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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Coupe, Richard H. Kalkhoff, Stephen J. Capel, Paul D. Gregoire, Caroline |
| Spatial Coverage | United States |
| Description | Country affiliation: United States Author Affiliation: Coupe RH ( US Geological Survey, Pearl, MS, USA. rhcoupe@usgs.gov) |
| Abstract | BACKGROUND: Glyphosate [N-(phosphonomethyl)glycine] is a herbicide used widely throughout the world in the production of many crops and is heavily used on soybeans, corn and cotton. Glyphosate is used in almost all agricultural areas of the United States, and the agricultural use of glyphosate has increased from less than 10 000 Mg in 1992 to more than 80 000 Mg in 2007. The greatest intensity of glyphosate use is in the midwestern United States, where applications are predominantly to genetically modified corn and soybeans. In spite of the increase in usage across the United States, the characterization of the transport of glyphosate and its degradate aminomethylphosphonic acid (AMPA) on a watershed scale is lacking. RESULTS: Glyphosate and AMPA were frequently detected in the surface waters of four agricultural basins. The frequency and magnitude of detections varied across basins, and the load, as a percentage of use, ranged from 0.009 to 0.86% and could be related to three general characteristics: source strength, rainfall runoff and flow route. CONCLUSIONS: Glyphosate use in a watershed results in some occurrence in surface water; however, the watersheds most at risk for the offsite transport of glyphosate are those with high application rates, rainfall that results in overland runoff and a flow route that does not include transport through the soil. |
| File Format | HTM / HTML |
| ISSN | 1526498X |
| Issue Number | 1 |
| Volume Number | 68 |
| e-ISSN | 15264998 |
| Journal | Pest Management Science |
| Language | English |
| Publisher | Wiley |
| Publisher Date | 2012-01-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Entomology Discipline Agronomy Glycine Analogs & Derivatives Herbicides Analysis Organophosphonates Water Pollutants, Chemical Environmental Monitoring United States Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Insect Science Agronomy and Crop Science |
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