바이오에너지작물 거대억새 가해 해충 이화명나방 유충 월동양상

• 영문명: Overwintering pattern of larvae of Chilo suppressalis Walker in the bioenergy crop Miscanthus sacchariflorus cv. Geodae 1
• 발행기관: 한국작물학회
• 저자명: 안기홍(Gi Hong An) 양정우(Jungwoo Yang) 장윤희(Yun-Hui Jang) 엄경란(Kyoung Ran Um) 김석(Seok Kim) 차영록(Young-Lok Cha) 윤영미(Young-Mi Yoon) 문윤호(Youn-Ho Moon) 안종웅(Joung Woong Ahn) 유경단(Gyeong-Dan Yu)
• 간행물 정보: 『한국작물학회지』제59권 제3호, 369~374쪽, 전체 6쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2014.09.30

영문 초록

The rice stem borer (Chilo suppressalis Walker) was one of the most destructive pest of rice for the 1960s and 1970s in Korea. Recently, it is newly recognized as a potential risk factor to the biomass yield of bioenergy crops. The current research was firstly conducted to investigate overwintering larvae population density and pattern of rice stem borer attacking Miscanthus sacchariflorus cv. Geodae 1 which is referred to as an ideal lignocellulosic bioenergy crop in Korea. Population density of larvae per 1 m2 in stems and rhizomes at the Miscanthus experimental plots and rates of damage (wormhole, abscission) of M. sacchariflorus cv. Goedae 1 were investigated from October 2012 to March 2013. The population of larvae per 1 m2 in stems of Miscanthus were 23, 4, 1, and 1 in October, November, December 2012, and January 2013, respectively. Over the same period, the population of larvae in basal stem rots and rhizomes were increased, whereas decreased in stems. Interestingly, the positions of larvae for overwintering in Miscanthus were confirmed to 5~10 cm below the soil surface such as basal stem rot and rhizome, whereas the most common overwintering position known in rice is a part of stem on the ground such as rice straw and rice stubble. It would suggest that the larvae gradually moved to bottom of stems and rhizomes in soil in line with decline in temperature. Moreover, the damage rates of stems per 1 m2 were up to more than 50% in some places. In conclusion, this might be the first report that rice stem borer could affect the productivity of biomass of Miscanthus in case of mass cultivation. Moreover, it should be necessary to make a decision in insect control management for this bioenergy feedstock and other related crops.

목차

재료 및 방법

결과 및 고찰

적요

사사

키워드

Bioenergy crop Chilo suppressalis Miscanthus sacchariflorus cv. Geodae 1 Overwintering larval density