Micromorphometric analysis of porosity changes in the surface crusts of three soils in the Piracicaba region, São Paulo State, Brazil

Autores

  • Selene Pierri Castilho Universidade de São Paulo Autor
  • Miguel Cooper Universidade de São Paulo Autor
  • Laura Fernanda Simões da Silva Universidade de São Paulo Autor

DOI:

https://doi.org/10.4025/actasciagron.v37i3.19474

Palavras-chave:

pore morphology, erosive rainfall, structural changes

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.

 

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Biografia do Autor

  • Selene Pierri Castilho, Universidade de São Paulo

    Departamento de Ciência do solo

    Ãrea de Conservação de Solos

  • Miguel Cooper, Universidade de São Paulo

    Departamento de Ciência do Solo

    Ãrea: Conervação do Solo

  • Laura Fernanda Simões da Silva, Universidade de São Paulo

    Departamento de Ciência do Solo

    Ãrea: Conervação do Solo

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Publicado

2015-08-03

Edição

Seção

Solos

Como Citar

Micromorphometric analysis of porosity changes in the surface crusts of three soils in the Piracicaba region, São Paulo State, Brazil. (2015). Acta Scientiarum. Agronomy, 37(3), 385-395. https://doi.org/10.4025/actasciagron.v37i3.19474

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