Determinação da Velocidade de Infiltração Básica de Água em Dois Solos do Noroeste do Estado do Paraná
Year: 2012
Type: article
Abstract: Knowledge on the speed of water infiltration in soil is relevant for the analysis of irrigation and drainage systems. Inadequate basic infiltration velocity may cause faults in the calculation of structures inherent to irrigation by aspersion. Current analysis produces information on the infiltration rate in two different soils in the state of Paraná, Brazil, with different clay rates. Red Dystroferric Nitossol contains 756.8 g kg-1 clay and Red Dystrophic Latosol contains 210 g kg-1 clay. Water infiltration velocity in soil was obtained by concentric rings infiltrometer at constant discharge, and data were adjusted by Kostiakov´s model. Sampling area was divided into thirty-six 2 x 2m sub-parcels. Water infiltration test was undertaken in the central part of each sub-parcel and soil density and porosity was determined. Water infiltration was calculated as a function of time till infiltration rate was constant. Basic infiltration rates were 31.85 and 15.38 mm h-1 for Red Dystroferric Nitossol (76% clay) and Red Dystrophic Latosol (21% clay). Kostiakov´s model was adequate for water infiltration rate estimates in the two types of soil under analysis.
Authors: José, Jefferson Vieira, Rezende, Roberto, Marques, Patricia Angélica Alves, Lourenço de Freitas, Paulo Sérgio, Alves, Daniel Soares
Institutions: Universidade Estadual de Maringá, Universidade de São Paulo
Language: Portuguese
Topic: Soil and Unsaturated Flow
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W1521200243