Dissipation and residue of dimethomorph in potato plants produced and dietary intake risk assessment

Yang, Liupeng; Zheng, Qun; Lin, Sukun; Wang, Yongqing; Zhu, Qizhan; Cheng, Dongmei; Chen, Jianjun; Zhang, Zhixiang

doi:10.1080/03067319.2020.1737037

Cited by 16 publications

(15 citation statements)

References 33 publications

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“…Vegetable contamination by pesticide residues is an ongoing challenge, and the dissipation rate of pesticides after the application is an important factor and a useful tool for assessing the behaviour of its residue (Yang et al, 2020;Omirou, et al, 2009). Tables 3 detail the dissipation regression equation, halflife, and other relevant data of fosthiazate in tomatoes and cherry tomatoes.…”

Section: Fosthiazate Dissipation In Tomatoes and Cherry Tomatoes Under Eld Conditionsmentioning

confidence: 99%

Dissipation and residue of fosthiazate in tomato and cherry tomato and a risk assessment of dietary intake

Lin

et al. 2021

Environ Sci Pollut Res

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In this study, the safety and risk of fosthiazate as a nematicide against root-knot nematode in tomato and cherry tomato were evaluated. The dissipation and residue of fosthiazate for 28 days in tomato and cherry tomato were determined and studied by HPLC after simple, rapid pre-treatment. The mean recovery was 83.79 ~ 94.18%, and the relative standard deviation was 3.97 ~ 7.40%. Results showed that the halflives of fosthiazate in tomato (4.81 ~ 5.37 days) were signi cantly lower than that in cherry tomato (5.25 5.73 days). At the pre-harvest interval (PHI) of 21 days, the residues of tomatoes and cherry tomatoes were 0.032 ~ 0.046 mg/kg, which were lower than the maximum residue level established in China. The potential risks of fosthiazate exposure through the dietary intake of tomatoes and cherry tomatoes to different populations were also studied. According to the results of dietary risk assessment, the residual levels of fosthiazate were within the acceptable range of long-term dietary risk in different populations in China within the sampling interval of 21 days after the application of pesticide. Our results show that fosthiazate as a nematicide in the eld control of root-knot nematode has high safety and low risk, and can provide a reference for the safe and reasonable use of fosthiazate as a nematicidein in the eld.

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Section: Fosthiazate Dissipation In Tomatoes and Cherry Tomatoes Under Eld Conditionsmentioning

confidence: 99%

Dissipation and residue of fosthiazate in tomato and cherry tomato and a risk assessment of dietary intake

Lin

et al. 2021

Environ Sci Pollut Res

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“…Characterization is reported in the Supporting Information, Method S1. High‐performance liquid chromatography (HPLC) analysis was performed using the method of Yang et al 29 …”

Section: Methodsmentioning

confidence: 99%

A pH‐ and redox‐stimulated responsive hollow mesoporous silica for triggered delivery of fungicides to control downy mildew of Luffa cylindrica

Yang

Chen

Yan

et al. 2022

Pest Management Science

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BACKGROUND: Downy mildew, a devastating disease of cucurbitaceous crops caused by Pseudoperonospora cubensis. Although a variety of fungicides are used to control downy mildew, choosing an effective product can be challenging. Environmental stimulus-responsive pesticide delivery systems have great potential to improve the effectiveness of disease and pest control and reduce the impact on environmentally beneficial organisms. RESULTS: In this work, a disulfide bond (SS)-modified and chitosan oligosaccharide (COS)-capped hollow mesoporous silica (HMS) pesticide delivery system was synthesized using a hard template method for the control of downy mildew in cucurbit crops. The synthesized nanoparticles were loaded with dimethomorph (DMM)

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“…The dietary risk assessment combined the national estimated daily intake (NEDI) with the risk quotient (RQ). NEDI and RQ are calculated by the following equations [ 31 ]: NEDI = ∑ (STMRi × Fi)/bw RQ% = NEDI/ADI × 100% where STMRi (mg/kg) represents the supervised trials’ median residue values of fluopyram in carrots from China. If a suitable STMR was not available, the corresponding MRL could be used instead; Fi refers to the food consumption data of a certain agricultural product or food in China [ 32 ]; bw (kg) is the average body weight for a population age group [ 33 ], and RQ is the chronic risk quotient determined by comparing the NEDI and ADI values.…”

Section: Methodsmentioning

confidence: 99%

Residue and Risk Assessment of Fluopyram in Carrot Tissues

Yang

Zhao

et al. 2022

Molecules

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This study describes the variation in residue behavior of fluopyram in soil, carrot root, and carrot leaf samples after the application of fluopyram (41.7% suspension, Bayer) by foliar spray or root irrigation at the standard of 250.00 g active ingredient per hectare (a.i./ha) and double-dose treatment (500.00 g a.i./ha). Fluopyram and its metabolite fluopyram-benzamide were extracted and cleaned up using the QuEChERS method and subsequently quantified with LC-QQQ-MS/MS. The LOD and LOQ of the developed method were in the range of 0.05–2.65 ug/kg and 0.16–8.82 ug/kg, respectively. After root irrigation, the final residues detected in edible parts were 0.60 and 1.80 mg/kg, respectively, when 250.00 and 500.00 g a.i./ha were applied, which is much higher than the maximum residue limit in China (0.40 mg/kg). In contrast, after spray application, most of the fluopyram dissipated from the surface of carrot leaves, and the final residues in carrot roots were both only 0.05 mg/kg. Dietary risk assessments revealed a 23–40% risk quotient for the root irrigation method, which was higher than that for the foliar spray method (8–14%). This is the first report comparing the residue behavior of fluopyram applied by root irrigation and foliar spray. This study demonstrates the difference in risk associated with the two application methods and can serve as a reference for the safe application of fluopyram.

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Dissipation and residue of dimethomorph in potato plants produced and dietary intake risk assessment

Cited by 16 publications

References 33 publications

Dissipation and residue of fosthiazate in tomato and cherry tomato and a risk assessment of dietary intake

Dissipation and residue of fosthiazate in tomato and cherry tomato and a risk assessment of dietary intake

A pH‐ and redox‐stimulated responsive hollow mesoporous silica for triggered delivery of fungicides to control downy mildew of Luffa cylindrica

Residue and Risk Assessment of Fluopyram in Carrot Tissues

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