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Registro Completo |
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
04/02/2022 |
Data da última atualização: |
11/03/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
PEREIRA, M. G.; SILVA, R. C. da; PINHEIRO JUNIOR, C. R.; OLIVEIRA, F. S. de; SILVA NETO, E. C. da; FONTANA, A.; PACHECO, A. A.; PEDRON, F. de A. |
Afiliação: |
MARCOS GERVASIO PEREIRA, UFRRJ; RAFAEL CIPRIANO DA SILVA, FUNCEME; CARLOS ROBERTO PINHEIRO JUNIOR, UFRRJ; FÁBIO SOARES DE OLIVEIRA, UFMG; EDUARDO CARVALHO DA SILVA NETO, UFRRJ; ADEMIR FONTANA, CNPS; ANDERSON ALMEIDA PACHECO, FUNDAÇÃO RENOVA; FABRÍCIO DE ARAÚJO PEDRON, UFSM. |
Título: |
Soil genesis on the soft slopes of ancient coastal plains, southeastern Brazil. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Catena, v. 210, 105894, Mar. 2022. |
DOI: |
https://doi.org/10.1016/j.catena.2021.105894 |
Idioma: |
Inglês |
Conteúdo: |
Coastal plains are characterized by low-elevation and small altitude variation and occupy an area of 57 million km2 worldwide. Ancient coastal plains that occur in the State of Rio de Janeiro (RJ), Brazil, have their pedological diversity neglected due to the generalization of some soil classes, underestimating the diversity of soils in these regions, hence limiting the evaluation for use and management. The aim of this study was to characterize the diversity of soils in a toposequence along an ancient coastal plain and to understand the pedogenetic processes involved. For this, soil pits were opened in the lower third (P1), middle third (P2), upper third (P3) and at the top (P4) of a toposequence. Soil profiles were characterized for morphological, physical, chemical, mineralogical and micromorphological properties. Profile P1 was classified as Planosol, being formed from colluvial sediments. In this profile, a lithological discontinuity was identified based on the irregularity of the values of silt/clay and coarse sand/fine sand ratios in subsurface. In this profile, limited drainage conditions were also observed. The main formation processes identified were ferrolysis and clay eluviation/illuviation, which promoted the increase of the textural gradient and thickening of the E horizon. Profiles P2 and P3 were classified as Ferralsols, were kaolinitic, with no redox conditions, and with predominance of eluviation/illuviation processes associated with pedoturbation, with a small increment of clay in the subsurface in both profiles. In profile P2, more so than in P3, there was still a strong influence of colluvial sediments, identified by the presence of a lithological discontinuity. For profile P4, a Plinthosol, located at the top of the toposequence, its formation was related to the action of weathering on the underlying acidic granite-gneiss rock. Despite the presence of plinthite, which denoted the occurrence of plinthization, the micromorphological description made it possible to state that it was a relictual condition whose formation occurred under past climatic conditions with higher water table level and which is currently being destroyed. MenosCoastal plains are characterized by low-elevation and small altitude variation and occupy an area of 57 million km2 worldwide. Ancient coastal plains that occur in the State of Rio de Janeiro (RJ), Brazil, have their pedological diversity neglected due to the generalization of some soil classes, underestimating the diversity of soils in these regions, hence limiting the evaluation for use and management. The aim of this study was to characterize the diversity of soils in a toposequence along an ancient coastal plain and to understand the pedogenetic processes involved. For this, soil pits were opened in the lower third (P1), middle third (P2), upper third (P3) and at the top (P4) of a toposequence. Soil profiles were characterized for morphological, physical, chemical, mineralogical and micromorphological properties. Profile P1 was classified as Planosol, being formed from colluvial sediments. In this profile, a lithological discontinuity was identified based on the irregularity of the values of silt/clay and coarse sand/fine sand ratios in subsurface. In this profile, limited drainage conditions were also observed. The main formation processes identified were ferrolysis and clay eluviation/illuviation, which promoted the increase of the textural gradient and thickening of the E horizon. Profiles P2 and P3 were classified as Ferralsols, were kaolinitic, with no redox conditions, and with predominance of eluviation/illuviation processes associated with pedoturbation, with a s... Mostrar Tudo |
Palavras-Chave: |
