anti-insect potential of pinus eldarica leaf essential oil against blattella germanica: german cockroach

Background: pinus eldarica contains various components such as phenolic and terpene materials. previous reports showed these two components had anti-insect properties. pest control, especially for di erent species of cockroaches, is important because of transmission of various diseases.objectives: the aim of this study was to determine the anti-insect potential of p. eldarica leaf essential oil (ple) against blattella germanica, german cockroach.methods: the anti-insect activity of di erent doses (50, 150, and 300 µg/ml) of ple of two areas of clean air (ca) zones and polluted air (pa) zones was evaluated by contact toxicity, fumigant toxicity, and repellence tests.results: the results of contact test showed that the percentages of mortality rates were increased significantly in a dose- and time-dependent manner in both contact and fumigation methods as well as repellency percentage. also, the results related to pa zones were more significant than ca zones.conclusions: this study showed that essential leaf oil of p. eldarica induced mortality and repellency in german cockroach, and it can probably be used as a good candidate for pest control, in particular cockroaches.