu Falls. [Foz do Iguaçu]: CIGR, 2008. |
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Idioma: |
Inglês |
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Notas: |
PAP0825.pdf. |
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Conteúdo: |
Fertirrigation is one effective mean of fertilizer application in irrigated agriculture since it combines water and nutrients, two necessary inputs for growth and production of crops. The objective of this work was to evaluate the effects of using two nitrogen sources by fertirrigation on variations of some soil chemical attributes (pH e CE) in a soil cultivated with banana crop during two production cycles. The experimental design followed a random block design with six treatments and five replications, with six plants per plot. Nitrate calcium and urea were the nitrogen sources that were applied as different combinations during the crop cycle. Results showed that nitrogen fertirrigation by the combination of urea and calcium nitrate did not increase soil acidity. None of urea and calcium nitrate combinations had effect on saturation electrical conductivity during the two cycles of banana crop. |
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Palavras-Chave: |
Fertirrigation. |
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Thesagro: |
Ph. |
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Thesaurus NAL: |
electrical conductivity. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/638922/1/PAP0825.pdf
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Marc: |
LEADER 01738nam a2200205 a 4500
001 1638922
005 2022-10-28
008 2008 bl uuuu u00u1 u #d
100 1 $aALVES, M. da S.
245 $aApplication of calcium nitrate and urea by frtirrigation on banana crop and their efects on soil ph and electrical conductivity.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE OF AGRICULTURAL ENGINEERING; BRAZILIAN CONGRESS OF AGRICULTURAL ENGINEERING, 38.; INTERNATIONAL LIVESTOCK ENVIRONMENT SYMPOSIUM, 8., 2008, Iguassu Falls. [Foz do Iguaçu]: CIGR$c2008
500 $aPAP0825.pdf.
520 $aFertirrigation is one effective mean of fertilizer application in irrigated agriculture since it combines water and nutrients, two necessary inputs for growth and production of crops. The objective of this work was to evaluate the effects of using two nitrogen sources by fertirrigation on variations of some soil chemical attributes (pH e CE) in a soil cultivated with banana crop during two production cycles. The experimental design followed a random block design with six treatments and five replications, with six plants per plot. Nitrate calcium and urea were the nitrogen sources that were applied as different combinations during the crop cycle. Results showed that nitrogen fertirrigation by the combination of urea and calcium nitrate did not increase soil acidity. None of urea and calcium nitrate combinations had effect on saturation electrical conductivity during the two cycles of banana crop.
650 $aelectrical conductivity
650 $aPh
653 $aFertirrigation
700 1 $aCOELHO, E. F.
700 1 $aANDRADE NETO, T. M. de
700 1 $aSANTANA, J. A. do V.
700 1 $aSANTANA JUNIOR, E. B.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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