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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
18/12/2007 |
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Data da última atualização: |
16/09/2013 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
MOURA, M. de; AOUADA, F. A.; MATTOSO, L. H. C. |
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Título: |
Preparation of chitosan with controlled nanoparticles sizes |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: INTERNATIONAL MACROMOLECULAR COLLOQUIUM - IMC, 11.; INTERNATIONAL SYMPOSIUM ON NATURAL POLYMERS AND COMPOSITES - ISNaPol, 6., 2007, Gramado, RS. Natural polymers and composites. Anais... [São Carlos: ABPol, 2007]. não paginado. 1 CD-ROM. |
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Idioma: |
Inglês |
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Palavras-Chave: |
Evento. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/89480/1/Proci-07.00081.pdf
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Marc: |
LEADER 00580nam a2200133 a 4500
001 1030602
005 2013-09-16
008 2007 bl uuuu u00u1 u #d
100 1 $aMOURA, M. de
245 $aPreparation of chitosan with controlled nanoparticles sizes
260 $aIn: INTERNATIONAL MACROMOLECULAR COLLOQUIUM - IMC, 11.; INTERNATIONAL SYMPOSIUM ON NATURAL POLYMERS AND COMPOSITES - ISNaPol, 6., 2007, Gramado, RS. Natural polymers and composites. Anais... [São Carlos: ABPol, 2007]. não paginado. 1 CD-ROM.$c2007
653 $aEvento
700 1 $aAOUADA, F. A.
700 1 $aMATTOSO, L. H. C.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Solos. |
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Data corrente: |
08/08/2022 |
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Data da última atualização: |
04/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
OLIVEIRA, R. L. L. de; VASCONCELOS, S. S.; TEIXEIRA, W. G.; VIANA-JUNIOR, A. B.; CASTELLANI, D. C.; KATO, O. R. |
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Afiliação: |
RAIMUNDO LEONARDO LIMA DE OLIVEIRA, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; STEEL SILVA VASCONCELOS, CPATU; WENCESLAU GERALDES TEIXEIRA, CNPS; ARLEU BARBOSA VIANA-JUNIOR, MUSEU PARAENSE EMÍLIO GOELDI; DÉBORA CRISTINA CASTELLANI, NATURA INOVAÇÃO E TECNOLOGIA DE PRODUTOS LTDA; OSVALDO RYOHEI KATO, CPATU. |
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Título: |
Management practices affect soil carbon and physical quality in oil palm agroforestry systems in the Amazon. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Journal of Soil Science and Plant Nutrition, v. 22, n. 4, p. 4653-4668, Dec. 2022. |
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DOI: |
https://doi.org/10.1007/s42729-022-00947-0 |
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Idioma: |
Inglês |
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Conteúdo: |
Agroforestry systems (AFSs) with oil palm are expected to have better soil quality than monocultures of this crop. The variation in soil physical quality between oil palm management zones is related to carbon input and is well known in monocultures, but poorly studied in oil palm AFSs. Here we determined whether management practices change the carbon content and physical quality of soil in oil palm AFSs. We collected undisturbed and disturbed soil samples at different management zones (weeded circle, harvest path, leaf pile, and diversified strip) from the 0-5-, 5-10-, 10-20-, and 20-30-cm soil layers in oil palm AFSs in Eastern Amazon, Brazil. We determined the soil water retention curve, density, aggregation, penetration resistance, and carbon content. We performed principal component analysis to evaluate the influence of management on carbon content and physical properties in different soil layers. Overall, the management zones where there was no machinery traffic (weeded circle, leaf pile, and diversified strip) exhibited a higher carbon content and better physical quality in the surface soil layers (0-5 and 5-10 cm). These zones differed from the harvest path, which showed worse soil physical quality, i.e., lower soil aggregation, porosity, water retention, and carbon content, and greater soil density, compaction, and penetration resistance. Management practices that increase carbon levels on the harvest path should be prioritized to reduce the degradation of soil physical quality. Therefore, our results can help guide a