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Sediment and Nutrient Reduction in Irrigation Return Flows by Vegetated Filter Strips on Surface Irrigated Fields

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2012 Dallas, Texas, July 29 - August 1, 2012  121336855.(doi:10.13031/2013.42103)
Authors:   Brian William Bodah, Jeffrey L Ullman, Rafael Muñoz-Carpena, Gregory A Kiker, Oscar Perez-Ovilla, William L Pan, R Troy Peters, Mark Stannard
Keywords:   Vegetative filter strips, suspended sediment, soluble nutrients, infiltration, reduction

Nonpoint sources account for nearly two-thirds of nutrient loading to the nation's surface waters (Beutel et al., 2009; Sharpley et al., 2001). Vegetated filter strips can mitigate the effects of agricultural activities by presenting a physical barrier to sediment, nutrients, and pesticides being carried into streams (Munoz-Carpena and Parsons, 2004; Krutz et al., 2005). Filter strips may also reduce the flux of soluble nutrients through plant uptake or by supporting environmental conditions that favor chemical transformations such as denitrification (Haycock and Pinay, 1993; Cooper and Gilliam, 1987; Hickey and Doran, 2004).

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