Effectiveness of Vegetative Filter Strips in Reducing Pesticide Loading: Quantifying Pesticide Trapping Efficiency

Sabbagh, George J.; Fox, Garey A.; Kamanzi, A.; Roepke, B.; Tang, Jiaxi

doi:10.2134/jeq2008.0266

Cited by 84 publications

(110 citation statements)

References 30 publications

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“…It should be noted that nutrient and pesticide processes are excluded from the original version of VFSMOD. However, Kuo and Muñoz-Carpena [69] and Sabbagh et al [70] coupled VFSMOD to empirical trapping efficiency equations for phosphorus and pesticides, respectively. The enhanced model was also combined with a graphical user interface and other tools to develop a vegetative filter strip modelling system (VFSMOD-W) [71].…”

Section: Specific Modelsmentioning

confidence: 99%

Assessment of Agricultural Best Management Practices Using Models: Current Issues and Future Perspectives

Xie

Chen

Shen

2015

Water

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Best management practices (BMPs) are the most effective and practicable means to control nonpoint source (NPS) pollution at desired levels. Models are valuable tools to assess their effectiveness. Watershed managers need to choose appropriate and effective modelling methods for a given set of conditions. This paper considered state-of-the-art modelling strategies for the assessment of agricultural BMPs. Typical watershed models and specific models were analyzed in detail. Further improvements, including simplified tools, model integration, and incorporation of climate change and uncertainty analysis were also explored. This paper indicated that modelling methods are strictly scale dependent, both spatially and temporally. Despite current achievements, there is still room for future research, such as broadening the range of the pollutants considered, introducing more local BMPs, improving the representation of the functionality of BMPs, and gathering monitoring date for validation of modelled results. There is also a trend towards agricultural decision support systems (DSSs) for assessing agricultural BMPs, in which models of different scales are seamlessly integrated to bridge the scale and data gaps. This review will assist readers in model selection and development, especially those readers concerned about NPS pollution and water quality control.

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Section: Specific Modelsmentioning

confidence: 99%

Assessment of Agricultural Best Management Practices Using Models: Current Issues and Future Perspectives

Xie

Chen

Shen

2015

Water

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“…As in the 1970s and 1980s when the focus was on the easily measurable and reducible point (c) Electrical resistivity profile through the groundwater transect for which P transport rates were calculated. Electrical resistivity at this field site has been positively correlated to saturated hydraulic conductivity sources, implementation of riparian buffer zones and other conservation practices currently focus on the more easily understood and observed surface runoff mechanism (Lacas et al, 2005;Popov et al, 2005;Reichenberger et al, 2007;Poletika et al, 2009;Sabbagh et al, 2009). Although conservation practices can reduce P loss in surface runoff, the movement of subsurface P and its contribution to the receiving stream system may also need to be considered.…”

Section: Introductionmentioning

confidence: 98%

Comparison of subsurface and surface runoff phosphorus transport rates in alluvial floodplains

Mittelstet

Heeren

Fox

et al. 2011

Agriculture, Ecosystems & Environment

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Mittelstet, Aaron R.; Heeren, Derek M.; Fox, Garey A.; Storm, Daniel E.; White, Michael J.; and Miller, Ronald B., "Comparison of subsurface and surface runoff phosphorus transport rates in alluvial floodplains" (2011 a b s t r a c t Phosphorus (P) loading to streams can occur by both surface runoff and subsurface transport, with subsurface P transport often assumed negligible. Groundwater P concentrations in alluvial aquifers can be significant, especially in preferential flow paths (PFPs). The objectives of this research were to quantify subsurface P transport rates at two sites in northeastern Oklahoma and to compare them with surface runoff P transport rates derived from a hydrologic model, the Pasture Phosphorus Management Calculator (PPM Plus). Ozark ecoregion study sites were adjacent to the Barren Fork Creek and Honey Creek in northeastern OK, USA. Each site, instrumented with 24 observation wells, was monitored for several months for both groundwater levels and P concentrations. Using the flow and P concentration data, Monte Carlo simulations with Darcy's Law and a P transport rate equation were used to calculate the distributions of subsurface P transport rates across a transect within the well field containing a single identified PFP. Total subsurface P transport rates, through both the non-PFP flow domain and a single PFP, were estimated to be 0.04 kg year −1 and 0.03 kg year −1 for the Barren Fork Creek and Honey Creek field sites, respectively. Monte Carlo simulations for surface runoff P transport rates with PPM Plus resulted in average total P surface runoff transport rates of 0.07 kg year −1 for the Barren Fork Creek site and 0.08 kg year −1 for the Honey Creek site. For the groundwater at these floodplains, the P source was P-laden stream water flowing into the alluvial aquifer and a minimal quantity of P leaching from the surface. Results indicated that the subsurface P transport rates for small (3 ha) alluvial floodplain sites in the Ozark ecoregion were at least 0.03-0.04 kg year −1 , although subsurface P transport rates may be higher in cases with greater numbers of PFPs and where the subsurface is connected to a larger P source.

