Cuiabá River water quality for irrigation, in the metropolitan region of Mato Grosso capital
DOI:
https://doi.org/10.6008/CBPC2179-6858.2019.006.0021Keywords:
Agriculture, Contamination, Green beltAbstract
Irrigated agriculture promotes increased productivity in agricultural systems, however, there is a need to observe both the quantity and the quality of the water available in order to facilitate the food production and safety and water to be used. Therefore, this study aimed to evaluate the risk of salinity, sodicity, infiltration and toxicity, in order to diagnose and monitor the water quality of the Cuiabá River, in the metropolitan region of Cuiabá. It was analyzed the main physical, chemical and microbiological variables that define the quality of irrigation water: temperature, pH, electric conductivity, sodium adsorption ratio, Ca2+, Mg2+, Na+, K+, Cl-, SO4++, N-, P-total, total solids, Turbidity and Escherichia coli. SEMA data were used for five points along the Cuiabá River urban route in January 2011 to November 2017, covering both the rainfall and drought seasons. In the observed points, there were not identified restrictions on water use in irrigation with regard to physical and chemical variables. Most of the points have restrictions on the microbiological aspect, demonstrating, therefore, the necessity of further investigations regarding the use and sources contaminants in these waters.
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