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Nitrates more Susceptible in Soybean Fields, Iowa Study
University of Iowa researchers and Iowa Soybean Association officials report that soybean fields in the Raccoon River watershed are more prone to nitrate loss than corn fields. The study, spanning 1999 to 2014, emphasizes crop rotation and fall tillage avoidance as ways to cut nitrate losses, noting higher tile drainage flow under soybeans increases nitrate delivery to streams. The work relies on a large data set from Des Moines Water Works and partners, highlighting climate variability as a key driver of nutrient losses in the watershed feeding Des Moines and containing several nitrate readings above EPA standards.
MENTIONED IN THIS ARTICLE
University of Iowa
Nhr-Hydroscience and Engineering
Journal of Soil and Water Conservation
Roger Wolf
Iowa Soybean Association
Raccoon River
Jones
Wolf
Des Moines
Iowa
Raccoon
Des Moines Water Works
Iowa Soybean Association and Agriculture
Clean Water Alliance