![]() ![]() After 143 hours, the contaminated water was replaced with contaminant free water. ![]() These ditch bed materials were placed in a fluvarium, and contaminated water (13.6 mg/L P and 14.8 mg/L NH4–N) was used to study nutrient adsorption/ transformations by the sediments. Ditch bed materials were collected from a control ditch, a second ditch prior to dredging (Pre-Dredge), and the second ditch after dredging (Post Dredge). Ditch dredging has a direct effect on the nutrient concentrations, which are dissolved in the water column or are adsorbed on the sediment colloids. Sediment buildup reduces the flow rate of ditches and thus field tile lines, it then becomes necessary to dredge drainage ditches occasionally to optimize removal of water from farm fields. Technical Abstract: In the Midwestern United States, drainage ditches are an essential part of our landscape to ensure agriculture productivity. American Society of Agronomy Annual Meeting Abstracts. The Short Term Effects of Ditch Dredging to Nutrient Saturation onto Ditch Bed Materials. Submitted to: ASA-CSSA-SSSA Annual Meeting AbstractsĬitation: Miller, E., Smith, D.R.
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