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Gulf Hypoxia and Local Water Quality Concerns Workshop Gulf Hypoxia and Local Water Quality Concerns Workshop A workshop assessing tools to reduce agricultural nutrient losses to water resources in the Corn Belt 5PPER -ISSISSIPPI 2IVER 3UB BASIN (YPOXIA .UTRIENT #OMMITTEE September 26 – 28, 2005 Iowa State University Ames, Iowa Gulf Hypoxia and Local Water Quality Concerns Workshop September 26 – 28, 2005 Iowa State Univeristy Ames, Iowa Table of Contents Workshop program and agenda .........................................................................................................6 Scheman Building room diagram ......................................................................................................9 Map and directions to Reiman Gardens (Monday evening reception) ...............................................10 Session 1 Understanding Nutrient Fate and Transport, Including the Importance of Hydrology in Determining Losses, and Potential Implications on Management Systems to Reduce Those Losses James L. Baker, Iowa State University; Mark B. David, University of Illinois; Dean W.Lemke, Iowa Department of Agriculture and Land Stewardship ..............................11 Session 2 Drainage Water Management: A Practice for Reducing Nitrate Loads From Subsurface Drainage Systems Richard A. Cooke, Associate Professor, Department of Agricultural and Biological Engineering, University of Illinois at Urbana Champaign; Gary R. Sands, Associate Professor, Department of Biosystems and Agricultural Engineering, University of Minnesota; Larry C. Brown, Professor, Department of Food, Agricultural and Biological Engineering, The Ohio State University .....................................................................27 Session 3 Potential of Wetlands to Reduce Agricultural Nutrient Export to Water Resources in the Corn Belt William G. Crumpton, Iowa State University, Ames, IA ................................................ 35 Session 4 Buffers and Vegetative Filter Strips Matthew J. Helmers, Assistant Professor Department of Agricultural and Biosystems Engineering, Iowa State University; Thomas Isenhart, Associate Professor Department of Natural Resource Ecology and Management, Iowa State University; Jeffrey Strock, Associate Professor Department of Soil, Water, and Climate and Southwest Research and Outreach Center, University of Minnesota, St. Paul ....................................................... 45 Session 5 Nitrogen Rates John E. Sawyer, Associate Professor and Soil Fertility Extension Specialist, Department of Agronomy, Iowa State University; Gyles W. Randall, Soil Scientist and Professor, Southern Research and Outreach Center, University of Minnesota ................................................ 59 — Gulf Hypoxia and Local Water Quality Concerns Gulf Hypoxia and Local Water Quality Concerns — 5 Session 6 Nitrogen Application Timing, Forms and Additives Gyles Randall, Soil Scientist and Professor, Southern Research and Outreach Center, University of Minnesota; John Sawyer, Associate Professor and Soil Fertility Extension Specialist, Dept. of Agronomy, Iowa State University ...................................................73 Session 7 Agronomic and Environmental Implication of Phosphorus Management Practices Antonio P. Mallarino, Department of Agronomy, Iowa State University, Ames; Larry G. Bundy, Department of Soil Science, University of Wisconsin-Madison ........................... 85 Session 8 Using Manure as a Fertilizer for Crop Production John A. Lory and Ray Massey, Associate Professors of Extension, University of Missouri; Brad Joern, Professor, Purdue University ...................................................................105 Session 9 Effects of Erosion Control Practices on Nutrients Losses George F. Czapar, University of Illinois; John M. Laflen, Iowa State University; Gregory F. McIsaac, University of Illinois; Dennis P. McKenna, Illinois Department of Agriculture 115 Session 10 Potential and Limitations of Cover Crops, Living Mulches and Perennials to Reduce Nutrient Losses to Water Sources from Agricultural Fields T.C. Kaspar, Plant Physiologist, USDA-ARS, National Soil Tilth Laboratory; E.J. Kladivko, Professor of Soil Physics, Agronomy Dept., Purdue University; J.W. Singer, Research Agronomist, USDA-ARS, National Soil Tilth Laboratory ........................... 125 Session 11 Sustaining Soil Resources While Managing Nutrients Dan B. Jaynes, National Soil Tilth Laboratory, Ames, IA; Douglas L. Karlen, National Soil Tilth Laboratory, Ames, IA ..............................................................................141 Session 12 Field-Scale Tools for Reducing Nutrient Losses to Water Resources Larry G. Bundy, Department of Soil Science, University of Wisconsin-Madison; Antonio P. Mallarino, Department of Agronomy, Iowa State University, Ames ......................... 