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Fruit and Leaf Damage by Conogethes punctiferalis (Lepidoptera: Crambidae) and Acrocercops transecta (Lepidoptera: Gracillariidae) in Walnut Orchards

호두나무 포장 내 복숭아명나방(나비목: 포충나방과)과 굴피가는나방(나비목: 가는나방과)에 의한 호두열매 및 잎 피해

  • Jung, Jong-Kook (Division of Insect Pests and Disease, National Institute of Forest Science) ;
  • Kwon, Hyeok Jun (Division of Insect Pests and Disease, National Institute of Forest Science) ;
  • Kim, Hwang (Division of Insect Pests and Disease, National Institute of Forest Science) ;
  • Kim, Hyun-Sun (Division of Insect Pests and Disease, National Institute of Forest Science) ;
  • Seo, Sang-Tae (Division of Insect Pests and Disease, National Institute of Forest Science) ;
  • Koh, Sanghyun (Division of Insect Pests and Disease, National Institute of Forest Science)
  • 정종국 (국립산림과학원 산림병해충연구과) ;
  • 권혁준 (국립산림과학원 산림병해충연구과) ;
  • 김황 (국립산림과학원 산림병해충연구과) ;
  • 김현선 (국립산림과학원 산림병해충연구과) ;
  • 서상태 (국립산림과학원 산림병해충연구과) ;
  • 고상현 (국립산림과학원 산림병해충연구과)
  • Received : 2017.11.24
  • Accepted : 2018.01.30
  • Published : 2018.03.01

Abstract

Walnuts are one of the most economically important fruit trees in forestry. In walnut orchards, however, studies examining damage by insect pests are limited. This study was conducted to investigate the rate of damage caused by Conogethes punctiferalis to walnut fruits and by Acrocercops transecta to walnut leaves. In 2017, the change of damage rate (caused by C. punctiferalis) to fruits were investigated in Buyeo. In addition, we counted fruits and leaves damaged by two lepidopteran species in Gimcheon, Buyeo, Yeongdong, and Hwaseong. Damaged fruits steadily increased in abundance with fruit growth in Buyeo, and the highest number of damaged fruits was documented in late summer. The rates of damage caused by C. punctiferalis to fruits in Buyeo, Gimcheon, and Hwaseong were 22.1%, 20.5%, and 11.7%, respectively. Additionally, the rates of damage caused by A. transecta to leaves in seedlings (58.5% on average) were significantly higher than to those in older trees (11.2% on average), irrespective of the study location. In conclusion, this study showed that C. punctiferalis and A. transecta were serious pests affecting walnut fruits and leaves, respectively. Therefore, management methods for these insect pests need to be developed.

Keywords

Insect pests;Yellow peach moth;Leaf-mining moth;Juglans

Acknowledgement

Grant : 2017년 조경 및 임산소득 수종 병해충의 발생특성 구명 및 방제법 개발

Supported by : 국립산림과학원

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