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Provedor de dados:  Agronomy
País:  Brazil
Título:  Micromorphometric analysis of porosity changes in the surface crusts of three soils in the Piracicaba region, São Paulo State, Brazil
Autores:  Castilho, Selene Pierri
Cooper, Miguel
Silva, Laura Fernanda Simões da
Data:  2015-08-03
Ano:  2015
Palavras-chave:  5.01.01.06-4 pore morphology
Erosive rainfall
Structural changes Manejo e Conservação do Solo
Resumo:  The aim of this study was to micromorphologically analyze modifications in soil porosity due to the occurrence of erosive rainfall events. Three types of soils, Typic Hapludox, Typic Hapludult and Rhodic Kandiudalf, were analyzed to determine their total porosity and the distribution and number of pores. The soils were tilled with a heavy disk and leveling harrow to ensure homogeneity of surface conditions at the beginning of the trial period and to simulate cropping conditions. The soils were kept uncovered during the trial period, and rainfall events with intensities greater than 25 mm h-1 were recorded. The results showed that all of the soils presented crust formation, influenced by the soil texture. NVef showed significant changes in total porosity, pore numbers and pore morphology, while LVAd and PVAd did not display marked modifications in these attributes. 
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19474

10.4025/actasciagron.v37i3.19474
Editor:  Universidade Estadual de Maringá
Relação:  http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19474/pdf_90
Formato:  application/pdf
Fonte:  Acta Scientiarum. Agronomy; v. 37, n. 3 (2015); 385-395

Acta Scientiarum. Agronomy; v. 37, n. 3 (2015); 385-395

1807-8621

1679-9275
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