Abstract
The life-cycle of the aphid-parasite, Aphidius gifuensis, took 11.9 days at $25^{\circ}C$ and 12.1 days at $30^{\circ}C$. The female appearance rate of A. gifuensis was the best at $20{\sim}25^{\circ}C$ compared to the other temperatures. Optimum rearing temperature of Aphidius gifuensis was $20{\sim}25^{\circ}C$ Optimum temperatures for A. gifuensis emergence were $20^{\circ}C$ and $25^{\circ}C$ with 99.1% and 98.2%, respectively. However the emergence rate of Aphidius gifuensis was 58.8% at $10^{\circ}C$. There was a positive correlation between A. gifuensis adult activity and temperature, but there was a negative correlation between developmental period of Myzus persicae nymph and temperature. Among the pests occurring in pepper greenhouse, dominant species was M. persicae and its density was 6~1,024 per plant. The damaged fruit rate by Helicoverpa assulta was 3.3~53.3%. The number of aphid and mummy in the A. gifuensis released plot were 173.5 and 10 in June, 1.8 and 17 in July, 2000, respectively. The numbers of Aphidius gifuensis were 7.5 and 0.4 in May, 27.1 and 2.1 in June, 2001, respectively. The suppressive effects on M. persicae in A. gifuensis released plot was better than the control plot, but there was no significant difference compared to the pesticide-sprayed plot. The first leaf length and the stem width in the A. gifuensis released plot, the control plot, and the pesticide-sprayed plot were not significantly different, but the A. gifuensis released plot showed the highest yield among the plots.
싸리진디벌 발육은 $25^{\circ}C$와 $30^{\circ}C$에서 각각 평균일수 11.9일과 12.1일로 가장 우수하였다. 그리고 싸리진디벌 성비는 암컷의 발생비율이 높은 $20{\sim}25^{\circ}C$가 가장 사육에 용이한 것으로 나타났으며 우화는 $10^{\circ}C$에서 58.8%, $15^{\circ}C$에서 88.1%, $20^{\circ}C$에서 99.1%, $25^{\circ}C$에서 98.2%로서 우화에 가장 적당한 온도는 $20{\sim}25^{\circ}C$였다. 싸리진디벌 성충의 활동력은 온도와 양의 상관관계를, 복숭아혹진딧물 무시약충의 발육기간은 온도와 음의 상관관계를 나타내었다. 시설내 고추에 발생하는 해충을 조사한 결과, 복숭아혹진딧물이 6.1~1024.4마리로서 가장 많은 발생밀도를 보였으며, 담배나방은 3.3~53.3%의 피해과율을 나타내었다. 싸리진디벌 방사구는 2000년 6월과 7월에 각각 진딧물 173.5마리, 1.8마리, 머미 10개, 17개, 2001년 5월과 6월에 진딧물 7.5마리, 27.1마리, 머미 0.4개, 2.1개로서 무처리구보다는 우수한 방제 효과를 나타내었으며, 농약처리구와는 방제 효과에서 차이가 없었다.
(Horticultural Environment Division of National Horticultural Research Institute, RDA)