Resumo

ORJUELA-MATTA, Helber M.; RUBIANO SANABRIA, Yolanda  e  CAMACHO-TAMAYO, Jesús Hernán. BEHAVIOR OF THE INFILTRATION ON AN OXISOL. rev.udcaactual.divulg.cient. [online]. 2010, vol.13, n.2, pp.31-39. ISSN 0123-4226.

The study of water infiltration processes into the soil helps to understand hydrological processes, soil degradation and solutes transport, with significant support to minimize runoff processes. The aim of this study was to evaluate the infiltration behaviour through Kostiakov, Kostiakov-Lewis and Philip models. This research was carried out at the Puerto López municipality (Meta-Colombia). The methodology included the implementation of 64 infiltration tests, using double ring infiltrometer, located in a rectangular grid sampling of 52m by 45m. At each grid point soil samples were taken at 10cm depth, to determine texture, bulk density and volumetric moisture. With the experimental infiltration curves adjustments were made to the empirical models for each point. For data analysis descriptive statistics were implemented in order to understand the behaviour and dispersion of soil properties. Correlations between soil properties and parameters of the estimated models were also established. The experimental data were better fit the Kostiakov-Lewis model, following the model of Kostiakov, with an R² of 0.99 and 0.98, respectively. The property of higher incidence over the infiltration was the bulk density, showing an inverse correlation with most of the parameters. The infiltration variability indicates the desirability of identifying management zones, to avoid a deficit or excess water, which can carry the crop to water stress or contribute to runoff processes.

Palavras-chave : Physical properties; infiltration models; water movement.

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