COMPARATIVE ANALYSIS OF THE QUALITY OF WATER FOR IRRIGATION IN THREE WATER SYSTEMS CONNECTED IN THE SEMIARID

Knowledge of the total content of soluble salts present in the water and the behavior of their dominant ions allows the use and management more adequately in use for irrigated agriculture. In this context, this study aimed to evaluate the dynamics of salts in surface and ground water for irrigation...

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Bibliographic Details
Published in:Revista brasileira de agricultura irrigada 2016-11, Vol.10 (6), p.1011
Main Authors: Camila Alves de Souza, Yara Rodrigues Araujo, José Ribeiro de Araújo Neto, Helba Araújo de Queiroz Palácio, Alves Barros, Bruno Eduardo
Format: Article
Language:Portuguese
Subjects:
Adsorption
Arid zones
Bicarbonates
Calcium
Calcium carbonate
Calcium chloride
Classification
Groundwater
Groundwater irrigation
Irrigation
Irrigation systems
Irrigation water
Magnesium
Rivers
Salinity
Salinity effects
Salts
Sampling
Semi arid areas
Semiarid zones
Sodium
Sulfates
Surface water
Water
Water use
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Summary:Knowledge of the total content of soluble salts present in the water and the behavior of their dominant ions allows the use and management more adequately in use for irrigated agriculture. In this context, this study aimed to evaluate the dynamics of salts in surface and ground water for irrigation purposes in three water systems in the Brazilian semiarid region: the Trussu weir, the perennial Excerpt from Trussu river and wells located along the river valley perennial. The study area is located in the basin of Alto Jaguaribe in the city of Iguatu, Ceará, Brazil. Samples were collected from March 2013 to March 2015, a total of 10 collections in 14 sampling stations. The parameters monitored were: sodium, calcium, magnesium, bicarbonate, carbonate, chloride and sulfate, the sodium adsorption normal ratios were calculated and corrected, besides the electric conductivity. Then applied the Piper diagram in the definition of the water classes. The waters were classified as chlorinated contains calcium, bicarbonated contains calcium, bicarbonated sodium for surface and ground water and chlorinated sodic into groundwater. Regarding the classification for irrigation results showed that surface water showed low risk of generating salinity problems, since the underground showed a risk of medium to high risk of causing salinity. As for sodicity surface water present no problems, since the underground are with sodicity problems can only be used on soils with adequate management of salts.
ISSN:1982-7679