This study was done to evaluate the susceptibility, systemic effect, residual effect and control effect in each developmental stages of biotype Q of sweetpotato whitefly against insecticides, acetamiprid+spinetoram SC and dinotefuran SG. Two insecticides were showed similar activity against the eggs, and showed higher activity in acetamiprid+spinetoram SC against the nymph and adult. In systemic effect, two insecticides have a similar activity. It was showed higher activity in root zone systemic application than leaf zone systemic application. Residual effect was showed higher in acetamiprid+spinetoram SC (92%) than dinotefuran SG (44 %) at seven days after treatment. Control effect was showed all over 90 % activity at tree- and seven days after treatment. Therefore, these insecticides are expected to control the sweetpotato whitefly effectively.

• Youlee Joo(Dept of Plant Medicine, Chungbuk National University)
• Jeong-Oh Yang(Dept of Plant Medicine, Chungbuk National University)
• Gil-Hah Kim(Dept of Plant Medicine, Chungbuk National University)
• Dong-Ku Shin(KyungNong Central Research Institute)
• Choel Jang(KyungNong Central Research Institute)
• Eun-Choel Park(KyungNong Central Research Institute)
• In-Chon Hwang(KyungNong Central Research Institute)