Simulations of water flow and nitrate transport in field lysimeters installed on gley soils (CROSBI ID 682740)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Filipović, Vilim ; Petošić, Dragutin ; Maloić, Mario ; Mustać, Ivan ; Šimunić, Ivan ; Filipović, Lana ; Maurović, Nada ; Igrc, Marina Diana ; Kranjčec, Filip
engleski
Simulations of water flow and nitrate transport in field lysimeters installed on gley soils
Nitrogen fertilizers, which cannot be completely absorbed by plants, are frequently used on agricultural soils in large amounts, and therefore leaching, usually closely linked with the soil water flow, is likely to occur. As computer models are becoming more important in the assessment of groundwater pollution, the objectives of this research were to assess water flow and nitrate transport in gley soils and to validate the HYDRUS-1D model based on the collected field data from lysimeters installed at the Biđ field (12 lysimeters at 6 locations). Extensive measurements of soil physical properties, lysimeter outflow and nitrate concentration were performed and coupled with the climatic data and collected information about the crop rotation and fertilizer application. The results confirmed good reliability of the model that fit the observed lysimeter water outflow and nitrate dynamics during 2014-2016 period. Increased nitrate concentrations were mostly observed during the period without crops, or during the winter/spring period with a large amount of rainfall. The results suggest that groundwater nitrate concentration may significantly increase due to agricultural practices, even in soils with heavier texture. The results also show that the tested model can be used as a tool for the prevention of groundwater pollution by indicating optimal application of different fertilizer (amount, timing, type).
water quality, numerical modelling, nitrate transport
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Podaci o prilogu
119-119.
2018.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of the 7th International Scientific and Professional Conference Water for all
Habuda Stanić, Mirna ; Šiljeg, Mario ; Lauš, Ivana
Osijek: Studio HS internet
978-953-7005-48-1
Podaci o skupu
Nepoznat skup
poster
29.02.1904-29.02.2096