African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 5948

Full Length Research Paper

Groundwater quality monitoring for agriculture irrigated in Catolé Do Rocha, Paraíba State, Brazil

Evandro Franklin Mesquita
  • Evandro Franklin Mesquita
  • Universidade Federal da Paraíba, Center for Agricultural Sciences, Zip Code: 58.397-000, Areia, Paraíba. Brazil.
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Lourival Ferreira Cavalcante
  • Lourival Ferreira Cavalcante
  • 2Universidade Federal da Paraíba, Center for Agricultural Sciences, Zip Code: 58.397-000, Areia, Paraíba. Brazil.
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Francisco Thiago Coelho Bezerra
  • Francisco Thiago Coelho Bezerra
  • Universidade Federal da Paraíba, Center for Agricultural Sciences, Zip Code: 58.397-000, Areia, Paraíba. Brazil.
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Jackson Mesquita Alves
  • Jackson Mesquita Alves
  • Universidade Federal da Paraíba, Center for Agricultural Sciences, Zip Code: 58.397-000, Areia, Paraíba. Brazil.
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Jose Thyago Aires Souza
  • Jose Thyago Aires Souza
  • Universidade Federal da Paraíba, Center for Agricultural Sciences, Zip Code: 58.397-000, Areia, Paraíba. Brazil.
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Caio Silva Sousa
  • Caio Silva Sousa
  • Universidade Estadual da Paraíba, Center for Agrarian and Human Sciences (CCHA), Zip Code: 58.884 – 000, Catolé do Rocha, Paraíba, Brazil.
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Antonio Gustavo Luna Souto
  • Antonio Gustavo Luna Souto
  • Universidade Federal da Paraíba, Center for Agricultural Sciences, Zip Code: 58.397-000, Areia, Paraíba. Brazil.
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Danila Araújo de Lima
  • Danila Araújo de Lima
  • Universidade Federal da Paraíba, Center for Agricultural Sciences, Zip Code: 58.397-000, Areia, Paraíba. Brazil.
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  •  Received: 01 August 2018
  •  Accepted: 19 September 2018
  •  Published: 01 November 2018

Abstract

The electrical conductivity and of cations (Ca2+, Mg2+, Na+ and K+) and anions (Cl-, CO32-, HCO3- and SO42) contents of the water an Amazon well, from State University of Paraíba, Catolé do Rocha city, Paraíba State, Brazil, located in the semi-arid region of the Brazilian High Sertão were evaluated monthly from January to December of year 2017. Despite the increase in electrical conductivity from 0.89 to 1.16 mS cm-1 and sodium adsorption ratio (SAR) from 4.43 to 10.45 (mmol L-1)1/2 did not change the water quality to agriculture. With mean risk to saline (C2) and low risk to exercise sodicity at soil (S1), toxicity and nutritional imbalance to plants, the concentration of dissolved salts increased from 0.57 to 0.74 g L-1 between rainy and arid periods. This situation expresses a high increase of almost 30% in the total dissolved salts during the evaluated period and shows the need for systematic monitoring. Simulating the irrigation with a 400 mm blade of this water with 1.16 dS m-1, in 120 days, can add to soil 2,970 kg ha-1 of salts, of which 1,892; 633; 258 and 143 kg ha-1 are of the sodium, calcium, potassium and magnesium species, respectively.

Key words: Water quality, ionic components of water, salinity of water in well.