Fate and Transport of Nutrients in an Iowa Agricultural Watershed
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The Iowa State University Integrated Crop Management Conference is Iowa's premier crop production education event. No other program in Iowa brings together the diverse range of topics, slate of expert presenters and results of the latest University research.
The ICM Conference offers workshops focusing on the latest in crop production technology. Experts from Iowa and surrounding states will provide research updates and results in soil fertility, soil and water management, crop production and pest management.
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Abstract
Transport of nitrogen (N) and phosphorus (P) in various forms to water resources can cause water quality concerns relative to drinking water and aquatic life that has to live in those waters receiving agricultural drainage. Of particular concern is the fate of nutrients applied as fertilizer and/or animal manures, and their potential transport with runoff water, eroded soil/sediment, and leaching water. In order to reduce or control nutrient transport/losses, an understanding of the factors that affect losses (chemical, hydrologic, and management) is needed. An ongoing monitoring study of the Upper Maquoketa River in northeast Iowa is providing watershed-scale information on nutrient fate and transport and is the basis for this paper.