Impact of 4R Management on Crop Production
and Nitrate-Nitrogen Loss in Tile Drainage

Matthew Helmers; Carl H. Pederson; John E. Sawyer; Terry Tuttle

Northwest and Allee Research and Demonstration Farms

Impact of 4R Management on Crop Production and Nitrate-Nitrogen Loss in Tile Drainage

Authors: Matthew Helmers (Iowa State University) , Carl H. Pederson (Iowa State University) , John E. Sawyer (Iowa State Univerity) , Terry Tuttle (Iowa State University)

Abstract

Corn belt corn and soybean producers increasingly are challenged to maximize crop production while addressing the contributions farm practices make to the Gulf of Mexico 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 evaluates various promising N management methods and technologies by documenting the nitrate-N export and crop yield.

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How to Cite: Helmers, M. , Pederson, C. H. , Sawyer, J. E. & Tuttle, T. (2018) “Impact of 4R Management on Crop Production and Nitrate-Nitrogen Loss in Tile Drainage”, Iowa State University Research and Demonstration Farms Progress Reports. 2017(1).