Journal ArticleDOI
Fate and transport of glyphosate and aminomethylphosphonic acid in surface waters of agricultural basins.
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
Determination of the Ecotoxicity of Herbicides Roundup® Classic Pro and Garlon New in Aquatic and Terrestrial Environments.
TL;DR: The results of this study showed that all three tested substances were ecotoxic to the tested organisms.
Journal ArticleDOI
Ecotoxicology of Glyphosate, Its Formulants, and Environmental Degradation Products.
TL;DR: In this paper, the authors concluded that use of formulations of glyphosate under good agricultural practices presents a de minimis risk of direct and indirect adverse effects in non-target organisms, including plants.
DissertationDOI
Glyphosate and aminomethylphosphonic acid (AMPA) behavior in loess soils and off‐site transport risk assessment
Martins Bento,Célia Patrícia +1 more
TL;DR: In this paper, the authors investigated the environmental fate of glyphosate and its main metabolite aminomethylphosphonic acid (AMPA) in the loess soil environment and concluded that repeated glyphosate applications, particularly under dry soil conditions, increase the risk of accumulation of glyphosate in loess soils and, consequently, of onsite soil pollution and off-site transport with wind and water erosion.
Journal ArticleDOI
Effects of Temperature and Glyphosate on Fatty Acid Composition, Antioxidant Capacity, and Lipid Peroxidation in the Gastropod Lymneae sp.
Mariem Fadhlaoui,Isabelle Lavoie +1 more
TL;DR: In this article, a two-way factorial experiment was conducted to investigate the effects of temperature (20 °C/25 °C) and glyphosate on Lymnaea sp. After 21 days, antioxidant capacity and FA profiles were mainly affected by temperature, while glyphosate seemed to have a lesser impact.
Journal Article
The characterization of glyphosate degradation by Burkholderia multivorans WS-FJ9
TL;DR: This study aimed to investigate the degradation of glyphosate by an efficient phosphate solubilizing bacterium Burkholderia which was isolated from pine rhizosphere and reached 83% degradation rate.
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.