Fumigant and repellent potentials of essential oil from carrot (Daucus carota L.) seeds against Sitophilus zeamais Motschulsky

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Ruchuon Wanna
Mongkol Wongsawas
Darika Bunphan


The maize weevil, Sitophilus zeamais Motschulsky, is the most destructive insect pest of whole grains, both for breeder seed and preserved consumption. Fumigant toxicity and repellent effects of essential oil from Daucus carota seeds against adult S. zeamais were evaluated. All bioassays were vapor-phase tested. Results showed that essential oil from D. carota seeds had fumigation toxicity to adult S. zeamais at 24, 48 and 72 h with the median lethal concentration (LC50) values of 26.27, 19.60 and 13.27 µL/L air, respectively. Efficiency of 100% mortality of adult S. zeamais with 64 µL/L air after treatment at 72 h was significantly different (p < 0.01). Essential oil of D. carota seeds had no repellent effect on adult S. zeamais, with an attractive effect of less than 50% repellent efficiency. Essential oil from D. carota seeds was highly toxic to adult S. zeamais by fumigation and showed possible use as an alternative stored grain protection against insect pests.


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Wanna, R., Wongsawas, M., & Bunphan, D. (2022). Fumigant and repellent potentials of essential oil from carrot (Daucus carota L.) seeds against Sitophilus zeamais Motschulsky. Asia-Pacific Journal of Science and Technology, 27(05), APST–27. https://doi.org/10.14456/apst.2022.69
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