High flow event induced the subsurface transport of particulate phosphorus and its speciation in agricultural tile drainage system

Jiang, Xiaoqian; Livi, Kenneth J. T.; Arenberg, Mary R.; Ai, Chen; Chen, Kai-Yue; Gentry, Lowell E.; Li, Zhe; Xu, Suwei; Arai, Yuji

doi:10.1016/j.chemosphere.2020.128147

Cited by 30 publications

(11 citation statements)

References 88 publications

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“…The results of this study highlight that coupled characterization of flow pathway and water source are important for predicting DRP concentrations in tile drainage. Few studies have assessed the impact of flow pathway and source connectivity dynamics on tile P concentrations during storm events (Jiang et al., 2021). Previous studies have either used total Q , preferential flow, or new/old water estimates to predict P concentrations and loading in tiles.…”

Section: Resultsmentioning

confidence: 99%

“…Tile drainage networks in fine‐textured soils are often the primary field‐scale discharge pathway during stormflows and can disproportionately affect watershed‐scale water and nutrient budgets (King et al., 2014; Schilling et al., 2020; Williams et al., 2015). Tile‐drainage nutrient loadings during stormflows reflect variability in flow pathway dynamics and source water connectivity (Jiang et al., 2021; King et al., 2015; Ortega‐Pieck et al., 2020; Pluer et al., 2020; Smith & Capel, 2018). For the purposes of this study, flow pathway refers to the subsurface flow domain such as percolation through micropores in the soil matrix or preferential transport through macropores, and source connectivity refers to sources of water such as event water (e.g., precipitation or irrigation water), or pre‐event water (e.g., water residing in the soil matrix prior to stormflows).…”

Section: Introductionmentioning

confidence: 99%

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Quantifying hydrologic pathway and source connectivity dynamics in tile drainage: Implications for phosphorus concentrations

Nazari

Ford

King

2021

Vadose Zone Journal

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Flowpathways and source water connectivity dynamics are widely recognized to affect tile-drainage water quality. In this study, we developed and evaluated a framework that couples event-based hydrograph recession and specific conductance endmember mixing analysis (SC-EMMA) to provide a more robust framework for quantifying both flow pathway dynamics and source connectivity of drainage water in tile-drained landscapes. High-frequency (30-min) flow and conductivity data were collected from an edge-of-field tile main located in northwestern Ohio, and the newly developed framework was applied for data collected in water year 2019. Multiple linear regression (MLR) analysis was used to evaluate the impact of pathwayconnectivity dynamics on flow-weighted mean dissolved reactive P (DRP) concentrations, which were collected as part of the USDA-ARS edge-of-field monitoring network. The hydrograph recession and SC-EMMA results highlighted intra-and interevent differences between quick (preferential) flow and new (precipitation) water transported during events, challenging a common assumption that new water reflects drainage through preferential flow paths. The analysis of hydrologic flow pathways demonstrated matrix-macropore exchange (Q quick-old ), preferential flow of new water (Q quick-new ), slow flow of old water (Q slow-old ), and slow flow of new water (Q slow-new ) contributed 9, 39, 42, and 10% to tile discharge, on average, with interevent variability. Matrix water that is transported to tile drains via macropore flowpaths was found to be activated throughout the year, even under drier antecedent conditions, suggesting that matrix-macropore exchange was more sensitive to within-event hydrological processes as compared with antecedent conditions. The MLR results highlighted that pathway-connectivity hydrograph fractions improved prediction of DRP concentrations, although improvement may be more pronounced in landscapes with higher rates of matrix-macropore exchange.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantifying hydrologic pathway and source connectivity dynamics in tile drainage: Implications for phosphorus concentrations

Nazari

Ford

King

2021

Vadose Zone Journal

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“…In fact, at the field-scale, numerous studies have documented how tile drainage is connected to the surface through macropores and other preferential flow paths (Smith et al, 2015;Williams et al, 2016a;Macrae et al, 2019). Storm events have been found to accelerate the transport of particulate and dissolved nutrient species in tile drainage (Jiang et al, 2021). Significantly greater precipitation and runoff occurred during the months following the main nutrient loading period (Aug-Dec) in 2018 compared to 2019.…”

