Dissipation and Removal Rate of Dichlofluanid and Iprodione Residues on Greenhouse Cherry Tomato

Choi, Kyu-Il; Seong, Ki-Yong; Jeong, Tae-Gyun; Lee, Joo-Hwan; Hur, Jang-Hyun; Ko, Kwang‐Yong; Lee, Kyu-Seung

doi:10.5338/kjea.2002.21.4.231

Cited by 11 publications

(3 citation statements)

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“…부적합 농산물을 섭취한 소비자에게는 건강상 의 문제를 일으킬 수 있기 때문에 출하 전 생산단계 농산물에 대한 잔류농약 분석을 통해 부적합 농산물의 유통을 사전에 차단하는 것이 매우 중요하다. 이를 위해 생산단계 농산물 중 농약의 잔류량 변화조사를 통한 회귀식과 생물학적 반감기를 산출하여, MRL을 초과 가능성이 높은 작물에 대한 잔류량을 예측한다면 유통 농작물을 효율적으로 관리가 가능할 것이라 는 다수의 보고가 있다 [8][9][10][11][12]. 본 연구의 시험 대상 농약인 chromafenozide[2'-tert-butyl-5-methyl-2-(3,5-xyloyl) chromane-6-carbohydrazide]는 곤충생장 조절제로 탈피를 촉진하여 해충을 방제하는 농약이며, 다른 계통에 저항성이 생긴 해충의 방제에도 우수한 효과를 나타내는 것으로 알려져 있다 [13].…”

Section: 서 론unclassified

The Residual Characteristic of Chromafenozide and Pyridalyl in Kale

Sun¹,

Hwang²,

Jeong³

et al. 2022

Korean Journal of Environmental Agriculture

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BACKGROUND: It is a very important task to block distribution of the agricultural products contaminated with pesticides in advance to protect consumers from residual pesticides among the agricultural products. Therefore, this study was performed to determine residual characteristics of pesticides in time-dependent manner and present scientific evidences for pre-harvest residue limit (PHRL) setting. METHODS AND RESULTS:The tested pesticides, chromafenozide and pyridalyl were sprayed onto the kale twice (seven day intervals) and then the plant samples were collected at 0 (after 3 hours), 1, 2, 3, 5, 7, and 10 days after the last spraying. Residual concentration of chromafenozide in kale decreased with 74.9% (of decreased fraction, field 1) and 85.3% (field 2) and pyridalyl decreased with 81.2% (field 1) and 85.8% (field 2), calculated by comparisons of the concentrations at 0 day and 10 days. Also biological half-lives of chromafenozide in kale were 5.6 day (field 1) and 3.4 day (field 2), and those of pyridalyl were 4.3 day (field 1) and 3.5 day (field 2). CONCLUSION(S): If the residues of chromafenozide and pyridalyl in kale from 10 days before harvest are less than 37.6 mg/kg and 58.9 mg/kg, respectively, it is expected that safe kale below MRL can be supplied on the pre-harvest day.

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Section: 서 론unclassified

The Residual Characteristic of Chromafenozide and Pyridalyl in Kale

Sun¹,

Hwang²,

Jeong³

et al. 2022

Korean Journal of Environmental Agriculture

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“…According to Choi et al (2000Choi et al ( , 2002, Kim et al (2002), Seong et al (2004), and Lee et al (2008), the National Agricultural Products Quality Management Service sets the PHRL for the purpose of assuring agricultural product safety in the production stage. Furthermore, it evaluates the safety of agricultural products in the production stage according to the PHRL, investigates the amount of pesticide residues sprayed during the pre-harvest period, predicts the amount of pesticide residues at the time of harvest by computing the biological half-life and the decay constant, and prevents the distribution of unsuitable agricultural products that may exceed the MRL.…”

Section: Research Backgroundmentioning

confidence: 99%

Agribusiness: An Ethical Approach to Marketing

Ngoe¹

2011

AIM

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This study describes the development of a web-based system that collects all data generated in the research conducted to set pre-harvest residue limits (PHRLs) for agricultural product safety control. These data, including concentrations of pesticide residues, limit of detection, limit of quantitation, recoveries, weather charts, and growth rates, are incorporated into a database, a regression analysis of the data is performed using statistical techniques, and the PHRL for an agricultural product is automatically computed. The development and establishment of this system increased the efficiency and improved the reliability of the research in this area by standardizing the data and maintaining its accuracy without temporal or spatial limitations. The system permits automatic computation of the PHRL and a quick review of the goodness of fit of the regression model. By building and analyzing a database, it also allows data accumulated over the last 10 years to be utilized.

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“…Physicochemical properties of amisulbrom (MacBean, 2012) Common name Amisulbrom (Choi et al, 2002;Ko et al, 2003;Seong et al, 2004;Lee et al, 2008;Kim et al, 2009 (Hill and Inaba, 1990;Bentson, 1990), 재배기간 중 발 생될 수 있는 요인들을 종합 평가할 수 있는 실제 포장시험을 수행하여 농산물 중 잔류농약의 감소율을 평가하여야 한다.…”

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