Safety Assesment of Pesticides Treated on Garlic to Control Black Rot during the Storage

마늘 저장 중 부패병 방제를 위하여 처리한 농약의 경시적 농약 잔류량 평가

  • You, Oh-Jong (Research Policy Bureau, RDA) ;
  • Jin, Yong-Duk (Department of Crop Life Safety, NAAS, RDA) ;
  • Hwang, Se-Gu (Danyang Garlic Experiment Station, Chungbook Agricultural Research and Extension Services) ;
  • Lee, Yong-Hoon (School of Bio Technology, Chonbuk National University) ;
  • Ihm, Yang-Bin (Research Policy Bureau, RDA) ;
  • Kim, Jin-Bae (Department of Crop Life Safety, NAAS, RDA) ;
  • Kwon, Oh-Kyung (Department of Crop Life Safety, NAAS, RDA) ;
  • Kyung, Kee-Sung (School of Applied Life Science and Environment, Chungbuk National University) ;
  • Kim, Jang-Eok (School of Applied Biosciences, Kyungpook National University)
  • 유오종 (농촌진흥청 연구정책국) ;
  • 진용덕 (농촌진흥청 국립농업과학원 농산물안전성부) ;
  • 황세구 (충북농업기술원 단양마늘시험장) ;
  • 이용훈 (전북대학교 생명공학부) ;
  • 임양빈 (농촌진흥청 연구정책국) ;
  • 김진배 (농촌진흥청 국립농업과학원 농산물안전성부) ;
  • 권오경 (농촌진흥청 국립농업과학원 농산물안전성부) ;
  • 경기성 (충북대학교 응용생명환경학부) ;
  • 김장억 (경북대학교 응용생물화학)
  • Published : 2009.09.30

Abstract

We tested and selected some agrochemicals reducing the occurrence of major pests and diseases during garlic storage. Tebuconazole, diphenylamine and prochloraz as fungicides and dimethate as a insecticide were sprayed or drenched before harvest. And the harvested garlic was dipped in each of the agrochemicals. The residues of pesticides in garlic bulbs treated were analyzed every month from harvesting time for 6 months. In case of Danyang garlic, which was treated with pesticides before and after harvesting, the residues of diphenylamine, tebuconazole, prochloraz, and dimethoate ranged from 0.008 to 0.28, from 0.03 to 0.32, from 0.02 to 0.12, and from 0.02 to 0.25 mg/kg, respectively. In case of Uiseong garlic, the residues of diphenylamine, tebuconazole, prochloraz and dimethoate ranged from 0.008 to 0.09, from 0.08 to 0.45, from 0.02 to 0.57, and from 0.04 to 0.38 mg/kg, respectively. And, in case of Namdo garlic, the residues of diphenylamine, tebuconazole, prochloraz, and dimethoate ranged from 0.008 to 0.52, from 0.07 to 1.67, from 0.02 to 0.17, and from 0.03 to 0.73 mg/kg, respectively. Some of the garlic samples treated with tebuconazole exceeded its maximum residue limits (MRLs) of 0.1 mg/kg set by Korea Food Drug Administration (KFDA), but dimethoate was detected below its MRL of 1.0 mg/kg. In case of diphenylamine and prochloraz, their MRLs for garlic were not set. Adapting their MRLs, 5.0 mg/kg of diphenylamine for apple and pear and 0.5 mg/kg of prochloraz for strawberry and grape, residue levels of diphenylamine and procloraz were below than their MRLs, with the exception of samples two times treated with procloraz in Namdo garlic. These results indicate that dimethoate can be used as an agrochemical to control the postharvest disease in garlic in only MRL aspect.

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