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| Format: | Artículo científico |
| Sprache: | en |
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Universidade Estadual de Maringá
2015
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=303041016015 |
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Inhaltsangabe:
- Micromorphometric analysis of porosity changes in the surface crusts of three soils in the Piracicaba region, São Paulo State, Brazil Selene Cristina de Pierri Castilho Miguel Cooper Laura Fernandes Simões da Silva Agrociencias Pore morphology erosive rainfall structural changes The aim of this study was to micromorpholog ically analyze modifications in soil porosity due to the occurrence of erosive rainfall events. Thr ee types of soils, Typic Hapl udox, Typic Hapludult and Rhodic Kandiudalf, were analyzed to determine thei r 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 crus t 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. 2015 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303041016015 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.3 Vol.37