Persistence and Distribution of Trunk-Injected Abamectin in Pinus thunbergii and Pinus koraiensis Tissues

수간주입한 아바멕틴의 곰솔과 잣나무 내 분포와 지속성

  • Lee, Sang-Myeong (Southern Forest Research Center, Korea Forest Research Institute) ;
  • Kim, Dong-Soo (Southern Forest Research Center, Korea Forest Research Institute) ;
  • Kim, Chul-Su (Forest Human Resources Development Institute, Korea Forest Service) ;
  • Cho, Kyu-Seong (Division of Applied Life Science, Gyeongsang National University) ;
  • Choo, Ho-Yul (Department of Applied Biology and Environmental Sciences, Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Lee, Dong-Woon (Department of Applied Biology, Institute of Agricultural Sciences, Kyungpook National University)
  • 이상명 (국립산림과학원 남부산림연구소) ;
  • 김동수 (국립산림과학원 남부산림연구소) ;
  • 김철수 (산림청 산림인력개발원) ;
  • 조규성 (경상대학교 환경생명화학과) ;
  • 추호렬 (경상대학교 응용생물환경학과, 농업생명과학연구원) ;
  • 이동운 (경북대학교 생물응용학과)
  • Published : 2009.09.30

Abstract

The residues of abamectin 1.8% EC, resisted for control of pine wood nematode, Bursaphelenchus xylophilus in pine tree were surveyed in tissue of Pinus thunbergii and P. koraiensis after injection of a liquid formulation. Limits of detection of abamectin in tissue of P. thunbergii were $0.05\;mg\;kg^{-1}$ and mean recoveries at $0.5\;mg\;kg^{-1}$ trunk injection were 90.9% and 93.1% respectively in stem and trunk of P. thunbergii. Abamectin 1.8% EC, trunk injected in 15 m height P. thunbergii were detected in all stem (edible part of carrier insect of pine wood nematode, Monochamus alternatus) from 0.29 to $0.73\;mg\;kg^{-1}$ after 150 days injection. Amount of residue of abamectin 1.8% EC in 12.6 cm mean breast height diameter (DBH) P. thunbergii were variable depending on individual trees in natural forest. Amount of residues in lower and middle part of trunk were reduced with the passage of the injection time. In upper part of trunk were detected $1.84\;mg\;kg^{-1}$ on 30 days after injection however $0.65\;mg\;kg^{-1}$ on 15 days after injection and under detection limit on 100 and 180 days after injection in P. thunbergii. Bottom and middle parts of crown were detected $0.183\;mg\;kg^{-1}$ and $0.173\;mg\;kg^{-1}$ respectively on 180 days after injection in P. thunbergii. Mean residues of abamectin in crown and trunk were $0.80\;mg\;kg^{-1}$ and $0.30\;mg\;kg^{-1}$ on 170 days after trunk injection in 20 cm DBH and 9 m height P. koraiensis. Mean residues of abamectin in crown and trunk were $0.67\;mg\;kg^{-1}$ and $0.36\;mg\;kg^{-1}$ on 170 days after trunk injection in 15 cm DBH and 6 m height P. koraiensis.

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