FUMIGANT TOXIC ACTIVITY OF ESSENTIAL OILS

ON Sitophilus granarius (Linné)

A. Lamiri1, S. Lhaloui2,*, B. Benjilali 3, M. Berrada4

1Université Hassan I, Faculté des Sciences et Techniques, PoBox 577, Settat, Morocco

2 Institut National de La Recherche Agronomique, Centre Aridoculture, PoBox 589, Settat, Morocco

3Institut Agronomique et Veterinaire Hassan II, Rabat, PoBox 6202-Rabat-Instituts, 10101-Rabat, Morocco

4Université Hassan II, Faculté des Sciences Ben M’sik, PoBox 7955, Casablanca, Morocco

* Corresponding author. E-mail : Lhaloui@hotmail.com

Received 08 December 2000

Abstract

Granary weevil (Sitophilus granarius L.) is the most important and oldest known pest of stored products. To protect the grain wheat against this pest, nineteen essential oils extracted from aromatic and medicinal plants were tested for their insecticidal effect by determination of percentage of mortality after 24 and 48 hours of exposure. Several extracts were toxic to this pest, however the strongest activity was attributed to the essential oil of Mentha pulegium (100% of mortality) followed by Mentha viridis, Origanum compactum and Eucalyptus globulus.

Keywords: Sitophilus granarius; Wheat; Aromatic plants; Essential oils; Insecticidal effects.

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