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Pedro García-Caparrós, Alfonso Llanderal, Ahmed El-Tarawy, John Majsztrik, and María Teresa Lao

and substrate water-holding properties. This can lead to fertilizer leaching and runoff, and contamination of ground and surface waters from N and phosphorus (P) in runoff water ( Narváez et al., 2011 ). Global concerns about water quality and quantity

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Salvatore S. Mangiafico, Jay Gan, Laosheng Wu, Jianhang Lu, Julie P. Newman, Ben Faber, Donald J. Merhaut, and Richard Evans

Nutrient and pesticide runoff from agricultural production facilities is a concern because it is regarded as a potential nonpoint source pollution of surface waters. Nurseries may be significant sources of these constituents as a result of the

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Rachel Mack, James S. Owen, Alex X. Niemiera, and Joyce Latimer

profitability. Contaminants (such as fertilizers, agrichemicals, and sediment) leaving an operation via runoff water from an agricultural production site are considered nonpoint source pollution and can contribute to the impairment of waterways downstream

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Donald M. Vietor, Ronnie W. Schnell, Tony L. Provin, Richard H. White, and Clyde L. Munster

and sod properties, large, volume-based rates could contribute to nonpoint source losses of dissolved mineral nutrients in runoff during production and after transplanting of sod. Under field conditions, runoff loss of total dissolved P (TDP) from

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Baoxin Chang, Benjamin Wherley, Jacqueline Aitkenhead-Peterson, Nadezda Ojeda, Charles Fontanier, and Philip Dwyer

only reduces water use efficiency but may also increase runoff volumes during rainfall or irrigation events ( Doerr et al., 2003 ; Mitra et al., 2006 ). Water lost as surface runoff has the potential to transport nutrients including nitrogen, potassium

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Kayla R. Sanders and Jeffrey S. Beasley

, conventionally applied WSFs ( Kaminiski et al., 2004 ; Obreza and Sartain, 2010 ) are prone to offsite movement through leaching and surface runoff during intense precipitation or excess irrigation ( Easton and Petrovic, 2004 ; Saha et al., 2007 ). Loss of

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Aaron L. Warsaw, R. Thomas Fernandez, Bert M. Cregg, and Jeffrey A. Andresen

ranging from 8% to 27% have been reported by Warren et al. (1995) . Weatherspoon and Harrell (1980) reported that when overhead irrigation is used, 74% to 87% of applied water falls between containers. Unintercepted water adds to runoff volume and may

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Salvatore S. Mangiafico, Julie Newman, Donald J. Merhaut, Jay Gan, Ben Faber, and Laosheng Wu

( CDFA, 2007 ). Potential water quality concerns from agricultural production include runoff and leaching losses of nutrients, pesticides, and sediment ( Ribaudo and Johansson, 2006 ). Agriculture is considered a leading source of impairment for U

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Shital Poudyal and Bert M. Cregg

, horticultural producers need to find ways to improve irrigation efficiency, including reusing runoff for irrigation. In 2015, irrigation accounted for 37% of total water use in the United States ( Maupin, 2018 ). Horticulture is a major sector of U

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Lauren M. Garcia Chance, Joseph P. Albano, Cindy M. Lee, Staci M. Wolfe, and Sarah A. White

Nursery and greenhouse crop production often results in high concentrations of nutrients within production runoff. Effluent nutrient concentrations can range from 0.1 to 387 mg·L −1 nitrate-nitrogen (NO 3 -N), 0.9 to 47 mg·L −1 ammoniacal