Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Water Infrastructure WS - Chris Hay

13 views

Published on

North Central Region One Water Action Forum

Published in: Environment
  • Be the first to comment

  • Be the first to like this

Water Infrastructure WS - Chris Hay

  1. 1. Yield Benefits of Drainage Water Recycling in Iowa and Indiana Chris Hay, Iowa Soybean Association Ben Reinhart, Jane Frankenberger, Laura Bowling, Purdue University Matthew Helmers, Iowa State University
  2. 2. Drainage water recycling
  3. 3. Managing Water for Increased Resiliency of Drained Agricultural Landscapes
  4. 4. Feasibility Demand Supply Impact
  5. 5. Supply and demand in Iowa
  6. 6. Soybean NIR (mm)
  7. 7. Corn NIR (mm)
  8. 8. Gilmore City mean drainage depth was 226 mm
  9. 9. Drainage peaks in May and June
  10. 10. CO2 Solar radiation Temperature Genotype Crop canopy Attainable yield with available water supply (rainfall, irrigation) Limit factors: Water Nutrients Weeds Pests Others
  11. 11. Number of years irrigation required (out of 23)
  12. 12. Irrigation depth required
  13. 13. Potential corn yield impact of irrigation ranged from 1.4 to 4.0 Mg/ha
  14. 14. Field data in IN (DPAC) and IA (SERF) (2007-2016, daily) • Drain flow • Water Table • On-site climate DPAC (Saadat, Bowling, Frankenberger), SERF (Helmers) Slide courtesy of Ben Reinhart, Purdue University
  15. 15. Modeling the field and reservoir water balances Slide courtesy of Ben Reinhart, Purdue University
  16. 16. 10% 8% 6% 4% 2% Slide courtesy of Ben Reinhart, Purdue University Average depth of 3.05 m
  17. 17. Mean DPAC yield gap was 3.2 Mg/ha 102 102 102 25 76 76 76 25 0 0
  18. 18. Mean SERF yield gap was 2.7 Mg/ha 0 0 0 0 127 127 152 0 0 25
  19. 19. In summary: • Irrigation requirement in 12 to 20 years out of 23 • Generally adequate drainage water to meet demand • Results suggest potential yield impacts of up to 1.4 to 4.0 Mg/ha • Reservoir area of 4 to 6% could meet irrigation demand Questions?

×