초록

AI-Helper

가, 숯검은밤나방은 1회 발생으로 9월하순이 최성기였고 짐거세미나방 및 거세미나방은 년 $2\~3$회 발생으로 1화 6월중순, 2화기 8월중순, 3화기 9월하순에 최성기를 보였다. 나, 거세미나방류의 각태별 기간은 숯검은나방은 난기간 6.3일 유충기간 327.1, 용기간 25.1, 성충기간 6.5로 유충기간이 길었고 검거세미나방은 난기간 4.2일, 유충기간 29.6일, 용기간 17.5일, 성충기간 5.2일 이었고 거세미나방은 난기간 5.6일, 유충기간 38.2일, 용기간 27.3일, 성충기간 5.7일이었다. 다, 거세미나방류는 배추의 잎이 축 늘어진 잎 뒷면에 산란하였다. 라. 거세미나방 유충의 토중 잠토 시기는 3령이후였다. 마, 거세미나방류의 천적으로는 고치별 1종과 맵시벌 2종이 발견되었다. 바, 거세미나방류의 방제약제로는 모캡 및 보라톤이 효과적이었으나 보라톤은 작물체에 직접 닿으면 약해가 유발되므로 세심한 주의를 요한다.

Abstract ▼ AI-Helper

Experiments were conducted to study on bionomics and control of cutworms; Agrotis tokionis, A. ipsilon, A. fucosa in Suweon, 1978-1979. A. ipsilon and A. fucosa had two or three generations and A. tokionis had one generation a year. A large number of A. toikonis occured at the end of September, and ...

Experiments were conducted to study on bionomics and control of cutworms; Agrotis tokionis, A. ipsilon, A. fucosa in Suweon, 1978-1979. A. ipsilon and A. fucosa had two or three generations and A. tokionis had one generation a year. A large number of A. toikonis occured at the end of September, and the major peaks of the first generation of A. tokionis and A. fucosa were in mid-June, the second generation in mid-August, and the third generation was at the end of September. These cutworms laid many eggs on the lower surface of curved downward leaf of Chinese cabbage and the larvae later than 3rd instar began to cut the basal part of stem and then pulled into the soil. A parasite of A. tokionis, a braconid wasp, Meteorus rubens, and two unidentified Ichneumnid wasps were found. Mocap and Volaton gave effective control to the cutworms but Volaton should be applied not to contact with plant.