more sustainable management of the soil in oil palm cultivation areas in the Amazon. MenosAgroforestry systems (AFSs) with oil palm are expected to have better soil quality than monocultures of this crop. The variation in soil physical quality between oil palm management zones is related to carbon input and is well known in monocultures, but poorly studied in oil palm AFSs. Here we determined whether management practices change the carbon content and physical quality of soil in oil palm AFSs. We collected undisturbed and disturbed soil samples at different management zones (weeded circle, harvest path, leaf pile, and diversified strip) from the 0-5-, 5-10-, 10-20-, and 20-30-cm soil layers in oil palm AFSs in Eastern Amazon, Brazil. We determined the soil water retention curve, density, aggregation, penetration resistance, and carbon content. We performed principal component analysis to evaluate the influence of management on carbon content and physical properties in different soil layers. Overall, the management zones where there was no machinery traffic (weeded circle, leaf pile, and diversified strip) exhibited a higher carbon content and better physical quality in the surface soil layers (0-5 and 5-10 cm). These zones differed from the harvest path, which showed worse soil physical quality, i.e., lower soil aggregation, porosity, water retention, and carbon content, and greater soil density, compaction, and penetration resistance. Management practices that increase carbon levels on the harvest path should be prioritized to reduce the degradation of soil physi... Mostrar Tudo |
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Palavras-Chave: |
Eastern Amazon; Propriedades físicas do solo; Qualidade do Solo. |
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Thesagro: |
Compactação do Solo. |
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Thesaurus NAL: |
Soil compaction; Soil physical properties; Soil quality. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02561naa a2200277 a 4500
001 2159082
005 2023-12-04
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s42729-022-00947-0$2DOI
100 1 $aOLIVEIRA, R. L. L. de
245 $aManagement practices affect soil carbon and physical quality in oil palm agroforestry systems in the Amazon.$h[electronic resource]
260 $c2022
520 $aAgroforestry systems (AFSs) with oil palm are expected to have better soil quality than monocultures of this crop. The variation in soil physical quality between oil palm management zones is related to carbon input and is well known in monocultures, but poorly studied in oil palm AFSs. Here we determined whether management practices change the carbon content and physical quality of soil in oil palm AFSs. We collected undisturbed and disturbed soil samples at different management zones (weeded circle, harvest path, leaf pile, and diversified strip) from the 0-5-, 5-10-, 10-20-, and 20-30-cm soil layers in oil palm AFSs in Eastern Amazon, Brazil. We determined the soil water retention curve, density, aggregation, penetration resistance, and carbon content. We performed principal component analysis to evaluate the influence of management on carbon content and physical properties in different soil layers. Overall, the management zones where there was no machinery traffic (weeded circle, leaf pile, and diversified strip) exhibited a higher carbon content and better physical quality in the surface soil layers (0-5 and 5-10 cm). These zones differed from the harvest path, which showed worse soil physical quality, i.e., lower soil aggregation, porosity, water retention, and carbon content, and greater soil density, compaction, and penetration resistance. Management practices that increase carbon levels on the harvest path should be prioritized to reduce the degradation of soil physical quality. Therefore, our results can help guide a more sustainable management of the soil in oil palm cultivation areas in the Amazon.
650 $aSoil compaction
650 $aSoil physical properties
650 $aSoil quality
650 $aCompactação do Solo
653 $aEastern Amazon
653 $aPropriedades físicas do solo
653 $aQualidade do Solo
700 1 $aVASCONCELOS, S. S.
700 1 $aTEIXEIRA, W. G.
700 1 $aVIANA-JUNIOR, A. B.
700 1 $aCASTELLANI, D. C.
700 1 $aKATO, O. R.
773 $tJournal of Soil Science and Plant Nutrition$gv. 22, n. 4, p. 4653-4668, Dec. 2022.
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