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“…These pathogens also infiltrate into soil matrix through overland flows. Infiltration of pathogens from overland flows into soil matrix has hardly been managed by VFSMOD_W model unlike pesticides and nutrients (Poletika et al 2009;Sabbagh et al 2009;Fox et al 2010;Muñoz-Carpena and Parsons 2011). Microbe infiltration might be governed by soil physical properties; vegetated cover; antecedent moisture content; rainfall intensity and inflow, and slope, while hydraulic resistance is a function of vegetation type and inflow volume (Munoz-Carpena and Parsons 1999;Soupir et al 2010;Trowsdale and Simcock 2011;Davis et al 2012;Martinez et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of vegetated filter strips on infiltration and survival rates of Escherichia coli in soil matrix at Mau, Njoro River Watershed, Kenya

Olilo

Muia

Onyando

et al. 2016

Energ. Ecol. Environ.

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Overland flows contaminated with manure borne pathogens pose risks to public health, because fecal pathogens may infiltrate into soil matrix from overland flows and contaminate soil water aquifers. The objective of this study was to evaluate the effect of vegetative filter strip (VFS) on infiltration rates (CFU 100 ml -1 h -1 ) of Escherichia coli (E. coli) in overland flow and their survival rates in soil matrix. Thirty samples of the specimen were collected from VFSs each sampling time. The samples were each filtered, followed by a series of ten dilutions; then analyses for E. coli using membrane filtration technique. Wet oxidation method and potassium persulfate technique were used to analyze particulate organic carbon (POC) and dissolved organic carbon (DOC) at (p \ 0.05) level of significance, respectively. A strong relationship was obtained between E. coli, POC and DOC in the overland flows (R 2 = 0.89, p B 0.05; df = 29). This study confirms the hypothesis that DOC released from Napier grass and Kikuyu grass exudates supported the initial survival, subsequent growth and adaptation of E. coli in its new secondary habitat outside its primary host. Thus, in the soil habitat, DOC and POC provided the initial energy for microbial cell multiplication from the VFS grasses. VFS influenced partitioning, infiltration and survival of E. coli in the overland flow into soil matrix. Thus, root zone retention data and information on E. coli in VFS systems are significant and could be used for scientific and management of soil erosion and the control of fecal pathogens entering surface water ecosystems both locally in Mau Ranges, Njoro River Watershed and internationally in other areas with similar environmental problems. VFS could be utilized under various designs of VFSs with different plants that have different setup of plants' root zone cover and penetrations systems that could help in infiltrating overland flow manure borne pathogens, a process that could be useful in the management of these pathogens in agro-pastoral systems locally and internationally.

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Effectiveness of Vegetative Filter Strips in Reducing Pesticide Loading: Quantifying Pesticide Trapping Efficiency

Cited by 84 publications

References 30 publications

Assessment of Agricultural Best Management Practices Using Models: Current Issues and Future Perspectives

Assessment of Agricultural Best Management Practices Using Models: Current Issues and Future Perspectives

Comparison of subsurface and surface runoff phosphorus transport rates in alluvial floodplains

Effect of vegetated filter strips on infiltration and survival rates of Escherichia coli in soil matrix at Mau, Njoro River Watershed, Kenya

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