Journal ArticleDOI
Fate and transport of glyphosate and aminomethylphosphonic acid in surface waters of agricultural basins.
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TLDR
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.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 10000 Mg in 1992 to more than 80000 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 aminomethylphosphonicacid (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 andflow 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. c � 2011 Society of Chemical Industryread more
Citations
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Journal ArticleDOI
Magnetite nanoparticles as efficient materials for removal of glyphosate from water
Hyoungwon Park,Alexander May,Luis Portilla,Hanno Dietrich,Friedrich Münch,Tobias Rejek,Marco Sarcletti,Leena Banspach,Dirk Zahn,Marcus Halik +9 more
TL;DR: In this article, a method for the magnetic remediation of glyphosate from artificial and real water samples to below the maximum permissible value or even below the analytical detection limit was presented, using magnetite (Fe3O4) nanoparticles.
Journal ArticleDOI
Impact of Glyphosate on the Honey Bee Gut Microbiota: Effects of Intensity, Duration, and Timing of Exposure.
Erick V. S. Motta,Nancy A. Moran +1 more
TL;DR: Sublethal doses of glyphosate reduce the abundance of beneficial bacteria and affect microbial diversity in the guts of honey bees, regardless of whether exposure occurs during or after microbiota acquisition, and this impact depends on concentration, duration of exposure, and stage of community establishment.
Journal ArticleDOI
Decay characteristics and erosion-related transport of glyphosate in Chinese loess soil under field conditions
Xiaomei Yang,Xiaomei Yang,Fei Wang,Fei Wang,Célia P.M. Bento,Lei Meng,Ruud van Dam,Hans G.J. Mol,Guobin Liu,Guobin Liu,Coen J. Ritsema,Violette Geissen,Violette Geissen +12 more
TL;DR: Although the rate of glyphosate decay is rapid in Chinese loess soil, the risks of glyphosate and AMPA need to be taken into account especially in the area with highly erosive rainfall.
Journal ArticleDOI
Influence of land use and region on glyphosate and aminomethylphosphonic acid in streams in the USA
Laura Medalie,Nancy T. Baker,Megan E. Shoda,Wesley W. Stone,Michael T. Meyer,Edward G. Stets,Michaelah C. Wilson +6 more
TL;DR: It is shown that glyphosate and AMPA are found in nearly all of 70 streams throughout the United States at concentrations far below human health or ecological benchmarks, with less occurrence in the Northeast and that undeveloped land, classified as such by land use near the sampling station, has lower concentrations compared to other types of land.
Journal ArticleDOI
Fate, eco-toxicological characteristics, and treatment processes applied to water polluted with glyphosate: A critical review
Cristina Alejandra Villamar-Ayala,Jeanette Verónica Carrera-Cevallos,Ruben Vasquez-Medrano,Patricio J. Espinoza-Montero +3 more
TL;DR: Glyphosate is the most widely used active ingredient of Glyphosate Based Herbicides (GBHs), and which has environmental mobility towards water by its physicochemical characteristics.
References
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Book ChapterDOI
Ecotoxicological Risk Assessment for Roundup ® Herbicide
TL;DR: Glyphosate-based weed control products are among the most widely used broad-spectrum herbicides in the world and have been extensively investigated for their potential to produce adverse effects in nontarget organisms as discussed by the authors.
Journal ArticleDOI
The Pesticide Content of Surface Water Draining from Agricultural Fields—A Review
TL;DR: The literature on pesticide losses in runoff waters from agricultural fields is reviewed in this paper, where the majority of commercial pesticides, total losses are 0.5%0 or less of the amounts applied, unless severe rainfall conditions occur within 1-2 weeks after application.
Journal ArticleDOI
Adsorption, Mobility, and Microbial Degradation of Glyphosate in the Soil
TL;DR: Glyphosate [N-(phosphonomethyl)glycine] was readily bound to kaolinite, illite, and bentonite clay and to charcoal and muck but not to ethyl cellulose as mentioned in this paper.
Journal ArticleDOI
The current status and environmental impacts of glyphosate-resistant crops: a review.
TL;DR: Glyphosate-resistant crops have promoted the adoption of reduced- or no-tillage agriculture in the USA and Argentina, providing a substantial environmental benefit and the development and use of failsafe introgression barriers in crops with such linked genes is needed.
Journal ArticleDOI
Hydrologic evaluation of the soil and water assessment tool for a large tile-drained watershed in iowa
TL;DR: In this paper, the Soil and Water Assessment Tool (SWAT) water quality model is designed to assess nonpoint and point source pollution and was recently modified for tile drainage.