Influence of Different Organic Amendments on the Degradation, Metabolism, and Adsorption of Terbuthylazine

Dolaptsoglou, Christina; Karpouzas, Dimitrios G.; Menkissoglu‐Spiroudi, Urania; Eleftherohorinos, Ilias G.; Voudrias, Evangelos A.

doi:10.2134/jeq2006.0388

Cited by 51 publications

(49 citation statements)

References 41 publications

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“…Terbuthylazine is a herbicide that, together with atrazine, is an active ingredient in 'Terbuzine TM ', a pesticide used to control mainly broad-leafed weeds in maize (Dolaptsoglou et al, 2007). Terbuthylazine is a triazine pesticide that is moderately toxic to fish and highly toxic to zooplankton (PAN, 2009).…”

Section: The 'Possible Risk' Categorymentioning

confidence: 99%

Preliminary risk assessment of common-use pesticides using PRIMET and PERPEST pesticide risk models in a semi-arid subtropical region

Malherbe

Vuren

Wepener

2013

WSA

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The pesticide risk in agriculture in developing countries has not been adequately studied due to the extent and fate of pesticides in the environment often being unknown. South Africa is a country that has significant pressure on its freshwater and agricultural resources, which increases the possibility of pesticide effects. Thus, the aim of this study was to evaluate the use of the PRIMET (Pesticide Risks in the Tropics to Man, Environment and Trade) and PERPEST (Predicting the Ecological Risk of PESTicides) models to predict pesticide exposure and effects on aquatic ecosystems due to spray drift. Vaalharts Irrigation Scheme is situated in the Northern Cape Province and receives water from the Vaal River for 43 000 ha of agricultural land. Crops in the area mostly consist of wheat, maize and groundnuts. Data gathered through household surveys with farmers were used in PRIMET as a first-tier estimate of the potential risk of the pesticides. The Predicted Effect Concentrations (PEC) calculated for the pesticides indicating a possible to definite risk were then used as input for PERPEST. PERPEST is a higher-tier model that predicts the potential effects of a pesticide on various grouped endpoints in the aquatic environment. The PRIMET results indicated most pesticides posed no risk to the environment, except the pyrethroid, deltamethrin. The ETR for deltamethrin indicated a possible to definite risk to the aquatic environment. The PERPEST results for deltamethrin indicated a high probability of clear effects on insects, micro-and macro-crustacean communities, with a lower probability for rotifers, algae, macrophytes and fish. PRIMET and PERPEST provided valid estimates of risk for pesticides and could be used effectively in South Africa.

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Section: The 'Possible Risk' Categorymentioning

confidence: 99%

Preliminary risk assessment of common-use pesticides using PRIMET and PERPEST pesticide risk models in a semi-arid subtropical region

Malherbe

Vuren

Wepener

2013

WSA

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“…Terbuthylazine is a chloro-s-triazine herbicide that is widely used as a selective herbicide for vegetation management in agricultural and forest production (Gous 2005;Dolaptsoglou et al 2007). It is one of the most common herbicides used to control weeds in Pinus radiata plantations in New Zealand (Gous 2005).…”

Section: Background Aim and Scopementioning

confidence: 99%

Sorption of the herbicide terbuthylazine in two New Zealand forest soils amended with biosolids and biochars

