Insecticidal effect of carbon dioxide(CO2) was carried out for the environment-friendly control of insect in vegetable plug seedling greenhouse. Korean melon, pepper, tomato and strawberry were tested. Insects were performed on Myzus persicae, Tetranychus urticae, Bemisia tabaci. Plants and insect were placed in closed container and the 4 concentration(0%, 25%, 50%, 100%) injected into container and investigated plant damage and the insecticidal effect over time. Damage of korean melon was appeared in the all concentration. Pepper was not injured until the 3 hours at 50% concentration and tomato also was not injured until the 6 hours at all concentration. Strawberry was not injured all concentration. The 100% mortality of Myzus persicae was appeared over 3 hours-100%, 12 hours-50% and 24 hours-25%, Tetranychus urticae was appeared over 3 hour-100%, 12 hours-50% and 24 hours-25% and Bemisia tabaci was appeared over 6 hours-100% and 12 hour-50%.

• Minki Kim(Gyeongbuk agricultural research and extension service)
• Seokhee Park(Gyeongbuk agricultural research and extension service)
• Seunghan Kim(Gyeongbuk agricultural research and extension service)
• Sukhee Lee(Gyeongbuk agricultural research and extension service)
• Taeyoung Kwon(Gyeongbuk agricultural research and extension service)