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Potential Suitability of Subirrigation For Field Crops in The U.S. Midwest
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org
Citation: Transactions of the ASABE. (in press). (doi: 10.13031/trans.13783) @2020
Authors: Jane Frankenberger, Feng Yu, Jason Ackerson, Benjamin Reinhart
Keywords: Controlled drainage, Fuzzy rating, Geographic Information System (GIS), Gridded Soil Survey Geographic Database (gSSURGO), Midwestern U.S., Subirrigation
Highlights A fuzzy rating system was created based on published criteria for subirrigation suitability. Maps showing potential suitability for subirrigation were created for the U.S. Midwest. 78,500 km2 across the U.S. Midwest is potentially suitability for subirrigation. Maps identify potential subirrigation locations pending onsite assessment. Abstract. Subirrigation through subsurface tile drains has the potential to increase crop yields and improve water quality in tile-drained landscapes, but has not been widely implemented. Identifying high potential locations for subirrigation may help advance planning and implementation of this practice. In this study we developed a fuzzy rating system for subirrigation suitability utilizing Gridded Soil Survey Geographic Database (gSSURGO). Maps of the fuzzy rating system identified locations for potential high suitability of subirrigation, and highlighted physiographic regions highly conducive to the practice. We identified 78,500 km2 or about 9% of agricultural land in the Midwest with high potential suitability for subirrigation, and where onsite investigation may be targeted. The largest areas of high potential suitability were found in Minnesota, Illinois, and Indiana. Results from the fuzzy rating analysis are provided to the public through three different channels: downloadable data repository, map service, and web map tool. Ultimately, this study can facilitate the adoption of subirrigation by highlighting areas where subirrigation may potentially be a viable practice. Keywords.
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