초록
블루베리에서의 갈색날개매미충 산란특성과 산란량 감소를 위한 황색끈끈이 트랩의 효과를 조사하였다. 수관상부, 중부, 하부에서의 갈색날개매미충 난괴 발생율은 각각 56.6~60.2%, 23.8~28.1%, 11.7~19.7%로 반 이상이 상부에 집중 분포하였다. 난괴가 한 개만 발생한 가지비율이 50.9%로 가장 높았으며 난괴수가 2개인 가지비율은 20.5%로 다음으로 높았고, 3개와 4개 이상인 가지비율은 각각 14.6%, 14.0%였다. 황색끈끈이트랩을 1개월간 설치한 결과 갈색날개매미충 유살량은 트랩 당 평균 17.1마리였고, 주당 난괴수는 트랩처리구와 무처리구 각각 0.4, 1.3으로 황색끈끈이트랩을 설치 할 경우 무처리구에 비해 산란량이 1/3로 감소하였다. 즉 황색끈끈이트랩 설치로 갈색날개매미충 산란량을 줄일 수 있을 것으로 기대된다.
This study was conducted to investigate the characteristics of oviposition and the effect of density suppression by yellow-colored sticky trap on Ricania shantungensis in blueberry. The occurrence of an egg mass of R. shantungensis in the upper, middle and lower region were 56.6~60.2%, 23.8~28.1% and 11.7~19.7%, respectively. The number of egg masses in the branch was investigated. Percentage of the branch with one egg mass was greatest (50.9%) than with two (20.5%), three (14.6%) and over four (14.0%). The effect of yellow-colored sticky trap to reduce the number of R. shantungensis egg masses in blueberry was also investigated. In a month after yellow sticky trap installation, 17.1 adults of R. shantungensis were attracted per trap. Moreover, the number of egg masses on a tree in yellow-colored sticky trap plot was much lower (0.4) than control (1.3). Consequently, this result shows that use of yellow-colored sticky trap may contribute to decrease ovipisotion rate of R. shantungensis in blueberry.