Section: Connections Between Tile Drainage Stream Discharge and Nutrient Transportmentioning

confidence: 99%

“…Results were compared for two recent years, representing relatively normal (2018) and wet (2019) March-July conditions, which led to moderate, and severe algal bloom severity in the WLEB, respectively. Due to the strong surface connection that tile drainage creates (e.g., Smith et al, 2015;Jiang et al, 2021), we hypothesize that watersheds with the greatest percentages of tile drainage not only have greater SRP and nitrate concentrations and subsequent loads but also display more chemostatic C-Q behavior, especially during the main nutrient loading season (March-July).…”

Section: Introductionmentioning

confidence: 99%

Tile Drainage Increases Total Runoff and Phosphorus Export During Wet Years in the Western Lake Erie Basin

Miller

Lyon

2021

Front. Water

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Artificial subsurface (tile) drainage is used in many agricultural areas where soils have naturally poor drainage to increase crop yield and field trafficability. Studies at the field scale indicate that tile drains disproportionately export large soluble reactive phosphorus (SRP) and nitrate loads to downstream waterbodies relative to other surface and subsurface runoff pathways, but knowledge gaps remain understanding the impact of tile drainage to nutrient export at watershed scales. The Western Lake Erie Basin is susceptible to summertime eutrophic conditions driven by non-point source nutrient pollution due to a shallow mean water depth and land use dominated by agriculture. The purpose of this study is to analyze the impact of tile drainage on downstream discharge, nutrient concentrations, and nutrient loads for 16 watersheds that drain to the Western Lake Erie Basin. Daily discharge and nutrient concentrations were summarized annually and during the main nutrient loading period (March–July) for 2 years representing normal nutrient loading period precipitation (2018) and above normal precipitation (2019). Results indicate positive correlations between watershed tile drainage percentage and runoff metrics during 2019, but no relationship during 2018. Additionally, SRP concentration and load were positively correlated to watershed tile drainage percentage in 2019, but not in 2018. Watershed tile drainage percentage was correlated with nitrate concentration and load for both years. The SRP concentration-discharge relationships suggested relatively weak, chemodynamic behavior, implying a slight enriching effect where SRP concentrations were greater at higher stream discharge conditions during both years. In contrast, nitrate concentration-discharge relationships suggested strong, enriching chemodynamic behavior during 2018, but chemostatic behavior during 2019. The difference in SRP and nitrate export patterns in the 2 years analyzed highlights the importance of implementing appropriate best management practices that target specific nutrients and treat primary delivery pathways to effectively improve downstream aquatic health conditions.

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“…Peak areas of NMR spectra were calculated by integration on spectra processed with 7 and 2 Hz line broadening, using MestRenova 10.0.2. Briefly, the total peak area was set equal to the concentration of NaOH-EDTA-extracted P, and the concentration of P species was calculated based on its integrated area (Jiang et al, 2021;Turner, Mhieu, & Condron, 2003)…”

Section: Solution 31 P-nmr Analysismentioning

confidence: 99%

Phosphorus mineralization affected by urea in an intensively managed agricultural soil

Jianfeng

Arenberg

Arai

2021

Soil Science Soc of Amer J

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A mineralizable P fractionin soils has not been considered in the current agronomic soil P test. Organic P might be a potential source of bioavailable P under the influence of specific soil conditions such as N input. In this laboratory incubation study, the effects of urea (0.1-0.3 g N kg -1 soil) on P mineralization was investigated in an intensively managed agricultural soil using chemical extractions, phosphatase activity analysis, and solution 31 P nuclear magnetic resonance spectroscopy (NMR). All urea application rates stimulated P release and P mineralization after 5 d, and bioavailable P increased for up to 40 d. The result of NMR analysis and phosphatase activity supported a shift from organic P to orthophosphate. Urea applications generally increased labile P from ∼5 to ∼24 μg g -1 . However, acidity generated from the oxidation of NH 4+ under the highest urea treatment (0.3 g of N kg -1 soil) suppressed P mineralization, indicating the degree of urea application rate is sensitive to P mineralization. The results suggested the use of urea could enhance P bioavailability in P-rich agricultural soils. Tapping into reusable organic P resources in soils might be one of the practical and conservative approaches in the current agriculture.

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High flow event induced the subsurface transport of particulate phosphorus and its speciation in agricultural tile drainage system

Cited by 30 publications

References 88 publications

Quantifying hydrologic pathway and source connectivity dynamics in tile drainage: Implications for phosphorus concentrations

Quantifying hydrologic pathway and source connectivity dynamics in tile drainage: Implications for phosphorus concentrations

Tile Drainage Increases Total Runoff and Phosphorus Export During Wet Years in the Western Lake Erie Basin

Phosphorus mineralization affected by urea in an intensively managed agricultural soil

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