Strengthening Agriculture’s
Commitment to Water Quality:
Iowa Nutrient Reduction Strategy
Prepared by:
John Lawrence, Iowa...
Progress report
•
•
•
•

Iowa Nutrient Research Center
Ongoing research
Measures of success
What’s next
Iowa Nutrient Research Center
•
•
•
•

Established by 2013 Legislature
Funded at $1.5 million for 2013-2014
Regents Center...
10 Projects year 1: $1,425,770
• Iowa Institute of Hydraulic Research ‐ Hydroscience and
Engineering Work Plan

• Distribu...
10 Projects year 1: $1,425,770
• Establishment and monitoring of saturated buffers within
priority watersheds
• Investigat...
Manure Research
• Evaluating Instinct with fall applied liquid swine
manure. Finish likely this summer

Northeast Iowa Res...
Manure Research
Northwest Iowa Research Farm
• Effects of Tillage and Phosphorus Source on Long-term
Phosphorus Runoff Los...
Measures of success
committee
• WRCC committee on how to measure if
we are making progress toward the goal
• Met 3 times: ...
Measures of success
committee
Measurable indicators of desirable change
Specific indicators in attached text

Inputs

Huma...
Example Combination Scenarios that
Achieve N and P Goal From NPS
Total EAC* Statewide
Initial
Cost
Average
% Reduction Inv...
Example Combination Scenarios that
Achieve N and P Goal From NPS
N

Name Combined Scenario
MRTN Rate, Inhibitor with all F...
Next Steps
•
•
•
•
•
•

Successful management of cover crops
Launch priority watershed projects
Continued education and de...
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Dr. John Lawrence - Strengthening Agriculture's Commitment to Water Quality: The Iowa Nutrient Reduction Strategy

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Strengthening Agriculture's Commitment to Water Quality: The Iowa Nutrient Reduction Strategy - Dr. John Lawrence, from the 2014 Iowa Pork Congress, January 22-23, Des Moines, IA, USA.

More presentations at http://www.swinecast.com/2014-iowa-pork-congress

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  • Examples for illustration only, not for recommendation. It shows that to achieve the 41% N and 29% P targets for nonpoint source, it will require a high adoption rate of several practices.Remember that Equal Annualized Costs (EAC) includes the annualized initial investment, so you cannot add initial investment and EAC.
  • Examples for illustration only, not for recommendation. It shows that to achieve the 41% N and 29% P targets for nonpoint source, it will require a high adoption rate of several practices.Remember that Equal Annualized Costs (EAC) includes the annualized initial investment, so you cannot add initial investment and EAC.The low EAC for this example is due to no P application on soils that have high or very high soil test phosphorous. That savings helps pay the costs of the other practices in this statewide example. The farmer then makes a large initial investment, may not have high STP and thus will not get the P cost savings.If high STP is due to manure application, the livestock farmer may have higher cost to move manure to additional fields.
  • Dr. John Lawrence - Strengthening Agriculture's Commitment to Water Quality: The Iowa Nutrient Reduction Strategy

