Abstract
The hydraulic conductivity of a soil is the main parameter that determines its drainage capacity. However, its determination is of great importance for sizing in agricultural drainage systems. To determine the hydraulic conductivity of the soil in the presence of water table through the Auger-Hole. The experiment was carried out at Embrapa Manioc and Fruticulture (EMBRAPA), located in the municipality of Cruz das Almas-BA. In order to estimate the hydraulic conductivity, several empirical formulas have been proposed, such as Ernst's, which is the model that most closely approximates the soil situation studied. The hydraulic conductivity values for the studied soil obtained by the Auger-Hole method ranged from 0.24821 to 0.28544 m day-1. With an average value for hydraulic conductivity of 0.266835 m day-¹, being considered slow. The soil under analysis is classified in slow saturated hydraulic conductivity. The Auger-Hole method proved to be practical, fast, safe and easy to handle.
Highlights
For Gonçalves and Libardi (2013), the hydraulic conductivity of the soil is a property that expresses the ease with which the water moves in it, being of extreme importance to the agricultural use and, the production of the crops and the preservation of the soil and the environment.According to Gaspar (2006), the evaluation is performed through the permeability coefficient, which can be determined directly through field and laboratory tests
The hydraulic conductivity values for the studied soil obtained by the Auger-Hole method ranged from 0.24821 to 0.28544 m day-1
Guerra (2000) states that hydraulic conductivity is linked to a proportionality coefficient of the Darcy equation, which is used to determine the movement of fluids in porous media
Summary
According to Gaspar (2006), the evaluation is performed through the permeability coefficient, which can be determined directly through field and laboratory tests. This property is controlled by the porosity, structure and granulometry of soils. Guerra (2000) states that hydraulic conductivity is linked to a proportionality coefficient of the Darcy equation, which is used to determine the movement of fluids in porous media. In the soil, it expresses the ease with which the water moves in the profile
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