Fate of Two Herbicides in Zero‐Tension Lysimeters and in Field Soil

Kasteel, R.; Pütz, Thomas; Vanderborght, Jan; Vereecken, Harry

doi:10.2134/jeq2009.0236

Cited by 12 publications

(14 citation statements)

References 43 publications

(83 reference statements)

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“…Although ETD is much more water-soluble, its biodegradability is much lower than that of MBT, resulting in proposed environmental half-lives of 162 to 2,059 d compared to approximately 24 to 230 d for MBT 21, 37, 38. Furthermore, MBT was found to be biodegradable 38–40, giving an additional explanation for the overall smaller MBT residue fractions in the water extracts.…”

Section: Resultsmentioning

confidence: 98%

Dry–wet cycles increase pesticide residue release from soil

Jablonowski

Linden

Köppchen

et al. 2012

Enviro Toxic and Chemistry

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Soil drying and rewetting may alter the release and availability of aged pesticide residues in soils. A laboratory experiment was conducted to evaluate the influence of soil drying and wetting on the release of pesticide residues. Soil containing environmentally long-term aged (9–17 years) 14C-labeled residues of the herbicides ethidimuron (ETD) and methabenzthiazuron (MBT) and the fungicide anilazine (ANI) showed a significantly higher release of 14C activity in water extracts of previously dried soil compared to constantly moistened soil throughout all samples (ETD: p < 0.1, MBT and ANI: p < 0.01). The extracted 14C activity accounted for 44% (ETD), 15% (MBT), and 20% (ANI) of total residual 14C activity in the samples after 20 successive dry–wet cycles, in contrast to 15% (ETD), 5% (MBT), and 6% (ANI) in extracts of constantly moistened soils. In the dry–wet soils, the dissolved organic carbon (DOC) content correlated with the measured 14C activity in the aqueous liquids and indicated a potential association of DOC with the pesticide molecules. Liquid chromatography MS/MS analyses of the water extracts of dry–wet soils revealed ETD and MBT in detectable amounts, accounting for 1.83 and 0.01%, respectively, of total applied water-extractable parent compound per soil layer. These findings demonstrate a potential remobilization of environmentally aged pesticide residue fractions from soils due to abiotic stresses such as wet–dry cycles. Environ. Toxicol. Chem. 2012; 31: 1941–1947. © 2012 SETAC

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Section: Resultsmentioning

confidence: 98%

Dry–wet cycles increase pesticide residue release from soil

Jablonowski

Linden

Köppchen

et al. 2012

Enviro Toxic and Chemistry

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“…They found K oc_f values of 313 and 660 L kg −1 , respectively. In the case of MBT, lab values tend to be larger than the value derived by Kasteel et al (2010) The K oc values derived from batch experiments were often >1000 L kg −1…”

Section: Methodsmentioning

confidence: 89%

“…Kasteel et al (2010) estimated field K oc values for ETD and MBT by inversely solving the CDE equation using measured resident concentration profiles. They found K oc_f values of 313 and 660 L kg −1 , respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Kempf and Brusseau (2009) used TMA to derive the retardation coefficient. We used TMA to derive the equilibrium sorption parameters for the ethidimuron (ETD) data presented by Dressel (2003) The use of TMA in both studies is justified by the relative short duration of the column experiments performed by Kempf and Brusseau (2009) and the high half‐life values for ETD (Kasteel et al, 2010) compared with the duration of the experiment. Spatial moment analysis was used to derive the mean pore water velocity for the studies presented in Table 2 and for which this information was not readily available.…”

Section: Deriving Sorption Parameters From Batch and Column Studiesmentioning

confidence: 99%

“…Estimation of the mean pore water velocity for the transport period of 61 d was obtained by dividing the reported average rainfall fl ux of 2.2 mm d −1 by the average mean water content value of 0.18 during the chlortoluron experiment, resulting in 12.2 mm d −1 . Kasteel et al (2010) estimated fi eld K oc values for ETD and MBT by inversely solving the CDE equation using measured resident concentration profi les. Th ey found K oc_f values of 313 and 660 L kg −1 , respectively.…”

Section: Batch and Field Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

Do Lab-Derived Distribution Coefficient Values of Pesticides Match Distribution Coefficient Values Determined from Column and Field-Scale Experiments? A Critical Analysis of Relevant Literature

et al. 2011

Self Cite

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In this study, we analyzed sorption parameters for pesticides that were derived from batch and column or batch and field experiments. The batch experiments analyzed in this study were run with the same pesticide and soil as in the column and field experiments. We analyzed the relationship between the pore water velocity of the column and field experiments, solute residence times, and sorption parameters, such as the organic carbon normalized distribution coefficient ( ) and the mass exchange coefficient in kinetic models, as well as the predictability of sorption parameters from basic soil properties. The batch/column analysis included 38 studies with a total of 139 observations. The batch/field analysis included five studies, resulting in a dataset of 24 observations. For the batch/column data, power law relationships between pore water velocity, residence time, and sorption constants were derived. The unexplained variability in these equations was reduced, taking into account the saturation status and the packing status (disturbed-undisturbed) of the soil sample. A new regression equation was derived that allows estimating the values derived from column experiments using organic matter and bulk density with an value of 0.56. Regression analysis of the batch/column data showed that the relationship between batch- and column-derived values depends on the saturation status and packing of the soil column. Analysis of the batch/field data showed that as the batch-derived value becomes larger, field-derived values tend to be lower than the corresponding batch-derived values, and vice versa. The present dataset also showed that the variability in the ratio of batch- to column-derived value increases with increasing pore water velocity, with a maximum value approaching 3.5.

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Long-term persistence of various 14C-labeled pesticides in soils

Jablonowski

Linden

Köppchen

et al. 2012

Environmental Pollution

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The fate of the 14C-labeled herbicides ethidimuron (ETD), methabenzthiazuron (MBT), and the fungicide anilazine (ANI) in soils was evaluated after long-term aging (9-17 years) in field based lysimeters subject to crop rotation. Analysis of residual 14C activity in the soils revealed 19% (ETD soil; 0-10 cm depth), 35% (MBT soil; 0-30), and 43% (ANI soil; 0-30) of the total initially applied. Accelerated solvent extraction yielded 90% (ETD soil), 26% (MBT soil), and 41% (ANI soil) of residual pesticide 14C activity in the samples. LC-MS/MS analysis revealed the parent compounds ETD and MBT, accounting for 3% and 2% of applied active ingredient in the soil layer, as well as dihydroxy-anilazine as the primary ANI metabolite. The results for ETD and MBT were matching with values obtained from samples of a 12 year old field plot experiment. The data demonstrate the long-term persistence of these pesticides in soils based on outdoor trials.

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Fate of Two Herbicides in Zero‐Tension Lysimeters and in Field Soil

Cited by 12 publications

References 43 publications

Dry–wet cycles increase pesticide residue release from soil

Dry–wet cycles increase pesticide residue release from soil

Do Lab-Derived Distribution Coefficient Values of Pesticides Match Distribution Coefficient Values Determined from Column and Field-Scale Experiments? A Critical Analysis of Relevant Literature

Long-term persistence of various 14C-labeled pesticides in soils

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