Widespread occurrence of neonicotinoid insecticides in streams in a high corn and soybean producing region, USA
July 24, 2014
Neonicotinoid insecticides are of environmental concern, but little is known about their occurrence in surface water. An area of intense corn and soybean production in the Midwestern United States was chosen to study this issue because of the high agricultural use of neonicotinoids via both seed treatments and other forms of application. Water samples were collected from nine stream sites during the 2013 growing season. The results for the 79 water samples documented similar patterns among sites for both frequency of detection and concentration (maximum:median) with clothianidin (75%, 257 ng/L:8.2 ng/L) > thiamethoxam (47%, 185 ng/L:<2 ng/L) > imidacloprid (23%, 42.7 ng/L: <2 ng/L). Neonicotinoids were detected at all nine sites sampled even though the basin areas spanned four orders of magnitude. Temporal patterns in concentrations reveal pulses of neonicotinoids associated with rainfall events during crop planting, suggesting seed treatments as their likely source.
Citation Information
Publication Year | 2014 |
---|---|
Title | Widespread occurrence of neonicotinoid insecticides in streams in a high corn and soybean producing region, USA |
DOI | 10.1016/j.envpol.2014.06.033 |
Authors | Michelle Hladik, Dana W. Kolpin, Kathryn Kuivila |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Environmental Pollution |
Index ID | 70117614 |
Record Source | USGS Publications Warehouse |
USGS Organization | California Water Science Center; Toxic Substances Hydrology Program |
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Dana W Kolpin
Research Hydrologist
Research Hydrologist
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Kathryn Kuivila (Former Employee)
Scientist Emeritus
Scientist Emeritus
Related
Dana W Kolpin
Research Hydrologist
Research Hydrologist
Email
Phone
Kathryn Kuivila (Former Employee)
Scientist Emeritus
Scientist Emeritus