    1. 1. Strengthening Agriculture’s Commitment to Water Quality: Iowa Nutrient Reduction Strategy Prepared by: John Lawrence, Iowa State University jdlaw@iastate.edu
    2. 2. Progress report • • • • Iowa Nutrient Research Center Ongoing research Measures of success What’s next
    3. 3. Iowa Nutrient Research Center • • • • Established by 2013 Legislature Funded at $1.5 million for 2013-2014 Regents Center administered by CALS Dean The purpose of the center shall be to pursue a science based approach to nutrient management research… • http://www.nutrientstrategy.iastate.edu/
    4. 4. 10 Projects year 1: $1,425,770 • Iowa Institute of Hydraulic Research ‐ Hydroscience and Engineering Work Plan • Distribution, transport, and biogeochemical transformations of agriculturally derived nitrogen and phosphorus in Cedar River • Establishing pragmatically dynamic program for extending water quality BMP financial information: Farmer tools for Iowa Nutrient Reduction Strategy • Social-economic research work plan • Phosphorus transport in Iowa streams: Importance of stream bed and bank erosion
    5. 5. 10 Projects year 1: $1,425,770 • Establishment and monitoring of saturated buffers within priority watersheds • Investigating causes of corn yield decreases following cereal rye winter cover crop • Impacts of cover crops on phosphorus and nitrogen loss with surface runoff • Nonpoint source nitrogen and phosphorous loads at implementation scale: Direct agricultural nutrient loads to surface waters in relation to land use and mgt. • Bioreactor Research & Assessment of Woodchip Tile Denitrification Bioreactors: Optimal Design/ Performance and Experimental Bioreactor Installation and Study
    6. 6. Manure Research • Evaluating Instinct with fall applied liquid swine manure. Finish likely this summer Northeast Iowa Research Farm, • Impact of Liquid Swine Manure Application and Cover Crops on Ground Water Quality – http://www.ag.iastate.edu/farms/11reports/Northeast/I mpactManure.pdf • Fertilizer and Swine Manure Management Systems Impacts on phosphorus in Soil and Subsurface Tile Drainage – http://www.ag.iastate.edu/farms/11reports/Northeast/F ertilizerSwine.pdf • Drainage Water Quality Impacts of Current and Future Agricultural Management Practices
    7. 7. Manure Research Northwest Iowa Research Farm • Effects of Tillage and Phosphorus Source on Long-term Phosphorus Runoff Loss and Crop Yield – http://www.ag.iastate.edu/farms/2012%20Farm%20Rep orts/Northwest/EffectsTillage.pdf 1. Corn-soybean rotation managed with chisel/disk tillage and fertilizer P. 2. Corn-soybean rotation managed with no-tillage and fertilizer P. 3. Corn-soybean managed with chisel/disk tillage and P-based liquid swine manure. 4. Corn-soybean managed with no-tillage and P-based manure. 5. Continuous corn managed with chisel/disk tillage, N-based manure, and baled stover.
    8. 8. Measures of success committee • WRCC committee on how to measure if we are making progress toward the goal • Met 3 times: Sep, Nov, Jan • Report to WRCC on January 22
    9. 9. Measures of success committee Measurable indicators of desirable change Specific indicators in attached text Inputs Human People Partner Organizations Funding Partner Agribusinesses Agency resources Farmer knowledge and attitude Private sector resources Point source communities and management knowledge and attitude Land Water Land use changes Calculated load reduction Net acres cover crops Net acres perennials Etc. Practice adoption Measured loads in priority watersheds Acres of practice X Acres of practice Y Etc. Point source implementation Feasibility studies Permit applications Construction Measured loads at existing monitoring stations Organized watersheds reported load changes
    10. 10. Example Combination Scenarios that Achieve N and P Goal From NPS Total EAC* Statewide Initial Cost Average % Reduction Investment (million EAC Costs from baseline (million $) $/year) ($/acre) N P MRTN Rate, 60% Acreage with Cover Crop, NCS1 27% of ag land treated with wetland and 60% of drained land has bioreactor 42 30 3,218 756 36 MRTN Rate, 95% of acreage in all MLRAs with Cover Crops, 34% of ag land in MLRA 103 and NCS3 104 treated with wetland, and 5% land retirement in all MLRAs 42 50 1,222 1,214 58 Name Combined Scenario
    11. 11. Example Combination Scenarios that Achieve N and P Goal From NPS N Name Combined Scenario MRTN Rate, Inhibitor with all Fall Commercial N, Sidedress All Spring N, 70% of all tile drained acres treated with bioreactor, 70% of all applicable land has controlled drainage, 31.5% of ag land treated with a wetland, and 70% of all agricultural streams NCS8 have a buffer) - Phosphorus reduction practices (phosphorus rate reduction on all ag land, Convert 90% of Conventional Tillage CS & CC acres to Conservation Till and Convert 10% of Non-No-till CS & CC ground to No-Till P Total EAC* Statewide Initial Cost Average % Reduction Investment (million EAC Costs from baseline (million $) $/year) ($/acre) 42 29 4,041 77 4
    12. 12. Next Steps • • • • • • Successful management of cover crops Launch priority watershed projects Continued education and demonstration Establish measurements and baseline Make changes, show progress Innovate and implement new methods

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