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The Extrapolations to Reduce the Need for Pesticide Residues Trials on Continuous Harvesting Leafy Vegetables

농약 잔류 시험을 위한 연속수확 엽채소류의 외삽

  • Son, Kyeong-Ae (National Academy of Agricultural Science, Rural Development Administration) ;
  • Im, Geon-Jae (National Academy of Agricultural Science, Rural Development Administration) ;
  • Hong, Su-Myeong (National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Chan Sub (National Academy of Agricultural Science, Rural Development Administration) ;
  • Gil, Geun-Hwan (National Academy of Agricultural Science, Rural Development Administration) ;
  • Jin, Yong-Duk (National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Jinba (National Academy of Agricultural Science, Rural Development Administration) ;
  • Ihm, Yang Bin (National Academy of Agricultural Science, Rural Development Administration) ;
  • Ko, Hyeon Seok (Knowledge & information officer, Rural Development Administration) ;
  • Kim, Jang Eok (A School of Applied Bioscience, Kyungpook National University)
  • 손경애 (농촌진흥청 국립농업과학원) ;
  • 임건재 (농촌진흥청 국립농업과학원) ;
  • 홍수명 (농촌진흥청 국립농업과학원) ;
  • 김찬섭 (농촌진흥청 국립농업과학원) ;
  • 길근환 (농촌진흥청 국립농업과학원) ;
  • 진용덕 (농촌진흥청 국립농업과학원) ;
  • 김진배 (농촌진흥청 국립농업과학원) ;
  • 임양빈 (농촌진흥청 국립농업과학원) ;
  • 고현석 (농촌진흥청 지식정보화담당관실) ;
  • 김장억 (경북대학교 농업생명과학대학)
  • Received : 2013.09.04
  • Accepted : 2013.10.07
  • Published : 2013.12.31

Abstract

This study was carried out to investigate the pesticide residue pattern among different leafy vegetables applied with foliar spraying under greenhouse and to check extrapolating from some residue trial data to other minor crops. Leafy vegetables used in this study were: Mustard greens (Brassica juncea L.), Kale (Brassica oleracea L.), Dacheongchae (a kind of pak-choi (Brassica rapa subsp. chinensis L.)), Leaf broccoli (Brassica oleracea var alboglabra), Perilla leaf (Perilla frutescens (L.) Britton var. Frutescens), Leaf lettuce (Lactuca sativa L.), Swiss chard (Beta vulgaris L. subsp. vulgaris) and Red leaf chicory (Cichorium intybus L. var. foliosum Hegi). These are cultivated all year under indoor or outdoor and cut the leaf from plant continuously during harvest time. The amounts of pesticide deposit in/on the continuous harvesting leafy vegetables were affected by the ratios of leaf area to weight. Ratio of perilla leaf was the largest among crops as 58 $cm^2/g$. The residue levels of 7 pesticides in/on perilla leaf were the highest than those of other crops through the statistical analysis from zero day to fifth day after last application. The representative crop in 8 crops was perilla leaf selected based on the amounts of daily consumption and the high residues. This study suggest that the continuous harvesting leafy greens should be separated from the one time harvesting leafy vegetables for the pesticide recommendations because of different harvesting habits and pre-harvest intervals.

Acknowledgement

Supported by : 국립농업과학원

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