Efficacy of Essential Oils to Control the Carob Moth, Ectomyelois Ceratoniae Zeller (Lepidoptera: Pyralidae)
Journal Title: International Journal of Agriculture Innovations and Research - Year 2018, Vol 6, Issue 5
Abstract
Measures of stored pest control are mainly based on application of synthetic insecticides and fumigants. Recently, natural pest control methods including essential oils have been increasingly explored. In this work, the fumigant activity of essential oil vapours distilled from Citrus sinensis and Artemisia herba-alba were tested against adults, larvae and eggs of the carob moth Ectomyelois ceratoniae. Results showed that fumigant toxicity depends on oil species, concentrations and exposure time. Aged larvae L5 were more susceptible than young larvae (L4 and L3). Mortality rate of Larvae (L5) reached 100% and 64% respectively for Artemisia herba-alba and Citrus sinensis at the concentration of 150μl/l air after 24 hours exposure. The corresponding LC50 for adults values were respectively 2.6 and 0.31 μl/l air for Citrus sinensis andherba-alba. The hatching rate decreased with increases in concentration or exposure time for the two oils. The exposure to vapours of essential oils from Artemisia herba-alba caused 0% of hatching rate at the concentration of 150 μl/l air after 48 hours exposure. With the same concentration and time exposure, hatching rate was 6, 2 % when eggs were exposed to Citrus sinensis oil. Results suggested that the two oils mainly Artemisia herba-alba essential oils could be used as an alternative to the synthetic fumigant in postharvest treatment program for the control of E. ceratoniae
Authors and Affiliations
Samah BEN CHAABAN, et al.
Keywords
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