Behavior of glyphosate and aminomethylphosphonic acid (AMPA) in soils and water of reservoir Radeburg II catchment (Saxony/Germany)

Grunewald, Karsten; Schmidt, W.; Unger, Christiana; Hanschmann, Gudrun

doi:10.1002/1522-2624(200102)164:1<65::aid-jpln65>3.0.co;2-g

Cited by 91 publications

(45 citation statements)

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“…T 1/2 decreased as follows across the three soils: Toulouse > Dijon > Châlons (Table 4). These values are consistent with those reported by Rueppel et al ,18 but are generally very small compared with those reported elsewhere in the literature23–25 because of optimum conditions of soil temperature and moisture in our study. Glyphosate was more persistent in the Toulouse soil where adsorption was highest, and less persistent in Châlons soil where adsorption was weakest (Table 5).…”

Section: Resultssupporting

confidence: 93%

Environmental fate of herbicides trifluralin, metazachlor, metamitron and sulcotrione compared with that of glyphosate, a substitute broad spectrum herbicide for different glyphosate‐resistant crops

Mamy¹,

Barriuso²,

Gabrielle³

2005

Pest Management Science

126

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The introduction of crops resistant to the broad spectrum herbicide glyphosate, N-(phosphonomethyl)glycine, may constitute an answer to increased contamination of the environment by herbicides, since it should reduce the total amount of herbicide needed and the number of active ingredients. However, there are few published data comparing the fate of glyphosate in the environment, particularly in soil, with that of substitute herbicides. The objective of this study is to compare the fate of glyphosate in three soils with that of four herbicides frequently used on crops that might be glyphosate resistant: trifluralin, alpha,alpha,alpha-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine, and metazachlor, 2-chloro-N-(pyrazol-1-ylmethyl)acet-2',6'-xylidide for oilseed rape, metamitron, 4-amino-4,5-dihydro-3-methyl-6-phenyl-1,2,4-triazin-5-one for sugarbeet and sulcotrione, 2-(2-chloro-4-mesylbenzoyl)cyclohexane-1,3-dione for maize. The distribution of herbicides between the volatilized, mineralized, extractable and non-extractable fractions was studied, along with the formation of their metabolites in laboratory experiments using 14C-labelled herbicides, over a period of 140 days. The main dissipation pathways were mineralization for glyphosate and sulcotrione, volatilization for trifluralin and non-extractable residues formation for metazachlor and metamitron. The five herbicides had low persistence. Glyphosate had the shortest half-life, which varied with soil type, whereas trifluralin had the longest. The half-lives of metazachlor and sulcotrione were comparable, whereas that of metamitron was highly variable. Glyphosate, metazachlor and sulcotrione were degraded into persistent metabolites. Low amounts of trifluralin and metamitron metabolites were observed. At 140 days after herbicide applications, the amounts of glyphosate and its metabolite residues in soils were the lowest in two soils, but not in the third soil, a loamy sand with low pH. The environmental advantage in using glyphosate due to its rapid degradation is counterbalanced by accumulation of aminomethylphosphonic acid specifically in the context of extensive use of glyphosate.

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Section: Resultssupporting

confidence: 93%

Environmental fate of herbicides trifluralin, metazachlor, metamitron and sulcotrione compared with that of glyphosate, a substitute broad spectrum herbicide for different glyphosate‐resistant crops

Mamy¹,

Barriuso²,

Gabrielle³

2005

Pest Management Science

126

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“…Glyphosate's degradation can occur rapidly in the soil, with values of DT50 between 3 to 40 days (e.g. Rueppel et al, 1977;Smith and Aubin, 1993;Grunewald et al, 2001;Simonsen et al, 2008;Zablotowicz et al, 2009;Bergstrӧm et al, 2011). Since the recovery of TEG was not 100%, some of the glyphosate could have degraded into sarcosine or completely dissipated by microbial activity during the transport process.…”

Section: Glyphosate Retention In Soil Columnsmentioning

confidence: 99%

Adsorption and mobility of glyphosate in different soils under no-till and conventional tillage

2016

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“…To estimate the relative contributions of spray drift and wind erosion to glyphosate and AMPA in the air, a simple mass balance model is suggested. The model makes six assumptions: the control volume is a 2,000-m column of well-mixed air with a base of 1 m Â 1 m; the only two sources of glyphosate to the air are spray drift and wind erosion; wind erosion is the only source for AMPA; the transformation (biodegradation) of glyphosate to AMPA occurs only in the soil [36]; no or negligible photo-oxidation of glyphosate or AMPA occurred; and the ratio of glyphosate concentration in soil to AMPA concentration in soil (S) decreases weekly from 5.1 (first week after application) to 0.1 (twelfth week after application). This is based on the logarithmic fitting of field observations reported by Grunewald et al [36], and wind erosion produces air particles with the same glyphosate to AMPA ratio as found in the soil.…”

Section: Timing Of Applicationmentioning

confidence: 99%

Occurrence and fate of the herbicide glyphosate and its degradate aminomethylphosphonic acid in the atmosphere

Chang

Simcik

Capel

2011

Environmental Toxicology and Chemistry

140

106

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Abstract-This is the first report on the ambient levels of glyphosate, the most widely used herbicide in the United States, and its major degradation product, aminomethylphosphonic acid (AMPA), in air and rain. Concurrent, weekly integrated air particle and rain samples were collected during two growing seasons in agricultural areas in Mississippi and Iowa. Rain was also collected in Indiana in a preliminary phase of the study. The frequency of glyphosate detection ranged from 60 to 100% in both air and rain. The concentrations of glyphosate ranged from <0.01 to 9.1 ng/m 3 and from <0.1 to 2.5 mg/L in air and rain samples, respectively. The frequency of detection and median and maximum concentrations of glyphosate in air were similar or greater to those of the other high-use herbicides observed in the Mississippi River basin, whereas its concentration in rain was greater than the other herbicides. It is not known what percentage of the applied glyphosate is introduced into the air, but it was estimated that up to 0.7% of application is removed from the air in rainfall.

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Behavior of glyphosate and aminomethylphosphonic acid (AMPA) in soils and water of reservoir Radeburg II catchment (Saxony/Germany)

Cited by 91 publications

References 0 publications

Environmental fate of herbicides trifluralin, metazachlor, metamitron and sulcotrione compared with that of glyphosate, a substitute broad spectrum herbicide for different glyphosate‐resistant crops

Environmental fate of herbicides trifluralin, metazachlor, metamitron and sulcotrione compared with that of glyphosate, a substitute broad spectrum herbicide for different glyphosate‐resistant crops

Adsorption and mobility of glyphosate in different soils under no-till and conventional tillage

Occurrence and fate of the herbicide glyphosate and its degradate aminomethylphosphonic acid in the atmosphere

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