Residual Characteristics of Fungicide Metrafenone in Perilla Leave, Lettuce and Ponytail Radish and Estimation of Reducing Residual Concentration

Noh, Hyun Ho; Jo, Seung Hyun; Lee, Jung Woo; Shin, Eun Sang; Shin, Hyeon Woo; Kwon, Hye-Young; Kyung, Kee Sung

doi:10.7585/kjps.2018.23.1.51

kjps

2019

DOI: 10.7585/kjps.2018.23.1.51

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Residual Characteristics of Fungicide Metrafenone in Perilla Leave, Lettuce and Ponytail Radish and Estimation of Reducing Residual Concentration

Hyun Ho Noh¹,

Seung Hyun Jo²,

Jung Woo Lee³

et al.

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Cited by 5 publications

References 11 publications

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Performance Comparison of Basic Pesticide Residue Prediction Models in Domestic Agricultural Environments

Park,

Suh,

Lee

et al. 2024

J Korean Soc Environ Eng

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Objectives : This study assessed the performance of two FOCUS simulation models, Step 1 and Step 2 models which were officially used for pesticide review process in the European Union, in domestic agricultural environments.Material and methods : A performance comparison was made between two models for three selected pesticides (i.e., bifenthrin, fenitrothion and iprodione) which were widely adopted in Korean agriculture. A combination of different crop interception and runoff scenarios was used in the simulation. During the simulation, two selected crops (i.e., citrus crop and pome and stone fruits) were treated with individual pesticides at a concentration of 100 mL 5 times at 30-day intervals by foliar feeding. The simulation results of two models were also validated against field observations complied at around 500 monitoring sites over the period 2018-2023.Results : Our results found that Step 2 model had superior prediction performance in three selected pesticides than Step 1 model, and produced the simulation results which were also in good agreement with the field monitoring data. The residues of three pesticides (i.e., predicted environmental concentration, PEC) in surface water calculated from Step 2 model were generally higher for pome and stone fruits than for citrus crop. Step 2 model also predicted high pesticide residues in sediment under conditions of no crop interception and (extremely) high runoff out of various scenarios provided in the model.Conclusion : All these results demonstrated that FOCUS Step 2 model was capable of estimating PEC values at different environment media under domestic agricultural conditions.

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Performance Comparison of Basic Pesticide Residue Prediction Models in Domestic Agricultural Environments

Park,

Suh,

Lee

et al. 2024

J Korean Soc Environ Eng

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Plant Back Interval of Fluopyram Based on Primary Crop-derived Soil and Bare Soil Residues for Rotational Cultivation of Radish

Kim¹,

Yoon²,

Lim³

et al. 2021

Korean Journal of Environmental Agriculture

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BACKGROUND: Pesticide uptake by a rotational crop after being used for the primary crop is a potential cause of violation against the pesticide law if the pesticide is not registered in the secondary crop. This study was conducted to investigate the plant back interval (PBI) of fluopyram for the rotational cultivation of radish. METHODS AND RESULTS: Two experimental approaches were performed the evaluation of residues in radish cultivated successively in soil 16 days after treated with fluopyram onto pepper plant (T1) and in radish cultivated in bare soil treated with fluopyram at PBI 30 and PBI 60 days (T2). A modified QuEChERS method coupled with LC/MS/MS analysis showed good linearity of matrixmatched standard calibration of fluopyram with the coefficient values of determination greater than 0.995. Recovery values at levels of 0.01, 0.05, 0.1 and 0.25 mg/kg ranged from average 84.9 to 117.6% with RSD less than 10%. Fluopyram residues in radish harvested from T1 and T2 were found as levels less than maximum residue limit. CONCLUSION: This study suggests 20~30 days as the PBI of fluopyram for the rotational cultivation of radish in the greenhouse soil treated with fluopyram used for pepper as the primary crop.

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Dissipation Patterns of Dimethoate and Omethoate in Leafy Vegetables for Estimation of Residue Source

Yang¹,

TaeWoo²,

Lee³

et al. 2021

kjps

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Residual Characteristics of Fungicide Metrafenone in Perilla Leave, Lettuce and Ponytail Radish and Estimation of Reducing Residual Concentration

Cited by 5 publications

References 11 publications

Performance Comparison of Basic Pesticide Residue Prediction Models in Domestic Agricultural Environments

Performance Comparison of Basic Pesticide Residue Prediction Models in Domestic Agricultural Environments

Plant Back Interval of Fluopyram Based on Primary Crop-derived Soil and Bare Soil Residues for Rotational Cultivation of Radish

Dissipation Patterns of Dimethoate and Omethoate in Leafy Vegetables for Estimation of Residue Source

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