갈색날개매미충의 방제전략을 확대하기 위하여 박하유에 대한 기피 효과를 살펴보았다. 23종의 방향유를 Y-tube olfactometer를 이용하여 후각 검정을 실시한 결과, 박하유(peppermint oil)와 lemongrass oil을 제외한 21종의 방향유는 갈색날개매미충에 대하여 기피반응이 나타나지 않았다. 단지 박하유만이 80% 이상의 기피효과가 관찰되었다. 박하유의 처리량에 따른 기피반응을 조사한 결과, 갈색날개매미충은 0.1, 0.5, 1 ㎕ 처리시 기피율이 점차 높아졌으며, 10 ㎕(76.47%) 처리량에서 높은 기피효과를 보였다. 박하유에는 1,8-cineole(4.7%), menthone(23.9%), iso-menthyl acetate(8.0%), menthol(53.7%) 등이 함유되어 있었다. 이들의 주요 성분함량을 혼합하여 Y-tube olfactometer를 이용하여 후각 검정한 결과, 5 ㎕ 처리시 76.2%의 높은 기피율을 보였다. 박하유는 야외에서 갈색날개매미충의 기피 및 산란 기피효과를 보였으나 단시간에만 활성이 강한 점과 약해의 가능성을 보아 제형 개발의 필요성이 대두된다.
In order to identify a new control measure for a sporadic insect pest, Pochazia shantungensis, 23 types of essential oils were screened for their repellent effects, with an olfactory test using a Y-tube olfactometer. Results indicated that 21 essential oils, except lemongrass oil and peppermint oil, did not show repellent activity against P. shantungensis. The repellent effect of peppermint oil was over 80%. When 0.1, 0.5, and 1 μl of peppermint oil were used, the rate of repelling of P. shantungensis gradually increased, and was as high as 76.5% when 10 μl was used. The main components of peppermint oil were 1,8-cineole, iso-menthyl acetate, menthone, and menthol, at 4.7, 8.0, 23.8 and 53.7%, respectively. When the three main components were mixed using a Y-tube olfactometer, a strong repellent effect (76.2%) was observed when 5 μl was used. Peppermint oil showed a repellent and ovipositional repellent effect against P. shantungensis in the field. However, this activity persists only for a short period, and high concentrations can lead to phytotoxicity. Therefore, it is necessary to develop ideal formulations.