Matthew J. Helmers

发表

Impact of Liquid Swine Manure Application and Cover Crops on Ground Water Quality

Antonio P. Mallarino, Carl H. Pederson, Rameshwar S. Kanwar, 2009 .

Wetland Demonstration Project

Matthew J. Helmers, L. Gregory Brenneman, 2011 .

ISU Extension Offers Ag Drainage School

Matthew J. Helmers, Kapil Arora, Brent A. Pringnitz, 2011 .

Modeling and Calibration of Drainage Denitrification Bioreactor Design Criteria

Alok Bhandari, Carl H. Pederson, Matthew J. Helmers, 2013 .

Integrated Drainage-Wetland Systems for Reducing Nitrate Loads from Tile Drained Landscapes

Matthew J. Helmers, William G. Crumpton, 2004 .

Nation’s Premier Site for Water Quality Drives Progress

Matthew J. Helmers, 2016 .

Comparison of Liquid Swine Manure and Aqua-Ammonia Nitrogen Application Timing on Subsurface Drainage Water Quality in Iowa

Matthew J. Helmers, James L. Baker, Stewart W. Melvin, 2011 .

Potential Impact of Climate Change on Subsurface Drainage in Iowa’s Subsurface Drained Landscapes

Matthew J. Helmers, Ranvir Singh, Eugene S. Takle, 2009 .

Comparison of Construction Costs for Vegetative Treatment Systems in the Midwestern United States

Robert T. Burns, Lara B. Moody, Matthew J. Helmers, 2011 .

Comparison of the Soil-Plant-Air-Water Model and the Iowa State University-Effluent Limitation Guidelines Model to Replicate Holding Basin Performance

Robert T. Burns, Lara B. Moody, Matthew J. Helmers, 2008 .

Theme Overview: Agriculture and Water Quality in the Cornbelt: Overview of Issues and Approaches

Matthew J. Helmers, Thomas M. Isenhart, Mark D. Tomer, 2007 .

SIMULATING LONG-TERM IMPACTS OF WINTER RYE COVER CROP ON HYDROLOGIC CYCLING AND NITROGEN DYNAMICS FOR A CORN-SOYBEAN CROP SYSTEM

Matthew J. Helmers, Robert W. Malone, Kelly R. Thorp, 2011 .

Effects of Subsurface Drainage Systems on Water and Nitrogen Footprints Simulated with RZWQM2

Carl H. Pederson, Matthew J. Helmers, Robert W. Malone, 2018 .

Reliability of RZWQM model predictions: Model calibration for performance and robustness.

Lei Gu, Matthew J. Helmers, Robert P. Anex, 2018 .

Comparison of Timing and Volume of Subsurface Drainage under Perennial Forage and Row Crops in a Tile-Drained Field in Iowa

Matthew J. Helmers, Xiaobo Zhou, Ryan J. Goeken, 2015 .

Modeling sediment trapping in a vegetative filter accounting for converging overland flow

Matthew J. Helmers, Dean E. Eisenhauer, Thomas G. Franti, 2005 .

Water Balance Investigation of Drainage Water Management in Non-Weighing Lysimeters

Matthew J. Helmers, Peter A. Lawlor, Kyle D. Riley, 2009 .

Cost effectiveness of conservation practices in controlling water erosion in Iowa

Matthew J. Helmers, Mahdi Al-Kaisi, M. Helmers, 2009 .

Assessment of concentrated flow through riparian buffers

Matthew J. Helmers, Dean E. Eisenhauer, Thomas G. Franti, 2002 .

Reducing Nutrient Loss: Science Shows What Works

Matthew J. Helmers, Thomas M. Isenhart, John D. Lawrence, 2014 .

Improving Crop Growth Simulation in the Hydrologic Model DRAINMOD to Simulate Corn Yields in Subsurface Drained Landscapes

Matthew J. Helmers, Ranvir Singh, M. Helmers, 2008 .

Modeling the impacts of climate change on nitrogen losses and crop yield in a subsurface drained field

Matthew J. Helmers, Zhiming Qi, Lulin Xue, 2015, Climatic Change.

Prairie strips improve biodiversity and the delivery of multiple ecosystem services from corn–soybean croplands

Matthew J. Helmers, Mark D. Tomer, J. Gordon Arbuckle, 2017, Proceedings of the National Academy of Sciences.

An approach for using soil surveys to guide the placement of water quality buffers

Matthew J. Helmers, Dean E. Eisenhauer, Michael G. Dosskey, 2006 .

Review of Pesticide Retention Processes Occurring in Buffer Strips Receiving Agricultural Runoff 1

Steven K. Mickelson, Matthew J. Helmers, James L. Baker, 2010 .

Nitrogen Application Rate Effect on Nitrate-Nitrogen Concentration and Loss in Subsurface Drainage for a Corn-Soybean Rotation

Matthew J. Helmers, James L. Baker, Stewart W. Melvin, 2008 .

Temporal Subsurface Flow Patterns from Fifteen Years in North-Central Iowa

Matthew J. Helmers, James L. Baker, Stewart W. Melvin, 2005 .

Predicting effects of drainage water management in Iowa's subsurface drained landscapes

Matthew J. Helmers, Ranvir Singh, William G. Crumpton, 2007 .

Establishing conservation buffers using precision information

Matthew J. Helmers, Dean E. Eisenhauer, Michael G. Dosskey, 2005 .

Conservation practice establishment in two northeast Iowa watersheds: Strategies, water quality implications, and lessons learned

Matthew J. Helmers, Thomas M. Isenhart, Philip W. Gassman, 2010, Journal of Soil and Water Conservation.

Modeling Cadmium Transport in Neutral and Alkaline Soil Columns at Various Depths

Matthew J. Helmers, Shaoyuan Feng, Z. Qi, 2012 .

Calibration and validation of DRAINMOD to design subsurface drainage systems for Iowa's tile landscapes

Matthew J. Helmers, Ranvir Singh, Zhiming Qi, 2006 .

Water table, drainage, and yield response to drainage water management in southeast Iowa

Carl H. Pederson, Matthew J. Helmers, Gregory L. Brenneman, 2012, Journal of Soil and Water Conservation.

Drainage water management effects over five years on water tables, drainage, and yields in southeast Iowa

Carl H. Pederson, Matthew J. Helmers, Gregory L. Brenneman, 2017, Journal of Soil and Water Conservation.

Rating curve estimation of nutrient loads in Iowa rivers

Matthew J. Helmers, Greg A. Stenback, William G. Crumpton, 2011 .

Rye cover crop effects on maize: A system-level analysis

Matthew J. Helmers, Rafael A. Martinez-Feria, Sotirios V. Archontoulis, 2016 .

Landlabs: An Integrated Approach to Creating Agricultural Enterprises That Meet the Triple Bottom Line

Matthew J. Helmers, David Pitt, Carissa Schively Slotterback, 2013 .