151 Session 13 Watershed-Scale Tools Pete Nowak, Professor and Chair, Gaylord Nelson Institute for Environmental Studies, University of Wisconsin-Madison; John Norman, Professor, Department of Soil Science, University of Wisconsin-Madison; Dave Mulla, Professor and W.E. Larson Chair for Soil & Water Resources, Department of Soil, Water and Climate, University of Minnesota 163 Session 14 Evaluating the effectiveness of agricultural management practices at reducing nutrient losses to surface waters D. J. Mulla and A. S. Birr, Univ. Minnesota, St. Paul, Minnesota; N. Kitchen, USDA- ARS, Columbia, Missouri; M. David, University of Illinois, Urbana, Illinois. ........... 171 Session 15 Where do we go from here? Dean W. Lemke, Iowa Department of Agriculture and Land Stewardship; Dennis P. McKenna, Illinois Department of Agriculture ..........................................................195 6 — Gulf Hypoxia and Local Water Quality Concerns Workshop Program Monday, September 26 11:00 am Registration desk opens 12:00 pm Opening luncheon - Room 167-179, Scheman Building Remarks by Secretary of Agriculture Patty Judge, Iowa Department of Agriculture and Land Stewardship, and Wendy Wintersteen, Interim Dean, College of Agriculture, Iowa State University. Afternoon sessions – Benton Auditorium Moderator: Rick Cruse, Iowa State University 1:00 Session 1 – Understanding Nutrient Fate and Transport, Including the Importance of Hydrology in Determining Losses, and Potential Implications on Management Systems to Reduce Those Losses Authors: James Baker, Iowa State University; Mark David, University of Illinois; Dean Lemke, Iowa Department of Agriculture and Land Stewardship Panelists: Gyles Randall, University of Minnesota and Dan Jaynes, USDA National Soil Tilth Laboratory 2:00 Session 2 – Drainage Water Management: A Practice for Reducing Nitrate Loads From Subsurface Drainage Systems Authors: Richard Cooke, University of Illinois; Larry Brown, Ohio State University; Gary Sands, University of Minnesota Panelists: Norman Fausey, USDA Agricultural Research Service and Don Pitts, Illinois Natural Resources Conservation Service 3:00 Break 3:30 Session 3 – Potential of Wetlands to Reduce Agricultural Nutrient Export to Water Resources in the Corn Belt Author: William Crumpton, Iowa State University Panelists: David Kovacic, University of Illinois; Don Hey, The Wetlands Initiative; Mary Skopec, Iowa Geological Survey Bureau; Gary Sands, University of Minnesota 4:30 Session 4 – Buffer and vegetative filter strips Authors: Matt Helmers, Iowa State University; Jeff Strock, University of Minnesota; Tom Isenhart, Iowa State University Panelist: Mike Dosskey, USDA National Agroforestry Center and Seth Dabney, USDA Agricultural Research Service 5:30 Workshop adjourns 6:00 Dinner and reception at Iowa State University Reiman Gardens A brochure describing the Gardens is included in the cover pocket of this notebook. A map showing the location of the Gardens is on page 10 of this notebook. Gulf Hypoxia and Local Water Quality Concerns — Tuesday, September 27 Morning sessions – Benton Auditorium Moderator: Dennis Keeney, Iowa State University 7:30 am Morning refreshments 8:00 Session 5 – Nitrogen rates (combined with Session 6) Session 6 – Nitrogen Application Timing, Forms and Additives Authors: John Sawyer, Iowa State University and Gyles Randall, University of Minnesota Panelists: Robert Hoeft, University of Illinois; Peter Scharf, University of Missouri; Alfred Blackmer, Iowa State University; Sylvie Brouder, Purdue University; Eileen Kladivko, Purdue University; Larry Bundy, University of Wisconsin; James Baker, Iowa State University 9:45 Break 10:00 Session 7 – Agronomic and Environmental Implication of Phosphorus Management Practices Authors: Antonio Mallarino, Iowa State University and Larry Bundy, University of Wisconsin Panelists: Brad Joern, Purdue University; Robert Hoeft, University of Illinois; Peter Scharf, University of Missouri 11:00 Session 8 – Using Manure as a Fertilizer for Crop Production Authors: John Lory, University of Missouri; Brad Joern, Purdue University; Ray Massey, University of Missouri Panelists: Carrie Laboski, University of Wisconsin; Stewart Melvin, Curry-Wille & Associates. 12:00 pm Lunch - Room 167-179, Scheman Building Remarks by Diane Regas, Director of Office of Wetlands, Oceans and Watersheds, U.S. Environmental Protection Agency Afternoon sessions – Benton Auditorium Moderator: Tom Hunt, University of Wisconsin 1:00 Session 9 – Effects of Erosion Control Practices on Nutrients Losses Authors: George Czapar, University of Illinois; Greg McIsaac, University of Illinois; Dennis McKenna, Illinois Department of Agriculture; John Laflen, Iowa State University
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