Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Evaluation of Pheromone Lure of Grapholita molesta (Lpidoptera: Torticidae) and Forecasting Its Phenological Events in Suwon

복숭아순나방 성페로몬 미끼 평가 및 수원지역에서 주요 발생시기 예찰

  • Kim Dong Soon (Faculty of Bioscience and Industry, College of Applied Life Science, Cheju Natl. Univ.) ;
  • Boo Kyung Saeng (School of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul Natl. Univ.) ;
  • Jeon Heung Yong (Horticultural Environment Division, National Horticultural Research Institute, RDA.)
  • Published : 2004.12.01
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Abstract

The sex pheromone blend (28-12AC : E8-12AC : Z8-12OH = 95 : 5 : 1) of oriental fruit moth, Grapholita molesta (Busck), was evaluated with reference to its male attractivity at different dosage and lure longevity of 1.0 mg in a field condition. Also, degree-days (DD) were calculated up to major phenological events of G. molesta using seasonal adult flights monitored by pheromone traps and egg population densities in early season in Suwon peach orchards. In the range of 0.1-4.0 mg dosage examined, G. molesta males caught in pheromone trap decreased with increasing total pheromone doses. The highest number of G. molesta males were attracted in traps baited with 0.1 mg-lure, and there were no significantly differences among 0.5 to 4.0 mg-lure. In longevity test with a 1.0 mg-lure, there was no difference in mean numbers of G. molesta males caught between traps with fresh-baited lures every 20d and field-lasted lures up to ${\approx}50d$ after trap installation, but thereafter more G. molesta males were attracted in the field-lasted lures than in the fresh-baited lures. Accumulated degree-days (DD) from January 1 to the first adult emergence (biofix) were 39DD at a lower threshold temperature $8.1^{\circ}C$. Degree-days from the biofix up to the 1st adult peak through 4th peak were 98DD, 620DD, 1233DD, and 1916DD, respectively. Required degree-days from the 1st adult peak to the 1st egg peak were 130DD, while the 2nd egg peak timing was simultaneous with the 2nd adult peak. Further, management strategies of G. molesta were discussed in peach orchards.

복숭아순나방 성페로몬(Z8-12AC : E8-12AC : Z8-12OH = 95 : 5 : 1) 처리량에 따른 수컷 성충 유인수 및 페로몬 총량 1.0mg-미끼의 유인력 지속기간을 포장조건에서 평가하였다. 또한 수원지역 복숭아과원에서 연간 복숭아순나방 페로몬 유살량 및 계절초기 알 발생밀도 등 기초 생태자료를 이용하여 주요 발생시기별 적산온도를 산출하였다. 복숭아순나방은 실험을 실시한 페로몬 처리량 0.1-4.0mg 범위에서 처리량이 증가할수록 유인수가 감소하였다. 0.1 mg-미끼에 가장 많은 수컷성충이 유인되었고, 0.5-4.0mg 범위에서는 통계적으로 유인수의 차이가 없었다. 1.0mg-미끼를 이용하여 20일 간격으로 미끼를 교체한 트랩과 교체하지 않은 트랩 간 수컷 유인수를 조사한 결과 약 50일까지 서로 차이가 없었으나, 그 후에는 미끼를 교체하지 않은 트랩에 더 많은 수컷 성충이 유인되는 경향을 보였다. 복숭아순나방 초발생일까지 적산온도는 1월 1일부터 $8.1^{\circ}C$ 이상 평균 대기온도를 누적했을 때 약 39DD 이었다. 또한 초발일 기준 각 발생최성기까지 누적된 적산온도는 1세대 98 DD, 2세대 620DD, 3세대 1233DD, 4세대 1916DD 이었다. 1세대 성충 발생최성기에서 알 밀도 최성기까지는 약 130DD 차이가 있었고, 2세대 성충 발생최성기와 알 발생최성기는 비슷한 시기에 나타났다. 기타 복숭아과원에서 복숭아순나방 방제 전략에 대하여 고찰하였다.

Keywords

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