Uptake and persistence of pesticides in plants: Measurements and model estimates for imidacloprid after foliar and soil application

Juraske, Ronnie; Castells, Francesc; Vijay, A; Muñoz, Pere; Antón, Assumpció

doi:10.1016/j.jhazmat.2008.10.043

Cited by 110 publications

(57 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]). In most cases, the underlying different equations have been solved for steady-state and/or numerically for dynamic studies.…”

Section: A Rein Et Al Sar and Qsar In Environmental Researchmentioning

confidence: 99%

See 1 more Smart Citation

New concepts for dynamic plant uptake models

Rein

Legind

Trapp

2011

SAR and QSAR in Environmental Research

View full text Add to dashboard Cite

Models for the prediction of chemical uptake into plants are widely applied tools for human and wildlife exposure assessment, pesticide design and for environmental biotechnology such as phytoremediation. Steady-state considerations are often applied, because they are simple and have a small data need. However, often the emission pattern is non-steady. Examples are pesticide spraying, or the application of manure and sewage sludge on agricultural fields. In these scenarios, steady-state solutions are not valid, and dynamic simulation is required.We compared different approaches for dynamic modelling of plant uptake in order to identify relevant processes and time-scales of processes in the soil-plant-air system. Based on the outcome, a new model concept for plant uptake models was developed, approximating logistic growth and coupling transpiration to growing plant mass. The underlying system of differential equations was solved analytically for the inhomogenous case, i.e., for constant input. By superposition of the results of n periods, changes in emission and input data between periods are considered. This combination allows to mimick most input functions that are relevant in practice.The model was set up, parameterised and tested for uptake into growing crops. The outcome was compared to a numerical solution, to verify the mathematical structure.

show abstract

“…[5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]). In most cases, the underlying different equations have been solved for steady-state and/or numerically for dynamic studies.…”

Section: A Rein Et Al Sar and Qsar In Environmental Researchmentioning

confidence: 99%

“…for the aerial plant part [7] and for root uptake and translocation to stem and fruits [12,[16][17], but these are limited to constant conditions (i.e. one period).…”

Section: Analytical Versus Numerical Modelsmentioning

confidence: 99%

New concepts for dynamic plant uptake models

Rein

Legind

Trapp

2011

SAR and QSAR in Environmental Research

View full text Add to dashboard Cite

show abstract

“…The popularity of neonicotinoid use has risen in part because of the diverse means by which the chemicals can be applied. This class of insecticides can be applied as granules in the soil (Lanka et al, 2014), foliar sprays (Juraske et al, 2009), soil drenches (Stoner and Eitzer, 2012), tree injections (Cowles et al, 2006) and topically to animals (Dryden et al, 2011). However, the most widespread application method of neonicotinoids has been as seed treatments that protect plants from herbivory (Jeschke et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

The effects of insecticide dose and herbivore density on tri-trophic effects of thiamethoxam in a system involving wheat, aphids, and ladybeetles

2015

View full text Add to dashboard Cite

a b s t r a c tWe assess how herbivore density and insecticide dose affects the tri-trophic interactions among thiamethoxam-treated wheat (Triticum sp.), Rhophalosiphum padi and the predatory Coleomegilla maculata DeGeer. In the first experiment 2nd and 4th instar C. maculata were fed aphids reared for 24 h on wheat plants treated with sub-lethal thiamethoxam soil drenches to assess the effect of insecticidal dose on the predator. In the second experiment a constant, sub-lethal thiamethoxam soil drench was used on wheat plants, but the plants were infested with different densities of aphids. Aphids from each density treatment were then fed to C. maculata 2nd instars. Insecticide levels within wheat and aphid tissues were quantified using a competitive ELISA. In experiment one, 4th instars of C. maculata displayed no negative effects after consuming aphids from treated plants. However, 2nd instars of C. maculata ate more treated aphids than untreated aphids and larval development times varied between the untreated larvae and those receiving the low dose of the insecticide. In experiment two, the 2nd instar C. maculata displayed slower walking speeds after consuming aphids from low aphid density plants. Thiamethoxam within wheat tissue was found at higher levels with increasing dose. This insecticide was also found at higher levels in wheat plants with the lowest aphid density. Clothianidin, a toxic metabolite of thiamethoxam, was found in aphids that had fed on thiamethoxam-treated wheat, but no differences between treatments were observed. The neonicotinoid treatment altered the quality of R. padi as prey for 2nd instar C. maculata, but this depended on the aphid infestation level on the plants. In addition to revealing a potential deleterious effect of thiamethoxam systemic insecticides in wheat, our assays provide insight into the design and interpretation of toxicity assays involving systemic neonicotinoids and herbivores.Published by Elsevier Ltd.

show abstract

“…농작물에 살포된 농약은 작물체에 부착된 농약이 작물의 엽면을 통하여 침투하거나 토양으로부터 뿌리를 통하여 흡 수하는 두 가지 경로를 통해 작물체 내로 흡수 이행될 수 있다 (Collins et al, 2006;Juraske et al, 2009). 이 중 작물 의 엽면을 통한 농약의 침투이행은 엽면 살포를 주로 하는 농약 제형의 살포시 주요한 흡수경로라 할 수 있다.…”

Section: 서 론unclassified

Patterns of Uptake and Removal by Processing Types of Triazole Fungicides in Onion

Lee¹,

Hwang²,

Kim³

2015

The Korean Journal of Pesticide Science

View full text Add to dashboard Cite

Uptake of the triazole fungicides, fluquinconazole and tetraconazole from shoot part of onion was assessed by determining residual amounts of applied fungicides in edible and shoot parts of onion after the foliar application. Combined product of fluquinconazole and tetraconazole (14:7, v/v) as a 21% active ingredient of suspended emulsion formulation was diluted at ratio of 500 and 200 times and sprayed on the shoot part of onion after sealing its root part with absorbent paper. At 10 days after the pesticide application, fluquinconazole residue in the shoot part was the greatest as 5.2 mg/kg at 200 times-dilution treatment, while tetraconazole residue in this part was the smallest as 1.2 mg/kg at 500 times-dilution treatment. On the other hand, the pesticide residues in edible parts of onion at all the treatments were less than limits of detection, 0.01 mg/kg. However, fluquinconazole residues in the edible part of onion divided into three groups such as 1st, 2nd, and 3rd layers were detected at concentrations of 0.04 or 0.24 mg/kg, and these results show the different distribution of pesticides in onion depending on divided layers. In addition, chopped onions were soaked in pesticide solutions prepared with dilution of 1,000 times, cooked using three food processing types such as boiling, stir frying, and pickling, and the pesticide residues in them were analyzed. The analyzed results showed the largest pesticide dissipation in onion followed boiling process (76.9~92.6%). Key words

show abstract

Uptake and persistence of pesticides in plants: Measurements and model estimates for imidacloprid after foliar and soil application

Cited by 110 publications

References 36 publications

New concepts for dynamic plant uptake models

New concepts for dynamic plant uptake models

The effects of insecticide dose and herbivore density on tri-trophic effects of thiamethoxam in a system involving wheat, aphids, and ladybeetles

Patterns of Uptake and Removal by Processing Types of Triazole Fungicides in Onion

Contact Info

Product

Resources

About