|
|
Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
26/07/2023 |
Data da última atualização: |
15/01/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
PESSOA, T. N.; FERREIRA, T. R.; PIRES, L. F.; COOPER, M.; UTEAU, D.; PETH, S.; VAZ, C. M. P.; LIBARDI, P. L. |
Afiliação: |
University of São Paulo-“Luiz de Queiroz” College of Agriculture; Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM); Laboratory of Physics Applied to Soils and Environmental Sciences, State University of Ponta Grossa; Department of Soil Science, University of São Paulo-“Luiz de Queiroz” College of Agriculture; Department of Soil Science, Faculty of Ecological Agriculture, University of Kassel; Institute of Soil Science, Leibniz Universität Hannover; CARLOS MANOEL PEDRO VAZ, CNPDIA; Department of Soil Science, University of São Paulo-“Luiz de Queiroz” College of Agriculture. |
Título: |
X-ray Microtomography for Investigating Pore Space and Its Relation to Water Retention and Conduction in Highly Weathered Soils. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Agriculture, v. 13, n. 28, 2023. |
Páginas: |
14 p. |
DOI: |
https://doi.org/10.3390/agriculture13010028 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Soil structure controls soil hydraulic properties and is linked to soil aggregation processes. The aggregation processes of Oxisols are controlled mainly by clay mineralogy and biological activity. Computed microtomography (µCT) may be a tool for improving the knowledge of the hydraulic properties of these soils. Thus, this study brings an advance in the use of 3D image analysis to better comprehend the water behavior in tropical soils. In this work, three Oxisols were studied with the objective to (i) characterize the soil water retention curve (SWRC), the corresponding pore size frequency, and the saturated hydraulic conductivity (Ksat); (ii) use µCT to obtain, based on 3D images of soil structure and pore size distribution; and (iii) correlating parameters from SWRCs, Ksat, and µCT with other physical-hydric, chemical, and mineralogical attributes. Rhodic Haplustox—P1, Anionic Acrustox—P2, and Typic Hapludox—P3 were the three studied Oxisols. The differences among the SWRCs were related to the microgranular and block type’s structure morphology, which modified the soil pore space. The pore size frequency was calculated from SWRCs for pores with diameters of 87 ± 2 µm in P1, 134 ± 11µm in P2, and 175 ± 18 µm in P3. Pore size distribution from µCT was determined for the range of 20–100 µm, mainly with the highest percentages: 12 ± 1.09% for P1 and 12 ± 1.4% for P2. Pore connectivity was assessed from images by calculating Euler Numbers (EN), with the differences related to the biggest pore (ENbigpore): P1 (−44,223 ± 10,096) and P2 (−44,621 ± 12,573) showed more connected pores (ENbigpore) in comparison to P3 (−11,597 ± 6935). The parameter ENbigpore was decisive in understanding the water retention and conduction processes of the studied soils. The better-connected pore space increased Ksat in P1 (220 ± 0.05 mm h−1 ) and P2 (189 ± 0.1 mm h−1 ) in comparison to P3 (20 ± 0.3 mm h−1 ) and modified the shape of SWRCs. MenosAbstract: Soil structure controls soil hydraulic properties and is linked to soil aggregation processes. The aggregation processes of Oxisols are controlled mainly by clay mineralogy and biological activity. Computed microtomography (µCT) may be a tool for improving the knowledge of the hydraulic properties of these soils. Thus, this study brings an advance in the use of 3D image analysis to better comprehend the water behavior in tropical soils. In this work, three Oxisols were studied with the objective to (i) characterize the soil water retention curve (SWRC), the corresponding pore size frequency, and the saturated hydraulic conductivity (Ksat); (ii) use µCT to obtain, based on 3D images of soil structure and pore size distribution; and (iii) correlating parameters from SWRCs, Ksat, and µCT with other physical-hydric, chemical, and mineralogical attributes. Rhodic Haplustox—P1, Anionic Acrustox—P2, and Typic Hapludox—P3 were the three studied Oxisols. The differences among the SWRCs were related to the microgranular and block type’s structure morphology, which modified the soil pore space. The pore size frequency was calculated from SWRCs for pores with diameters of 87 ± 2 µm in P1, 134 ± 11µm in P2, and 175 ± 18 µm in P3. Pore size distribution from µCT was determined for the range of 20–100 µm, mainly with the highest percentages: 12 ± 1.09% for P1 and 12 ± 1.4% for P2. Pore connectivity was assessed from images by calculating Euler Numbers (EN), with the differences r... Mostrar Tudo |
