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Nitrate Concentration in Leachate—Essential Information for Reducing Nitrogen Surplus and Groundwater Pollution from Agricultural Land in Slovakia

Author

Listed:
  • Radoslav Bujnovský

    (Water Research Institute, Nábr. Arm. Gen. L. Svobodu 5, 81249 Bratislava, Slovakia)

  • Štefan Koco

    (National Agricultural and Food Centre, Soil Science and Conservation Research Institute, Trenčianska 55, 82109 Bratislava, Slovakia
    Department of Geography and Applied Geoinformatics, Faculty of Human and Natural Sciences, Prešov University, Ul. 17. Novembra 1, 08001 Prešov, Slovakia)

  • Roman Cibulka

    (Water Research Institute, Nábr. Arm. Gen. L. Svobodu 5, 81249 Bratislava, Slovakia)

  • Andrea Vranovská

    (Water Research Institute, Nábr. Arm. Gen. L. Svobodu 5, 81249 Bratislava, Slovakia)

  • Dana Vrablíková

    (Water Research Institute, Nábr. Arm. Gen. L. Svobodu 5, 81249 Bratislava, Slovakia)

Abstract

The aim of the study was to detect nitrate concentrations in leachate within agricultural land in three districts of Slovakia, namely Nitra, Nové Zámky and Dunajská Streda as well as in the DEEPWATER-CE pilot area. Using the average values of leachable nitrogen in the period 2015–2018 and the long-term amount of percolated water, the nitrate concentration values in leachate were detected. In most defined groundwater monitoring sites, the current nitrogen surplus and corresponding nitrate concentration in leachate create preconditions for the gradual reduction of groundwater nitrate pollution. However, in some groundwater monitoring places, especially in the Nitra district, the nitrate concentration in leachate exceeds 50 mg L −1 , which is completely unacceptable from the point of groundwater pollution. In detected hot-spots, it is necessary to reduce the nitrogen surplus up to 15 kg ha −1 on average per year. In this sense, the nitrate concentration in leachate is an important indicator for the revision of existing measures in agriculture.

Suggested Citation

  • Radoslav Bujnovský & Štefan Koco & Roman Cibulka & Andrea Vranovská & Dana Vrablíková, 2022. "Nitrate Concentration in Leachate—Essential Information for Reducing Nitrogen Surplus and Groundwater Pollution from Agricultural Land in Slovakia," Agriculture, MDPI, vol. 12(4), pages 1-15, March.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:4:p:493-:d:784403
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    References listed on IDEAS

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    1. Petra Kuhr & Josef Haider & Peter Kreins & Ralf Kunkel & Björn Tetzlaff & Harry Vereecken & Frank Wendland, 2013. "Model Based Assessment of Nitrate Pollution of Water Resources on a Federal State Level for the Dimensioning of Agro-environmental Reduction Strategies," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(3), pages 885-909, February.
    2. José María Orellana-Macías & María Jesús Perles Roselló & Jesús Causapé, 2021. "A Methodology for Assessing Groundwater Pollution Hazard by Nitrates from Agricultural Sources: Application to the Gallocanta Groundwater Basin (Spain)," Sustainability, MDPI, vol. 13(11), pages 1-15, June.
    3. R. Kumar & F. Heße & P. S. C. Rao & A. Musolff & J. W. Jawitz & F. Sarrazin & L. Samaniego & J. H. Fleckenstein & O. Rakovec & S. Thober & S. Attinger, 2020. "Strong hydroclimatic controls on vulnerability to subsurface nitrate contamination across Europe," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
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