Water Quality of Agricultural Drainage Systems in the Czech Republic — Options for Its Improvement

Fučík, Petr; Zajíček, Antonín; Duffková, Renata; Kvítek, Tomáš

doi:10.5772/59298

Cited by 11 publications

(13 citation statements)

References 59 publications

(88 reference statements)

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“…In general, the grassed catchments (KL, V1) had lower N-NO 3 concentration values than the ploughed catchments, both during RSs and ESs due to the well-known mitigation effect of grassland on nitrate leaching [12,15,42]. For both P forms monitored in drainage waters, no such differences were found.…”

Section: Dynamics Of N and P Concentrationsmentioning

confidence: 67%

“…In the recharge areas (upper slope parts, close to catchment boundaries), there are haplic and shallow haplic cambisols and cambic hyperskeletic leptosol (loamy sand/sandy loam) [41]. Artificial drainage is placed 0.9 to 1.1 m below the soil surface, drain spacing is between 10 to 18 m, and, since the drainage is built on slopes, the hydrologically contributing area (subcatchment) for a drainage group is far larger than the drained field itself [15,17,42,43]. The average annual precipitation at the sites ranged between 550 and 750 mm.…”

Section: Experimental Sitesmentioning

confidence: 99%

“…Intensively managed tile-drained landscapes have been found to have a considerable potential for N and P losses, with regard to different soil conditions and cropping systems, especially during periods with elevated flows [3][4][5][6][7][8][9]. Nutrient concentrations in drainage waters may change rapidly within a rainfall-runoff event due to variable pre-event and event soil/catchment moisture conditions, related soil biogeochemical processes [10][11][12][13], precipitation characteristics, and water flow paths into drainage and with different origin and residence times [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Incorporating Rainfall-Runoff Events into Nitrate-Nitrogen and Phosphorus Load Assessments for Small Tile-Drained Catchments

Fučík

Zajíček

Kaplická

et al. 2017

Water

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Rainfall-runoff events significantly influence water runoff and the loss of pollutants from tile-drained agricultural land. We monitored ten small (4 to 38 ha) tile-drained catchments in Czechia for three to five years (2012 to 2016). The discharge was measured continuously; a regular 14-day scheme of water quality monitoring was accompanied with event sampling provided by automatic samplers in 20 to 120 min intervals. A new semi-automated algorithm was developed for the identification of runoff events (RE) based on discharge and water temperature changes. We then quantified the share of RE on the total runoff and the N and P losses, and we compared six methods for nutrient load estimation on an annual and monthly basis. The results showed considerable differences among the monitored sites, seasons, and applied methods. The share of RE on N loads was on average 5% to 30% of the total annual load, whereas for P (dissolved and total), the share of RE was on average 10% to 80% on the total annual load. The most precise method for nutrient load estimation included the RE. The methods based on point monitoring of the discharge and water quality underestimated the loads of N by 10% to 20% and of P by 30% to 80%. The acquired findings are crucial for the improvement of nutrient load assessment in tile-drained catchments, as well as for the design of various mitigation measures on tile-drained agricultural land.

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Section: Dynamics Of N and P Concentrationsmentioning

confidence: 67%

Section: Experimental Sitesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Incorporating Rainfall-Runoff Events into Nitrate-Nitrogen and Phosphorus Load Assessments for Small Tile-Drained Catchments

Fučík

Zajíček

Kaplická

et al. 2017

Water

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“…Drainage water from all these drainage subsystems was monitored in site KL, which is the closing profile of the entire drainage group. The experimental methodology was described in detail by [13,14].…”

Section: Methodsmentioning

confidence: 99%

How does targeted grassing of arable land influence drainage water quality and farm economic indicators?

Zajíček¹,

Fučík²,

Duffková³

et al. 2018

Int. J. EI

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A 7-year experiment with grassing of arable land in the catchment recharge zone was conducted in a small (60 ha) agricultural tile-drained catchment (Bohemian-Moravian Highlands, Czech Republic). Together with water quality, the effect of increasing grassland area on selected farm economic indicators was evaluated. The area for grassing was delimitated by the method of relative soil infiltration vulnerability based on the analysis of five-digit valuated soil ecological unit code, available as .shp file at the scale 1:5000. Effect of grassing on farm budget was estimated by comparison of revenues (crop sales and subsidies) with technology costs of three different grassland area proportion within the agricultural land managed by the farm (1 200 ha). It was proved that nitrate concentrations in drainage water were influenced predominantly by the land use of the recharge zones within the drainage subcatchment. The grassing of arable land focused into proper catchment area (recharge zone) demonstrated a significant decrease in both NO 3 concentrations and N loads by 35% and 25%, respectively. On the other hand, increasing areas of grasslands would lead to decrease of landscape productive service, farm turnover and profit and the bigger dependence on subsidies. That´s why it is necessary to consider the non-productive functions of grasslands also as public service, taking into account the savings in water cleaning costs and the price of increased water retention. Presented approach come forward when setting the subsidies dealing with soil and water protective measures in agrarian landscape.

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“…The deep, permanent groundwater table in the recharge zones usually lies at the depth of several metres, whereas the perched, shallow groundwater table of recharge and transient zones occurs already at around 0.8-1.2 meters. Generally, the turnover of groundwater is quick [19].…”

Section: Study Areamentioning

confidence: 99%

Assessment of runoff nitrogen load reduction measures for agricultural catchments

et al. 2018

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Water quality in rural catchments is influenced by many societal and bio-physical factors (e.g. different pollution sources, land use and land cover changes). Good ecological status and surface water quality are currently challenged mainly due to different poorly identified pollution sources. The main objective of this study is to estimate the potential of different measures (land use changes and/or reduction in point sources) and their combinations in decreasing the nitrate-nitrogen load from Jankovský stream catchment. The eco-hydrological model SWIM, which simulates dynamics of nutrients in a catchment was used in the study. The simulations for scenario measures showed that nitrate-nitrogen loads at the outlet can be decreased more by reduction of municipal nitrate-nitrogen sources rather than by agricultural land-use change. Overall, the modeling results demonstrated that the most effective scenario was the combination of total reduction of municipal nitrate-nitrogen sources and agricultural land-use change.

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Water Quality of Agricultural Drainage Systems in the Czech Republic — Options for Its Improvement

Cited by 11 publications

References 59 publications

Incorporating Rainfall-Runoff Events into Nitrate-Nitrogen and Phosphorus Load Assessments for Small Tile-Drained Catchments

Incorporating Rainfall-Runoff Events into Nitrate-Nitrogen and Phosphorus Load Assessments for Small Tile-Drained Catchments

How does targeted grassing of arable land influence drainage water quality and farm economic indicators?

Assessment of runoff nitrogen load reduction measures for agricultural catchments

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