Modeling of soil water infiltration with rainfall simulator in different agricultural systems
ABSTRACT This study aimed to compare models for predicting soil water infiltration rate and erosive rates using a rainfall simulator in different systems of common bean (Phaseolus vulgaris L.) cultivation. The evaluated mathematical models were: Kostiakov, Kostiakov-Lewis, Green-Ampt and Horton. Infiltration tests were carried out considering six treatments: bean cultivated on contour with rock barriers spaced at 0.5 m between crop rows (BC1); bean cultivated on contour with rock barriers spaced at 1.0 m between crop rows (BC2); bean cultivated downslope (BDS); bean cultivated on contour with mulch (BCM); bare soil (BS) and soil under natural cover (NC). Four replicates were considered, totaling 24 field tests. Kostiakov-Lewis's equation showed the lowest values of standard error. Soil water infiltration rate was equal to 53.3 mm h-1 in the natural vegetation treatment and to 9.49 mm h-1 in the downslope treatment. Surface roughness and the time of beginning of surface runoff were significantly higher for the conditions with mulch cover.
Main Authors: | Santos,Thais E. M. dos, Souza,Edivan R. de, Montenegro,Abelardo A. A. |
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Format: | Digital revista |
Language: | English |
Published: |
Departamento de Engenharia Agrícola - UFCG
2016
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000600513 |
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