Impacts of Subsurface Drainage
in Corn-Soybean Rotations
By Dr. Matt Helmers
and Extension Engineer,
Iowa State University
Watch Presentation (32 min 26 sec)
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This presentation will help consultants, growers, and other practitioners in the Midwest region increase their understanding of subsurface drainage and factors to consider when planning or evaluating the need for a subsurface drainage system. Specifically, the impacts of drainage on water movement, crop production, and nitrate-nitrogen loss will be described. In addition, factors to consider related to drain spacing and sizing will be described.
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