Riptortus pedestris (F.) (Hemiptera: Alydidae) is one of major pests of fruit trees and cause economic injury by piercing and sucking fruits. Although growers usually depend on synthetic insecticides to control this pest, demand for using environment-friendly insecticide is increasing. As, in our previous studies, extracts of Nicotiana tabacum L. and Allium sativum L. was effective against Grapholita molesta (Busck), we evaluated them also on the different life stages (< 24 h) of R. pedestris at 2 mg/ml in laboratory by glass scintillation vial assay. The toxicity of N. tabacum, A. sativum, and their mixture to second instar nymph was not different compared to methanol control. But, N. tabacum was more toxic to fourth instar nymph with LT50 of 59.0 h. In adult stage, the toxicity of both N. tabacum and A. sativum was higher compared to the mixture and methanol control. Thus, N. tabacum could be potential botanical insecticide against R. pedestris.

식물성 천연항균제인 자몽종자추출제재(Boatanical antimicrohiagent-grapefruit seed extract mixture : BAAG)의 항균특성을 구명하고, 과채류의 선도유지제로서의 기능과 효능을 입증하기 위하여 BAAG를 조제하여 과채류의 저장, 유통중 발생하는 변패균주, Fuarium solani, Botrytis cinerea Pencilliumcrutosua Ewinia carotovora Phoma destruct