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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
11/12/2014 |
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Data da última atualização: |
07/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BINI, D.; SANTOS, C. A. dos; BERNAL, L. P. T.; ANDRADE, G.; NOGUEIRA, M. A. |
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Afiliação: |
DANIEL BINI, UEL; CRISTIANE ALCANTARA DOS SANTOS, UEL/USP; LAURA PRISCILA TOLEDO BERNAL, UEL; GALDINO ANDRADE, UEL; MARCO ANTONIO NOGUEIRA, CNPSO. |
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Título: |
Identifying indicators of C and N cycling in a clayey ultisol under different tillage and uses in winter. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Applied Soil Ecology, v. 76, p. 95-101, 2014. |
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ISSN: |
0929-1393 |
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DOI: |
10.1016/j.apsoil.2013.12.015 |
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Idioma: |
Inglês |
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Conteúdo: |
Although tropical and subtropical environments permit two cropping cycles per year, maintaining adequate mulching on the soil surface remains a challenge. In some cases, leaving soils fallow during the winter as an agricultural practice to control pathogens contributes to reduce soil mulching. The aim of this study was to assess attributes associated with C and N cycling in a soil under conventional and no-tillage management, with contrasting uses in winter: black oats (Avena strigosa Schreb) as cover crop or fallow. No-tillage increased total C and N, irrespective the winter crop. Cropping black oats under no-tillage resulted in more microbial biomass C and N, and glutaminase activity (15.2%, 65.2%, and 24%, respectively) than no-tillage under fallow. Under conventional tillage, winter cropping did not affect the attributes under study. Available P was higher in the no-tillage system (9.2?12.3 mg kg−1), especially when cropped with black oats, than in the conventional tillage system (4.8?6.6 mg kg−1). A multivariate analysis showed strong relationships between soil microbiological and chemical attributes in the no-tillage system, especially when cropped with black oats. Soil pH, dehydrogenase and acid phosphatase activities were the most effective at separating the soil use in winter. Microbial N, total N, microbial to total N ratio, available P, metabolic quotient (qCO2), and glutaminase activity were more effective at separating soil management regimes. The no-tillage system in association with winter oat cropping stimulated the soil microbial community, carbon and nutrient cycling, thereby helping to improve the sustainability of the cropping system. MenosAlthough tropical and subtropical environments permit two cropping cycles per year, maintaining adequate mulching on the soil surface remains a challenge. In some cases, leaving soils fallow during the winter as an agricultural practice to control pathogens contributes to reduce soil mulching. The aim of this study was to assess attributes associated with C and N cycling in a soil under conventional and no-tillage management, with contrasting uses in winter: black oats (Avena strigosa Schreb) as cover crop or fallow. No-tillage increased total C and N, irrespective the winter crop. Cropping black oats under no-tillage resulted in more microbial biomass C and N, and glutaminase activity (15.2%, 65.2%, and 24%, respectively) than no-tillage under fallow. Under conventional tillage, winter cropping did not affect the attributes under study. Available P was higher in the no-tillage system (9.2?12.3 mg kg−1), especially when cropped with black oats, than in the conventional tillage system (4.8?6.6 mg kg−1). A multivariate analysis showed strong relationships between soil microbiological and chemical attributes in the no-tillage system, especially when cropped with black oats. Soil pH, dehydrogenase and acid phosphatase activities were the most effective at separating the soil use in winter. Microbial N, total N, microbial to total N ratio, available P, metabolic quotient (qCO2), and glutaminase activity were more effective at separating soil management regimes. The no... Mostrar Tudo |
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Thesagro: |
Solo. |
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Thesaurus Nal: |
Ultisols. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02335naa a2200217 a 4500
001 2002322
005 2022-04-07
008 2014 bl uuuu u00u1 u #d
022 $a0929-1393
024 7 $a10.1016/j.apsoil.2013.12.015$2DOI
100 1 $aBINI, D.
245 $aIdentifying indicators of C and N cycling in a clayey ultisol under different tillage and uses in winter.$h[electronic resource]
260 $c2014
520 $aAlthough tropical and subtropical environments permit two cropping cycles per year, maintaining adequate mulching on the soil surface remains a challenge. In some cases, leaving soils fallow during the winter as an agricultural practice to control pathogens contributes to reduce soil mulching. The aim of this study was to assess attributes associated with C and N cycling in a soil under conventional and no-tillage management, with contrasting uses in winter: black oats (Avena strigosa Schreb) as cover crop or fallow. No-tillage increased total C and N, irrespective the winter crop. Cropping black oats under no-tillage resulted in more microbial biomass C and N, and glutaminase activity (15.2%, 65.2%, and 24%, respectively) than no-tillage under fallow. Under conventional tillage, winter cropping did not affect the attributes under study. Available P was higher in the no-tillage system (9.2?12.3 mg kg−1), especially when cropped with black oats, than in the conventional tillage system (4.8?6.6 mg kg−1). A multivariate analysis showed strong relationships between soil microbiological and chemical attributes in the no-tillage system, especially when cropped with black oats. Soil pH, dehydrogenase and acid phosphatase activities were the most effective at separating the soil use in winter. Microbial N, total N, microbial to total N ratio, available P, metabolic quotient (qCO2), and glutaminase activity were more effective at separating soil management regimes. The no-tillage system in association with winter oat cropping stimulated the soil microbial community, carbon and nutrient cycling, thereby helping to improve the sustainability of the cropping system.
