|
|
|
|
|
| Oliveira Junior,Jairo Calderari de; Chiapini,Mariane; Nascimento,Alexandre Ferreira do; Couto,Eduardo Guimarães; Beirigo,Raphael Moreira; Vidal-Torrado,Pablo. |
| ABSTRACT The simultaneous occurrence of high levels of exchangeable sodium percentage (ESP) and alkalinity in soils imposes restrictions on plant development and affects physical properties such as porosity, bulk density, permeability, and hydraulic conductivity. Although sodic soils are frequent in the flood plain of the São Lourenço River, northern Pantanal, Brazil, few studies focus on their formation and classification, especially with regard to specific processes and detailed classification into lower categorical levels by the different systems available. The aim of this study was to identify the predominant pedogenetic processes occurring in sodic soils of the flood plain of the São Lourenço River to understand their genesis and assess how taxonomic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Planossolo; Luvissolo; Argilluviation; Ferrolysis; Micromorphology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100313 |
| |
|
|
| Chiapini,Mariane; Oliveira Junior,Jairo Calderari de; Schellekens,Judith; Almeida,Jaime Antonio de; Buurman,Peter; Vidal-Torrado,Pablo. |
| ABSTRACT The occurrence of dark subsurface horizons rich in organic matter (OM) associated with polychrome in the B horizon (yellowish over reddish hue) is common in soils from Southern Brazil. The formation of these horizons and the combination with such morphological attributes has not been properly documented, and neither has the cause effect relationship. Four soil profiles with such sombric-like horizons with a yellowish color at the upper part of the B horizon over red subsoil were studied in Southern Brazil. Results from micromorphology, extractable sesquioxide minerals, clay mineralogy and isomorphic substitution of Fe by Al in iron minerals showed that melanization, xanthization, bioturbation, moderate shrinking/swelling and moderate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Argissolos; Goethite; Dark subsurface horizon; Shiny peds; Matte aggregate faces. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000401401 |
| |
|
|
|