Palavras-Chave: |
Pore connectivity; Pore size distribution; Soil water retention curve. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/259608/1/P-X-ray-Microtomography-for-Investigating-Pore-Space-and-Its-Relation-to-Water-Retention-and-Conduction-in-Highly-Weathered-Soils.pdf
|
Marc: |
LEADER 02809naa a2200265 a 4500 001 2155317 005 2024-01-15 008 2023 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3390/agriculture13010028$2DOI 100 1 $aPESSOA, T. N. 245 $aX-ray Microtomography for Investigating Pore Space and Its Relation to Water Retention and Conduction in Highly Weathered Soils.$h[electronic resource] 260 $c2023 300 $a14 p. 520 $aAbstract: Soil structure controls soil hydraulic properties and is linked to soil aggregation processes. The aggregation processes of Oxisols are controlled mainly by clay mineralogy and biological activity. Computed microtomography (µCT) may be a tool for improving the knowledge of the hydraulic properties of these soils. Thus, this study brings an advance in the use of 3D image analysis to better comprehend the water behavior in tropical soils. In this work, three Oxisols were studied with the objective to (i) characterize the soil water retention curve (SWRC), the corresponding pore size frequency, and the saturated hydraulic conductivity (Ksat); (ii) use µCT to obtain, based on 3D images of soil structure and pore size distribution; and (iii) correlating parameters from SWRCs, Ksat, and µCT with other physical-hydric, chemical, and mineralogical attributes. Rhodic Haplustox—P1, Anionic Acrustox—P2, and Typic Hapludox—P3 were the three studied Oxisols. The differences among the SWRCs were related to the microgranular and block type’s structure morphology, which modified the soil pore space. The pore size frequency was calculated from SWRCs for pores with diameters of 87 ± 2 µm in P1, 134 ± 11µm in P2, and 175 ± 18 µm in P3. Pore size distribution from µCT was determined for the range of 20–100 µm, mainly with the highest percentages: 12 ± 1.09% for P1 and 12 ± 1.4% for P2. Pore connectivity was assessed from images by calculating Euler Numbers (EN), with the differences related to the biggest pore (ENbigpore): P1 (−44,223 ± 10,096) and P2 (−44,621 ± 12,573) showed more connected pores (ENbigpore) in comparison to P3 (−11,597 ± 6935). The parameter ENbigpore was decisive in understanding the water retention and conduction processes of the studied soils. The better-connected pore space increased Ksat in P1 (220 ± 0.05 mm h−1 ) and P2 (189 ± 0.1 mm h−1 ) in comparison to P3 (20 ± 0.3 mm h−1 ) and modified the shape of SWRCs. 653 $aPore connectivity 653 $aPore size distribution 653 $aSoil water retention curve 700 1 $aFERREIRA, T. R. 700 1 $aPIRES, L. F. 700 1 $aCOOPER, M. 700 1 $aUTEAU, D. 700 1 $aPETH, S. 700 1 $aVAZ, C. M. P. 700 1 $aLIBARDI, P. L. 773 $tAgriculture$gv. 13, n. 28, 2023.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Unidades Centrais. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
06/04/1994 |
Data da última atualização: |
30/06/2009 |
Autoria: |
VELOSO, R. F. |
Afiliação: |
EMBRAPA-DDT. |
Título: |
Controle financeiro e contabilidade de custo em um empreendimento agrícola. |
Ano de publicação: |
1984 |
Fonte/Imprenta: |
Brasília, DF: EMBRAPA-DDT, 1984. |
Páginas: |
71 p. |
Idioma: |
Português |
Notas: |
Estudo de caso conduzido em um condominio agricola no Distrito Federal, no periodo de maio de 1980 a junho de 1982. |
Palavras-Chave: |
Administration; Agricultural production; Aspecto economico; Costs; Economic situation; Management; Production. |
Thesagro: |
Administração; Administração Financeira; Agricultura; Contabilidade; Custo; Produção Agrícola. |
Thesaurus NAL: |
accounting; agriculture; finance. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00935nam a2200313 a 4500 001 1088091 005 2009-06-30 008 1984 bl uuuu 00u1 u #d 100 1 $aVELOSO, R. F. 245 $aControle financeiro e contabilidade de custo em um empreendimento agrícola. 260 $aBrasília, DF: EMBRAPA-DDT$c1984 300 $a71 p. 500 $aEstudo de caso conduzido em um condominio agricola no Distrito Federal, no periodo de maio de 1980 a junho de 1982. 650 $aaccounting 650 $aagriculture 650 $afinance 650 $aAdministração 650 $aAdministração Financeira 650 $aAgricultura 650 $aContabilidade 650 $aCusto 650 $aProdução Agrícola 653 $aAdministration 653 $aAgricultural production 653 $aAspecto economico 653 $aCosts 653 $aEconomic situation 653 $aManagement 653 $aProduction
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|