650 $aUltisols
650 $aSolo
700 1 $aSANTOS, C. A. dos
700 1 $aBERNAL, L. P. T.
700 1 $aANDRADE, G.
700 1 $aNOGUEIRA, M. A.
773 $tApplied Soil Ecology$gv. 76, p. 95-101, 2014.
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Registro original: |
Embrapa Soja (CNPSO) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
17/07/2017 |
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Data da última atualização: |
16/10/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CADEMARTORI, P. H. G. de; CLARO, F. C.; MARINHO, N. P.; ZANONI, P. R. S.; MAGALHAES, W. L. E. |
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Afiliação: |
Pedro Henrique Gonzalez de Cademartori, Programa de Pós-Graduação em Engenharia Florestal (PPGEF), Universidade Federal do Paraná; Francine Ceccon Claro, Programa de Pós-Graduação em Engenharia e Ciência dos Materiais (PIPE), Universidade Federal do Paraná; Nelson Potenciano Marinho, Programa de Pós-Graduação em Engenharia Florestal (PPGEF), Universidade Federal do Paraná; PATRICIA RAQUEL SILVA ZANONI, CNPF; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Co-production of thermoplastic composites with solid residue from enzymatic hydrolysis of recycled paper sludge. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of Cleaner Production, v.162 p. 27-33, Sept. 2017. |
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DOI: |
https://doi.org/10.1016/j.jclepro.2017.06.009 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study is to enhance the use of agro-industrial byproducts and to address the environmental concerns by a novel method of co-production of thermoplastic composites with a solid residue constituting biorefinery. Accordingly, the reuse of 10e30 wt. % solid residues (SRH) from the enzymatic hydrolysis of recycled paper sludge (PS) in the production of thermoplastic composites with polypropylene (PP) was investigated. Thermal properties, water absorption, tensile strength and morphology of the prepared composites were evaluated. Higher thermal stability, rougher and wetter surface, and characteristics of a brittle material were observed in PP-SRH composites in comparison to the pristine PSPP composites and the neat PP. The water absorption increased with increasing amount of SRH, but in lower proportion compared to other common raw materials used in the preparation of composites. Use of SRH resulted in similar or better properties compared to the composites made with the unhydrolyzed paper sludge, suggesting that SRH has potential for recycling and utilization as filler in the development of thermoplastic composites. |
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Palavras-Chave: |
Compósito termoplástico; Estabilidade térmica; Molhabilidade; Paper mill sludge; Resource efficiency; Solid residue. |
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Thesagro: |
Resíduo Solido. |
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Thesaurus NAL: |
Composite materials; Pulp and paper sludge; Thermal stability; Wettability. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02147naa a2200313 a 4500
001 2072762
005 2017-10-16
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jclepro.2017.06.009$2DOI
100 1 $aCADEMARTORI, P. H. G. de
245 $aCo-production of thermoplastic composites with solid residue from enzymatic hydrolysis of recycled paper sludge.$h[electronic resource]
260 $c2017
520 $aThe aim of this study is to enhance the use of agro-industrial byproducts and to address the environmental concerns by a novel method of co-production of thermoplastic composites with a solid residue constituting biorefinery. Accordingly, the reuse of 10e30 wt. % solid residues (SRH) from the enzymatic hydrolysis of recycled paper sludge (PS) in the production of thermoplastic composites with polypropylene (PP) was investigated. Thermal properties, water absorption, tensile strength and morphology of the prepared composites were evaluated. Higher thermal stability, rougher and wetter surface, and characteristics of a brittle material were observed in PP-SRH composites in comparison to the pristine PSPP composites and the neat PP. The water absorption increased with increasing amount of SRH, but in lower proportion compared to other common raw materials used in the preparation of composites. Use of SRH resulted in similar or better properties compared to the composites made with the unhydrolyzed paper sludge, suggesting that SRH has potential for recycling and utilization as filler in the development of thermoplastic composites.
650 $aComposite materials
650 $aPulp and paper sludge
650 $aThermal stability
650 $aWettability
650 $aResíduo Solido
653 $aCompósito termoplástico
653 $aEstabilidade térmica
653 $aMolhabilidade
653 $aPaper mill sludge
653 $aResource efficiency
653 $aSolid residue
700 1 $aCLARO, F. C.
700 1 $aMARINHO, N. P.
700 1 $aZANONI, P. R. S.
700 1 $aMAGALHAES, W. L. E.
773 $tJournal of Cleaner Production$gv.162 p. 27-33, Sept. 2017.
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