Dr. Matthew Helmers

Projects: Before the Streams: Modeling the Effectiveness of In-Field and Edge-of-Field Practices in Reducing Nitrogen Loads (2018)

Evaluation of Measurement Methods as Surrogates for Tile-Flow Nitrate-N Concentrations (2018)

Quantifying Hotspots of Nitrate and Dissolved Phosphorus Losses from Cropped Depressions and Impacts at the Catchment Scale (2018)

Delivery-Scale Evaluation and Modeling of Nutrient Reduction Practices (2017)

Does Quantity and Quality of Tile Drainage Water Impact In-stream Eutrophication Potential? Evidence from a Long-term Biofuel Cropping Systems Experiment (2017)

Impacts of Cover Crops on Phosphorus and Nitrogen Loss with Surface Runoff (2017)

Limiting Nitrogen Immobilization in Cover Crop Systems (2017)

Water Quality Evaluation of Prairie Strips Across Iowa (2017)

Evaluation of Measurement Methods as Surrogates for Tile-Flow Nitrate-N Concentrations (2016)

Improving the Capacity to Detect Load Reductions (2016)

Impacts of Cover Crops on Phosphorus and Nitrogen Loss with Surface Runoff (2015)

Quantifying Temporal and Spatial Variability in NO3-N Leaching Across Iowa (2015)

Water Quality Performance of Prairie Strips (2015)

Drainage Water Quality Impacts of Current Future Agricultural Management Practices (2014)

Phosphorus Loss from Ephemeral Gully Formation and Sediment Transport (2014)

Impacts of Cover Crops on Phosphorus and Nitrogen Loss with Surface Runoff (2013)

Nonpoint Source Nitrogen and Phosphorous Loads at Implementation Scale: Direct Agricultural Nutrient Loads to Surface Waters in Relation to Land Use and Management (2013)