복숭아혹진딧물의 생활사를 야외에서 조사한 결과 1. 월동란은 3월하순-4월 상순에 부화하며, 부화율은 였다. 2. 5월상, 중순에 겨울숙주로 이동하여 11월 상, 중순 사이에 월동란을 낳았다. 3. 1년간 빠른 개체군은 23세대, 늦은 개체군은 9세대를 영위하였다. 4. 성숙기간은 약 10.8일, 생식기간은 약 15.8일, 수명은 28.5일이었으며 모두 봄, 가을에는 그 기간이고 여름에는 짧은 경향을 나타내었다. 5. 암컷 한 마리당 총산자수는 약 50마리, 최다산자수는 118마리 이었으며, 1일 평균산자수는 3.2마리 이었으며 1일 최다산자수는 13마리었다.

In the growth of the Rubus coreanus Miquel fruits, the unripened (10 days) and ripened (25 days) fruits after flowering were harvested. The chemical characteristics of different maturational stages of the unripened and ripened fruits were investigated. Total amount of phenolic compounds was 4.00-7.56% in the unripened fruits and 3.78-5.57% in the ripened fruits, respectively. Furthermore, total amounts of organic acids such as malic, citric, succinic, and oxalic acids were 16.40 mg/ 100 g in the unripened fruits and 28.82 mg/100 g in the ripened fruits, respectively. In organic acids of the unripened and the ripened fruits, citric acid (8.76-15.47 mg/100 g) was the highest amount among other organic acids. Soluble sugars were significantly increased from 11.07 to 21.54% in the unripened and ripened fruits. Therefore, ripened fruits had the high levels of phenolic compounds, organic acids and soluble sugars. For the biological studies of R. coreanus, methanol extracts of R. coreanus leaves, fruits, and stems were evaluated for their insecticidal activities against Myzus persicae (Hemiptera: Aphididae), Plutella xylostella (Lepioptera: Plutellidae) and Spodoptera litura (Lepioptera: Noctuidae) by leaf dipping method. From these results, the extract of R. coreanus leaves revealed potent insecticidal activity against P. xylostella. However, the methanol extracts of R. coreanus fruits and stems had no any insecticidal activity against M. persicae, P. xylostella and S. litura. The R. coreanus leaves have promising potential as new insecticidal agent against P. xylostella.