Qualidade da água de irrigação na cultura do tomate de mesa no município de Goianápolis-GO
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Data
2015
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Resumo
The objective of this study was to analyze the physico-chemical variables of water
quality for irrigation in the cultivation of tomato in the city of Goianápolis - GO. Five
points were georeferenced to collect water, made in January, March and May 2012.
Chemical analysis was conducted at the University Unit for Science and Technology -
UnUCET State University of Goiás - UEG, Anápolis - GO and evaluated under the
following aspects: dissolved oxygen, pH, iron, turbidity, calcium, magnesium, electrical
conductivity and sodium. It was concluded that the water quality of the measured
points are classified as Class 2 water. The oxygen level was different in the rainy season
to dry. The pH had a small variation, but the values found were within the limits set for
irrigation purposes (6,33 to 6,82). The iron concentration (0.08 to 0.10 mgL -1 ) meet the
Standards allowed, the risk of clogging irrigation emitters by the evaluated propertiesis
reduced. The water turbidity was high at the beginning of the rains (193 NTU), most of
the collections over the water was cleaner (7,35 NTU). The evaluation of electrical
conductivity (0,07 to 0,08 dS. m -1 ), calcium (13,64 to 18,28 mg L -1 ) and magnesium
(2,56 to 8,19 mg L -1 ) demonstrated that some values were higher than allowed, but not
hurt production in tomato. Sodium values are within the limits, no problems
occurringin soil salinity. The results demonstrate that it is feasible to irrigation in
tomato using water assessed.
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Qualidade da água, Tomate de mesa, Sistemas de irrigação, Water quality, Irrigation systems, Tomato
Citação
BORGES, Sandriane Araújo; CUNHA, Ananda Helena Nunes; SILVA, Sandra Máscimo da Costa e; VIEIRA, Jonas Alves; NASCIMENTO, Abadia dos Reis. Qualidade da água de irrigação na cultura do tomate de mesa no município de Goianápolis-GO. Multi-Science Journal, Urutaí, v. 1, n. 2, p. 74-82, 2015.