Ferrolysis; Lithological discontinuity; Micropedology; Pedogenesis. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02974naa a2200265 a 4500 001 2139674 005 2022-03-11 008 2022 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.catena.2021.105894$2DOI 100 1 $aPEREIRA, M. G. 245 $aSoil genesis on the soft slopes of ancient coastal plains, southeastern Brazil.$h[electronic resource] 260 $c2022 520 $aCoastal plains are characterized by low-elevation and small altitude variation and occupy an area of 57 million km2 worldwide. Ancient coastal plains that occur in the State of Rio de Janeiro (RJ), Brazil, have their pedological diversity neglected due to the generalization of some soil classes, underestimating the diversity of soils in these regions, hence limiting the evaluation for use and management. The aim of this study was to characterize the diversity of soils in a toposequence along an ancient coastal plain and to understand the pedogenetic processes involved. For this, soil pits were opened in the lower third (P1), middle third (P2), upper third (P3) and at the top (P4) of a toposequence. Soil profiles were characterized for morphological, physical, chemical, mineralogical and micromorphological properties. Profile P1 was classified as Planosol, being formed from colluvial sediments. In this profile, a lithological discontinuity was identified based on the irregularity of the values of silt/clay and coarse sand/fine sand ratios in subsurface. In this profile, limited drainage conditions were also observed. The main formation processes identified were ferrolysis and clay eluviation/illuviation, which promoted the increase of the textural gradient and thickening of the E horizon. Profiles P2 and P3 were classified as Ferralsols, were kaolinitic, with no redox conditions, and with predominance of eluviation/illuviation processes associated with pedoturbation, with a small increment of clay in the subsurface in both profiles. In profile P2, more so than in P3, there was still a strong influence of colluvial sediments, identified by the presence of a lithological discontinuity. For profile P4, a Plinthosol, located at the top of the toposequence, its formation was related to the action of weathering on the underlying acidic granite-gneiss rock. Despite the presence of plinthite, which denoted the occurrence of plinthization, the micromorphological description made it possible to state that it was a relictual condition whose formation occurred under past climatic conditions with higher water table level and which is currently being destroyed. 653 $aFerrolysis 653 $aLithological discontinuity 653 $aMicropedology 653 $aPedogenesis 700 1 $aSILVA, R. C. da 700 1 $aPINHEIRO JUNIOR, C. R. 700 1 $aOLIVEIRA, F. S. de 700 1 $aSILVA NETO, E. C. da 700 1 $aFONTANA, A. 700 1 $aPACHECO, A. A. 700 1 $aPEDRON, F. de A. 773 $tCatena$gv. 210, 105894, Mar. 2022.
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Embrapa Solos (CNPS) |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
08/02/2008 |
Data da última atualização: |
20/03/2013 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
PEREIRA, A. F.; ASSUNÇÃO, A.; OLIVEIRA, J. P.; XIMENES, P. A.; MELO, P. G. S. |
Afiliação: |
ANDRE FERREIRA PEREIRA, doutorando UFG; ARACELLE ASSUNÇÃO, doutorando UFG; JAISON PEREIRA DE OLIVEIRA, CNPAF; PAULO ALCANFOR XIMENES, UFG; PATRICIA GUIMARÃES SANTOS MELO, UFG. |
Título: |
Caracterização agronômica e nutricional na avaliação de genótipos de milho doce. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: CONGRESSO DE PESQUISA, ENSINO E EXTENSÃO, 4., 2007, Goiânia. Ciência, educação e compromisso social: anais... Goiânia: Universidade Federal de Goiás, 2007. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Conteúdo: |
Teve como objetivo, avaliar a produtividade de espigas com palhas, rendimento industrial, altura de plantas, alturas de espigas, a prolificidade e a variabilidade dos teores de minerais nos grãos verdes e de genótipos de milho doce. |
Palavras-Chave: |
Absorção atômica; Conpeex; Prolificidade. |
Thesagro: |
Milho Doce; Produtividade. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/79430/1/pl-2007.127.pdf
|
Marc: |
LEADER 00987nam a2200229 a 4500 001 1216034 005 2013-03-20 008 2007 bl uuuu u00u1 u #d 100 1 $aPEREIRA, A. F. 245 $aCaracterização agronômica e nutricional na avaliação de genótipos de milho doce. 260 $aIn: CONGRESSO DE PESQUISA, ENSINO E EXTENSÃO, 4., 2007, Goiânia. Ciência, educação e compromisso social: anais... Goiânia: Universidade Federal de Goiás$c2007 300 $c1 CD-ROM. 520 $aTeve como objetivo, avaliar a produtividade de espigas com palhas, rendimento industrial, altura de plantas, alturas de espigas, a prolificidade e a variabilidade dos teores de minerais nos grãos verdes e de genótipos de milho doce. 650 $aMilho Doce 650 $aProdutividade 653 $aAbsorção atômica 653 $aConpeex 653 $aProlificidade 700 1 $aASSUNÇÃO, A. 700 1 $aOLIVEIRA, J. P. 700 1 $aXIMENES, P. A. 700 1 $aMELO, P. G. S.
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