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Leaf Damage Symptom of Grape (Vitis vinifera) by Tea Bagworm (Eumeta minuscula) and Control Efficacies of Several Insecticides against the Eumeta minuscula

차주머니나방(Eumeta minuscula)에 의한 포도 잎 피해증상 및 몇 가지 약제의 차주머니방에 대한 방제효과

  • Song, Jin Sun (Horticultural & Herbal Crop Environment Division, National Horticulture of Horticultural & Herbal Science) ;
  • Lee, Chae Min (Department of Ecological Science, College of Ecology and Environment Sciences, Kyungpook National University) ;
  • Lee, Dong Woon (Department of Ecological Science, College of Ecology and Environment Sciences, Kyungpook National University)
  • 송진선 (원예특작과학원 원예특작환경과) ;
  • 이채민 (경북대학교 생태환경대학 생태과학과) ;
  • 이동운 (경북대학교 생태환경대학 생태과학과)
  • Received : 2012.11.15
  • Accepted : 2013.01.18
  • Published : 2013.03.31

Abstract

Damage of tea bagworms, Eumeta minuscula was observed for the first time from grape leaves of grape (varieties: Cambell Early and M.B.A.) from a vinery at Gumho-up, Gyeongsan, Gyeongbuk on 31 August, 2012. Activity of insecticides [Bacillus thuringiensis var. kurstaki (serotype IIIa, IIIb) WP, chlorantraniliprole 5% GP, methoxyfenozide 21% SC, spinetoram 5% GP, and spinosad 10% GP] was tested on fourth instar larvae of Eumeta minuscula in laboratory. Mortality of 4th instar of Eumeta minuscula was higher when treated with spinosad 10% WG (88.7%) and spinetoram 5% WG (67.7%) sprayed with field recommended concentration using a home sprayer in laboratory. Mortality decreased as the concentration decreased, however leaf damage rate was significantly different between the one-fourth rate and the control. Spinetoram 5% WG and spinosad 10% WG showed 63.7 and 55.7% respectively mortality of fourth instar Eumeta minuscula in field. Though these two insecticides could be used for the control of bagworms on grape, a more effective insecticide needs to be found.

Keywords

Control efficacy;Eumeta minuscula;Grape;Mortality

Acknowledgement

Supported by : 농림수산검역검사본부

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