Quantifying the Impact of Seasonal and Short‐term Manure Application Decisions on Phosphorus Loss in Surface Runoff

Vadas, Peter; Good, Laura Ward; Jokela, William E.; Karthikeyan, K. G.; Arriaga, Francisco J.; Stock, Melanie

doi:10.2134/jeq2016.06.0220

Cited by 44 publications

(53 citation statements)

References 38 publications

(64 reference statements)

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“…2) under manure treatment were more accurate than those for plots receiving no P fertilization at the same site reported previously (Wang et al, 2018a): DRP losses in surface runoff (<0.4 kg ha −1 ) (NSE of 0.54) and subsurface tile drainage (<0.6 kg ha −1 ) (NSE of 0.58). This is consistent with the finding that a narrow range of DRP loss with relatively low variability would generally result in lower model accuracy (NSE) than those observed for predictions with manure application and a wider range of DRP losses (Vadas et al, 2017). Indeed, manure application increased the range of DRP loss when followed closely by a large rainfall event, thereby typically leading to better accuracy statistics.…”

Section: Resultssupporting

confidence: 89%

Modeling the Impacts of Manure on Phosphorus Loss in Surface Runoff and Subsurface Drainage

et al. 2019

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Simulation of phosphorus (P) transfer from manured agricultural lands to water bodies via surface runoff and subsurface drainage is potentially of great help in evaluating the risks and effects of eutrophication under a range of best management practice scenarios. However, it remains a challenge since few models are capable of providing a reasonably accurate prediction of P losses under manure treatment. The Environmental Policy Integrated Climate (EPIC) model was applied to simulate the impacts on dissolved reactive P (DRP) losses through surface runoff and subsurface drainage from a solid cattle manure–amended corn (Zea mays L.)–soybean [Glycine max (L.) Merr.] rotation on a clay loam soil (Vertisol) located in the Lake Erie region. Simulations of DRP loss in surface runoff and tile drainage were satisfactory; however, EPIC did not consider DRP loss directly from manure, weakening its accuracy in the prediction of DRP loss in surface runoff. Having previously drawn on EPIC‐predicted surface runoff to initiate SurPhos (Surface Phosphorus and Runoff Model) predictions of DRP losses strictly in surface runoff, no comparison had been made of differences in manure application impacts on EPIC‐ or SurPhos‐predicted DRP losses—accordingly, this was assessed. The SurPhos improved the estimation of DRP loss in surface runoff (Nash–Sutcliffe coefficient, 0.53), especially when large rain events occurred immediately after or within 6 wk of manure application. Generally, EPIC can capture the impacts of manure application on DRP loss in surface runoff and subsurface drainage; however, coupling of the EPIC and SurPhos models increased the accuracy of simulation of runoff DRP losses. Core Ideas Simulations of DRP loss in surface runoff and tile drainage using EPIC were satisfactory. Simulations of DRP loss in surface runoff between EPIC and SurPhos were compared. Coupling SurPhos and EPIC improved surface DRP loss prediction with manure addition.

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Section: Resultssupporting

confidence: 89%

Modeling the Impacts of Manure on Phosphorus Loss in Surface Runoff and Subsurface Drainage

et al. 2019

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“…S2a and S2b). Vadas et al (2017) also found that nonwinter manure application to fields with medium or high runoff potential resulted in greater dissolved P loss than winter application to low‐runoff fields. Maximum annual P losses simulated in all scenarios demonstrate the potential for major P loads at any time of the year (Table 3).…”

Section: Resultsmentioning

confidence: 84%

“…Winter manure applications, which experience minimal, if any, nutrient crop uptake, often coincide with active transport pathways created by frozen and water‐saturated soils (Fleming and Fraser, 2000; Srinivasan et al, 2006; Williams et al, 2011; Vadas et al, 2017). Due to the resulting high risks for nutrient loss, many countries constrain or even ban winter manure applications (Webb et al, 2012).…”

