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September 1 - 830 - Chris Hay

  1. Eating the metaphorical elephant: Chris Hay, Iowa Soybean Association Gary Feyereisen, USDA ARS Reid Christianson, University of Illinois Matt Helmers, Iowa State University Meeting nitrogen reduction goals in the Upper Mississippi River Basin Photo: Ray in Manila
  2. Source: USGS
  3. NA NA Source: Nancy N. Rabalais, LUMCON and R. Eugene Turner, LSU
  4. Source: Nancy N. Rabalais, LUMCON and R. Eugene Turner, LSU NA NA
  5. Meeting nutrient reduction goals will be a massive effort Photo: Pete Markham
  6. Source: USGS Iowa 15% Minnesota 6% Illinois 15%
  7. • Recommended in state NRS • Literature • Professional judgement Implementation area
  8. Scenarios High Medium Low Benchmark
  9. Load reduction calculations Individual practices • Relative reductions e.g, • Wetlands with average nitrate-N reduction of 50% (IL, MN) • Treating drainage area that is 8% of row crop acres • Nitrate-N load reduction is 4% Stacked practices
  10. • Economics • Human dimensions • Delivery capacity Challenges/implications Benchmark 45%
  11. Slide courtesy of Gary Feyereisen
  12. Slide courtesy of Gary Feyereisen
  13. Slide courtesy of Gary Feyereisen
  14. • Economics • Human dimensions • Delivery capacity • Risk management • Climate change • Research needs • Revolutionary change Challenges/implications Benchmark 45%
  15. Photo: capt_tain Tom • Meeting nutrient reduction goals will be a massive effort with many challenges • No one practice or group of practices will meet the goals— mix of all practices needed • Understanding the scale of the challenge is a necessary step toward meeting the challenge In summary: Photo: ISA

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  1. EoF CPs – meeting Medium and High levels by 2035, HTF goal target date: A. Completing 1 practice every other day B. Completing 1 practice every day … in each of the 270 counties of the MRB in the 3 states. Nashua; Boone Co.; Greene Co.; Faribault Co.; near Pana, IL; Jaynes – SB in Hamilton, Co.; Polk Co.
  2. EoF CPs – meeting Medium and High levels by 2035, HTF goal target date: A. Completing 1 practice every other day B. Completing 1 practice every day … in each of the 270 counties of the MRB in the 3 states. Nashua; Boone Co.; Greene Co.; Faribault Co.; near Pana, IL; Jaynes – SB in Hamilton, Co.; Polk Co.
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