EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
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5/23/2019 | 12:15 PM - 12:30 PM | CONSERVATION PRACTICE EFFECTIVENESS AND APPLICATION FOR WATER QUALITY IMPROVEMENTS IN AGRICULTURAL SUBWATERSHEDS OF THE MACKINAW RIVER, ILLINOIS, USA | 151 DEF
CONSERVATION PRACTICE EFFECTIVENESS AND APPLICATION FOR WATER QUALITY IMPROVEMENTS IN AGRICULTURAL SUBWATERSHEDS OF THE MACKINAW RIVER, ILLINOIS, USA
The Mackinaw River is a major tributary of the Illinois River that drains into the Mississippi River. This 3,000 km2 watershed contains some of the most productive agricultural land in the nation and plays a key role in the livelihood of farmers and Illinois economy. Urban development and tile-drained row crop agriculture have stressed freshwater resources, leading to habitat loss and reduced water quality. Long term research in the watershed to evaluate and mitigate agricultural impacts on hydrology, biodiversity and water quality includes (1) field and watershed-scale monitoring of wetland effectiveness, (2) bundling infield and edge of field practices, and (3) transitioning farmers from fall to spring nitrogen application for corn production. Results are promising, showing up to 50% reduction of nitrate-N by wetlands, some water quality improvements from winter cover crops, and 22% reduction in nitrogen application on acres enrolled in 2-year pilot study with an estimated reduction of 4,065 kg nitrate to adjacent surface waters. Continued incorporation of science into collaborative outreach and implementation efforts is necessary to develop and apply sustainable conservation-based solutions at scale to address water quality goals and sustain diversity in this agricultural watershed.
- Non-point Source
- Nutrients
- Hydrology
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Presenters/Authors
Maria Lemke
(), The Nature Conservancy, mlemke@tnc.org;
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Krista Kirkham
(), The Nature Conservancy, kkirkham@tnc.org;
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David Kovacic
(), University of Illinois, dkovacic@illinois.edu;
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Michael Wallace
(), University of Illinois, mwallace@illinois.edu;
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William Perry
(), Illinois State University, wlperry@ilstu.edu;
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Jackie Kraft
(), McLean County Soil and Water District, jacqueline.kraft@il.nacdnet.net;
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Terry Noto
(), Conservation Strategies Consulting, tnoto@rochester.rr.com;
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Ashley Maybanks
(), The Nature Conservancy, amaybanks@tnc.org;
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Adrienne Marino
(), The Nature Conservancy, adrienne.marino@tnc.org;
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