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confidence: 99%

Seasonal Manure Application Timing and Storage Effects on Field‐ and Watershed‐Level Phosphorus Losses

et al. 2017

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Timing of manure application to agricultural soils remains a contentious topic in nutrient management planning, particularly with regard to impacts on nutrient loss in runoff and downstream water quality. We evaluated the effects of seasonal manure application and associated manure storage capacity on phosphorus (P) losses at both field and watershed scales over an 11-yr period, using long-term observed data and an upgraded, variable-source water quality model called Topo-SWAT. At the field level, despite variation in location and crop management, manure applications throughout fall and winter increased annual total P losses by 12 to 16% and dissolved P by 19 to 40% as compared with spring. Among all field-level scenarios, total P loss was substantially reduced through better site targeting (by 48-64%), improving winter soil cover (by 25-46%), and reducing manure application rates (by 1-23%). At the watershed level, a scenario simulating 12 mo of manure storage (all watershed manure applied in spring) reduced dissolved P loss by 5% and total P loss by 2% but resulted in greater P concentrations peaks compared with scenarios simulating 6 mo (fall-spring application) or 3 mo storage (four-season application). Watershed-level impacts are complicated by aggregate effects, both spatial and temporal, of manure storage capacity on variables such as manure application rate and timing, and complexities of field and management. This comparison of the consequences of different manure storage capacities demonstrated a tradeoff between reducing annual P loss through a few high-concentration runoff events and increasing the frequency of low peaks but also increasing the annual loss.

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“…During modeling research using Eq. [1] to simulate P loss in runoff from winter‐applied manure, Vadas et al (2017) found that field‐scale runoff data also indicated incomplete interaction of snowmelt water with solid beef manure. Clearly, this possibility of incomplete snowmelt water interaction with solid manure and reduced DRP release deserves further investigation, especially as we could find no literature on this topic.…”

Section: Resultsmentioning

confidence: 99%

Temperature and Manure Placement in a Snowpack Affect Nutrient Release from Dairy Manure during Snowmelt

Vadas

Stock

Feyereisen³

et al. 2018

J of Env Quality

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Agricultural nutrient management is an issue due to N and P losses from fields and water quality degradation. Better information is needed on the risk of nutrient loss in runoff from dairy manure applied in winter. We investigated the effect of temperature on nutrient release from liquid and semisolid manure to water, and of manure quantity and placement within a snowpack on nutrient release to melting snow. Temperature did not affect manure P and NH-N release during water extraction. Manure P release, but not NH-N release, was significantly influenced by the water/manure solids extraction ratio. During snowmelt, manure P release was not significantly affected by manure placement in the snowpack, and the rate of P release decreased as application rate increased. Water extraction data can reliably estimate P release from manure during snowmelt; however, snowmelt water interaction with manure of greater solids content and subsequent P release appears incomplete compared with liquid manures. Manure NH-N released during snowmelt was statistically the same regardless of application rate. For the semisolid manure, NH-N released during snowmelt increased with the depth of snow covering it, most likely due to reduced NH volatilization. For the liquid manure, there was no effect of manure placement within the snowpack on NH-N released during snowmelt. Water extraction data can also reliably estimate manure NH-N release during snowmelt as long as NH volatilization is accounted for with liquid manures for all placements in a snowpack and semisolid manures applied on top of snow.

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Quantifying the Impact of Seasonal and Short‐term Manure Application Decisions on Phosphorus Loss in Surface Runoff

Cited by 44 publications

References 38 publications

Modeling the Impacts of Manure on Phosphorus Loss in Surface Runoff and Subsurface Drainage

Modeling the Impacts of Manure on Phosphorus Loss in Surface Runoff and Subsurface Drainage

Seasonal Manure Application Timing and Storage Effects on Field‐ and Watershed‐Level Phosphorus Losses

Temperature and Manure Placement in a Snowpack Affect Nutrient Release from Dairy Manure during Snowmelt

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