Residual Pattern of Procymidone and Bifenthrin in Perilla Leaf During the Period of Cultivation and Storage

Ko, Kwang‐Yong; Lee, Yong-Jae; Won, Dong-Jun; Park, Hye-Jin; Lee, Kyu-Seung

doi:10.5338/kjea.2003.22.1.047

Cited by 9 publications

(3 citation statements)

References 7 publications

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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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“…농약은 농산물 생산에 있어 매우 중요한 농자재로서 그 생 산 증가에 크게 기여하고 있다. 그러나 작물에 살포된 농약은 본래의 목적을 달성한 후 분해되어 작물에 잔류되지 않아야 하는 것이 이상적이지만 대부분의 농약은 합성유기화합물이기 때문에 각기 다른 분해 과정을 거치면서 소실되거나 토양 또는 작물에 잔류하게 된다 Kim et al, 1997 (Lee et al, 2010;Kwon and Lee, 2003 Kim et al, 2002;Ko et al, 2003;Ko et al, 2004 (Fig. 3).…”

Section: 서 론unclassified

Establishment of Pre-Harvest Residue Limit of Fungicides Pyrimethanil and Trifloxystrobin during Cultivation of Persimmon

Lee¹,

Kim²,

Lee³

et al. 2012

Korean Journal of Environmental Agriculture

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BACKGROUND:This study was carried out to establish pre-harvest residue limit of fungicides pyrimethanil and trifloxystrobin in persimmon, based on dissipation and biological half-lives of two fungicides residue. METHODS AND RESULTS: Both pyrimethanil and trifloxystrobin were extracted with acetonitrile, clean-up with NH 2 SPE cartridge and residue were analyzed by HPLC/DAD. Limit of Detection was 0.01 mg/kg. Average recovery were 81 ± 1.62%, 98 ± 1.58% of pyrimethanil, and 91 ± 2.94%, 98 ± 1.25% of trifloxystrobin at fortification levels at 0.1 and 0.5 mg/kg, respectively. CONCLUSION: The biological half-lives of pyrimethanil were 15.6 and 11.6 days at sprayed with recommended and double dosage, respectively. The biological half-lives of trifloxystrobin were 10.4 and 10.3 days at sprayed with recommended and double dosage, respectively. The pre-harvest residue limit of pyrimethanil and trifloxystrobin were recommended as 2.69 and 0.83 mg/kg for 10 days

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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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