et al. 2009

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Background, aim, and scope Terbuthylazine is one of the most commonly used herbicides for vegetation management in forest plantations in New Zealand. Knowledge about the sorption of terbuthylazine on forest soils, especially the influence of coexisting organic amendments, remains obscure. In this study, we evaluated the effects of biosolids and biochars on the sorption of terbuthylazine to forest soils. Materials and methods Two pumice soils, including a forest landing site soil with low soil organic matter content and an organic carbon rich topsoil under standard forest management, were sampled from a 2-year-old replanted pine plantation. The soils were mixed with four organic amendments, including two thermally dried biosolids with one digested and the other undigested, a biochar produced from high temperature pyrolysis (700°C), and a biochar from pyrolysis with a lower temperature (approximately 350°C). A batch equilibration method was used to determine terbuthylazine adsorption-desorption in organic amendment-treated and untreated soils. Adsorption and desorption isotherms were described with the Freundlich equation.Results and discussion Adsorption and desorption isotherms in the soils with or without organic amendments were well described by the Freundlich model. The undigested or digested biosolids added to the topsoil had a negligible or limited effect on the adsorption to terbuthylazine. The addition of the other amendments to the two soils all enhanced the adsorption. The biochars displayed higher efficiency in improving soils' adsorption capacity to terbuthylazine than the biosolids. Among the organic amendments evaluated, the biochar obtained from high temperature pyrolysis demonstrated the most significant enhancement on adsorption with an enhancing factor of 63; whereas, the digested biosolids showed the weakest enhancement. Furthermore, terbuthylazine adsorbed by the digested biosolids appeared to be more easily desorbed than that by biochar treatments. Conclusions This work indicates that the addition of organic amendments to forest soils, particularly biochar to a soil with low native organic matter, may enhance soil sorption of terbuthylazine and thus reduce the possibility of the hydrophobic herbicide leaching to groundwater.

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“…According to other authors (Yang et al, 2005 andCabrera et al, 2007), pesticide mobility can be increased due to the higher content of dissolved organic carbon caused by soil organic matter addition. Dolaptsoglou et al (2007) showed that addition of poultry compost and urban sewage sludge in a clay loam soil reduces terbuthylazine degradation compared to non-amended soils, while the addition of corn straw did not modify it. Kodešová et al (2012) found that chlortoluron mobility in a Luvic Chernozem soil decreased up to a compost content in soil of 6%, and then increased with larger compost contents (7% and 8%).…”

Section: Introductionmentioning

confidence: 98%

Modeling water and isoproturon dynamics in a heterogeneous soil profile under different urban waste compost applications

et al. 2016

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International audienceCompost amendments and tillage practices can modify soil structure and create heterogeneities at the local scale. Tillage affects soil physical properties and consequently water and solute transport in soil, while compost addition to soil influences pesticide sorption and degradation processes. Based on the long-term field experiment QualiAgro (a INRA–Veolia partnership), a modeling study was carried out using HYDRUS-2D to evaluate how two different compost types combined with the presence of heterogeneities due to tillage affect water and isoproturon dynamics in soil compared to a control plot. A municipal solid waste compost (MSW) and a co-compost of sewage sludge and green wastes (SGW) have been applied to experimental plots. In each plot, wick lysimeters, TDR probes, and tensiometers were installed to monitor water and solute dynamics. In the plowed layer, four zones differing in their structure were identified: compacted clods, non-compacted soil, interfurrows, and the plow pan. From 2004 to 2010, the unamended control (CONT) plot had the largest cumulative water outflow (1388 mm) compared to the MSW plot (962 mm) and SGW plot (979 mm). After calibration, the model was able to describe cumulative water outflow for the whole 2004–2010 period with a model efficiency value of 0.99 for all three plots. The CONT plot had the largest isoproturon cumulated leaching (21.31 μg) while similar cumulated isoproturon leaching was measured in the SGW (0.663 μg) and MSW (0.245 μg) plots. The model was able to simulate isoproturon leaching patterns except for the large preferential flow events that were observed in the MSW and CONT plots. The timing of these preferential flow events could be reproduced by the model but not their magnitude. Modeling results indicate that spatial and temporal variations in pesticide degradation rate due to tillage and compost application play a major role in the dynamics of isoproturon leaching. Both types of compost were found to reduce isoproturon leaching on the 6 year duration of the experiment

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Influence of Different Organic Amendments on the Degradation, Metabolism, and Adsorption of Terbuthylazine

Cited by 51 publications

References 41 publications

Preliminary risk assessment of common-use pesticides using PRIMET and PERPEST pesticide risk models in a semi-arid subtropical region

Preliminary risk assessment of common-use pesticides using PRIMET and PERPEST pesticide risk models in a semi-arid subtropical region

Sorption of the herbicide terbuthylazine in two New Zealand forest soils amended with biosolids and biochars

Modeling water and isoproturon dynamics in a heterogeneous soil profile under different urban waste compost applications

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