Start Date

4-12-2013 12:00 AM

Description

With the release of the Iowa Nutrient Reduction Strategy (2013) in early 2013 there has been increased interest in what practices can be utilized by farmers to reduce nutrient export to downstream water bodies. As highlighted by the ISU Extension and Outreach Special Publication 235 (2013) there are many in-field, land use, and edge-of-field practices that have potential to reduce nutrient export. However, to reach the nutrient load reduction goals of 45% on both nitrate-N and phosphorus will require a combination of practices. As a result, there is a need to examine individual fields or small watersheds considering the range of practices to assess how the practices can be combined to reach the desired outcomes. In this paper, we consider a case study watershed of about 1200 acres and examine individual and combinations of practices to reduce nitrate-N export from this area.

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Dec 4th, 12:00 AM

Nutrient reduction strategy: One farm, many practices

With the release of the Iowa Nutrient Reduction Strategy (2013) in early 2013 there has been increased interest in what practices can be utilized by farmers to reduce nutrient export to downstream water bodies. As highlighted by the ISU Extension and Outreach Special Publication 235 (2013) there are many in-field, land use, and edge-of-field practices that have potential to reduce nutrient export. However, to reach the nutrient load reduction goals of 45% on both nitrate-N and phosphorus will require a combination of practices. As a result, there is a need to examine individual fields or small watersheds considering the range of practices to assess how the practices can be combined to reach the desired outcomes. In this paper, we consider a case study watershed of about 1200 acres and examine individual and combinations of practices to reduce nitrate-N export from this area.