Northwest and Allee Research and Demonstration Farm
Corn Belt corn and soybean producers are increasingly challenged to maximize crop production while addressing the contributions farm practices make to Gulf hypoxia. Based on the need for nitrate-N reductions to meet water quality goals, new management practices are needed to reduce nitrate-N losses at minimal cost and maximum economic benefits. This three-year field research and demonstration project is evaluating various promising N management methods and technologies by documenting the nitrate-N export and crop yield from various systems.
Iowa State University
Helmers, Matthew; Sawyer, John; and Sievers, Josh, "Impact of 4R Management on Crop Production and Nitrate-Nitrogen Loss in Tile Drainage" (2015). Iowa State Research Farm Progress Reports. 2136.