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
2Institut 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
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.