Drainage Water Quality Impacts of Various In-field Nutrient Management Practices: Northeast Research and Demonstration Farm
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The Northeast Research and Demonstration Farm (NERF) has 36 1-acre research plots equipped with a drainage water monitoring system installed in 1988 (Figure 1). Plots have 1-4 percent slope with Kenyon, Floyd, and Readlyn soils. Tile lines are installed at a depth of four feet spaced 95 feet apart (Figure 2). Management practices are evaluated for their impact on nitrate-N and dissolved phosphorus (P) loss and crop yield. To quantify the impact of these practices, researchers are monitoring subsurface drainage volume and collecting flow-proportional water samples for nitrate-N and dissolved P analysis (Figure 3). The 30-year average annual rainfall for NERF is 29.7 inches. The average tile drainage flow from 2001-2015 is 4.5 inches.
Helmers, Matt, "Drainage Water Quality Impacts of Various In-field Nutrient Management Practices: Northeast Research and Demonstration Farm" (2017). Extension and Outreach Publications. 571.
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