Nitrogen loading to offsite waters from liquid swine manure application under different drainage and tillage practices

Coelho, B. Ball; Lapen, David R.; Murray, Roger; Topp, Edward; Bruin, A. J.; Khan, B. R.

doi:10.1016/j.agwat.2011.11.014

Cited by 14 publications

(7 citation statements)

References 42 publications

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“…Nitrate load transport via subsurface drainage has been attributed to flow rate[64]. Thus, implementation of practices such as controlled drainage[65] that reduce drainage flow, may diminish nitrate load transport from subsurface drainage.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Contaminant Transport in Agricultural Drainage Water and Urban Stormwater Runoff

et al. 2016

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Transport of nitrogen and phosphorus from agricultural and urban landscapes to surface water bodies can cause adverse environmental impacts. The main objective of this long-term study was to quantify and compare contaminant transport in agricultural drainage water and urban stormwater runoff. We measured flow rate and contaminant concentration in stormwater runoff from Willmar, Minnesota, USA, and in drainage water from subsurface-drained fields with surface inlets, namely, Unfertilized and Fertilized Fields. Commercial fertilizer and turkey litter manure were applied to the Fertilized Field based on agronomic requirements. Results showed that the City Stormwater transported significantly higher loads per unit area of ammonium, total suspended solids (TSS), and total phosphorus (TP) than the Fertilized Field, but nitrate load was significantly lower. Nitrate load transport in drainage water from the Unfertilized Field was 58% of that from the Fertilized Field. Linear regression analysis indicated that a 1% increase in flow depth resulted in a 1.05% increase of TSS load from the City Stormwater, a 1.07% increase in nitrate load from the Fertilized Field, and a 1.11% increase in TP load from the Fertilized Field. This indicates an increase in concentration with a rise in flow depth, revealing that concentration variation was a significant factor influencing the dynamics of load transport. Further regression analysis showed the importance of targeting high flows to reduce contaminant transport. In conclusion, for watersheds similar to this one, management practices should be directed to load reduction of ammonium and TSS from urban areas, and nitrate from cropland while TP should be a target for both.

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Section: Resultsmentioning

confidence: 99%

Comparison of Contaminant Transport in Agricultural Drainage Water and Urban Stormwater Runoff

et al. 2016

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“…Moreover, some comparisons do not compensate for the macro‐ and micronutrients provided with the manure. Second, injection of liquid manures can pose a direct water quality threat; there are several reports of visible contamination of drainage waters immediately following liquid manure injection (Ball Coelho et al, 2007, 2012; Burchell et al, 2005). Lastly, use of organic N sources requires improved management strategies just as inorganic sources do.…”

Section: Resultsmentioning

confidence: 99%

4R Water Quality Impacts: An Assessment and Synthesis of Forty Years of Drainage Nitrogen Losses

Christianson

Harmel

2015

J. Environ. Qual.

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The intersection of agricultural drainage and nutrient mobility in the environment has led to multiscale water quality concerns. This work reviewed and quantitatively analyzed nearly 1,000 site-years of subsurface tile drainage nitrogen (N) load data to develop a more comprehensive understanding of the impacts of 4R practices (application of the right source of nutrients, at the right rate and time, and in the right place) within drained landscapes across North America. Using drainage data newly compiled in the "Measured Annual Nutrient loads from AGricultural Environments" (MANAGE) database, relationships were developed across N application rates for nitrate N drainage loads and corn (Zea mays L.) yields. The lack of significant differences between N application timing or application method was inconsistent with the current emphasis placed on application timing, in particular, as a water quality improvement strategy (p = 0.934 and 0.916, respectively). Broad-scale analyses such as this can help identify major trends for water quality, but accurate implementation of the 4R approach will require site-specific knowledge to balance agronomic and environmental goals.

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“…Ball Coelho et al (2012b) found experimentally that movement through drainage tile comprised only 31, 24, and 16% of the overland + subsurface dissolved reactive P, total P, and sediment loads, respectively. Ball Coelho et al (2012a) indicated that tile drainage is an appropriate mitigation target (BMP) where reduction of NO 3 -N movement to surface waters is an objective, and experimental findings found movement was 2.5-fold less without artificial drainage than with artificial drainage. Hill (1976), Skaggs et al (1994), and Thomas et al (1995) documented that tile drainage can decrease the amount of sediment yields in agricultural drainage (presumably due to reductions in mass losses from surficial or near surface pools).…”

Section: Discussionmentioning

confidence: 99%

Using AnnAGNPS to Predict the Effects of Tile Drainage Control on Nutrient and Sediment Loads for a River Basin

et al. 2015

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Controlled tile drainage (CTD) can reduce pollutant loading. The Annualized Agricultural Nonpoint Source model (AnnAGNPS version 5.2) was used to examine changes in growing season discharge, sediment, nitrogen, and phosphorus loads due to CTD for a ~3900-km 2 agriculturally dominated river basin in Ontario, Canada. Two tile drain depth scenarios were examined in detail to mimic tile drainage control for flat cropland: 600 mm depth (CTD 600 ) and 200 mm (CTD 200 ) depth below surface. Summed for five growing seasons (CTD 600 ), direct runoff, total N, and dissolved N were reduced by 6.6, 3.5, and 13.7%, respectively. However, five seasons of summed total P, dissolved P, and total suspended solid loads increased as a result of CTD 600 by 0.96, 1.6, and 0.23%. The AnnAGNPS results were compared with mass fluxes observed from paired experimental watersheds (250, 470 ha) in the river basin. The "test" experimental watershed was dominated by CTD and the "reference" watershed by free drainage. Notwithstanding environmental/land use differences between the watersheds and basin, comparisons of seasonal observed and predicted discharge reductions were comparable in 100% of respective cases. Nutrient load comparisons were more consistent for dissolved, relative to particulate water quality endpoints. For one season under corn crop production, AnnAGNPS predicted a 55% decrease (CTD 600 ) in dissolved N from the basin. AnnAGNPS v. 5.2 treats P transport from a surface pool perspective, which is appropriate for many systems. However, for assessment of tile drainage management practices for relatively flat tile-dominated systems, AnnAGNPS may benefit from consideration of P and particulate transport in the subsurface.

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Nitrogen loading to offsite waters from liquid swine manure application under different drainage and tillage practices

Cited by 14 publications

References 42 publications

Comparison of Contaminant Transport in Agricultural Drainage Water and Urban Stormwater Runoff

Comparison of Contaminant Transport in Agricultural Drainage Water and Urban Stormwater Runoff

4R Water Quality Impacts: An Assessment and Synthesis of Forty Years of Drainage Nitrogen Losses

Using AnnAGNPS to Predict the Effects of Tile Drainage Control on Nutrient and Sediment Loads for a River Basin

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