STUDY OF THE INSECTICIDAL ACTIVITY OF BACCATA OF THE IFRANE VALLEY ON SITOPHILUS ORYZAE (L.) (COLEOPTERA: CURCULIONIDAE).

The aim of this work is to propose a new alternative method based on plants to fight against synthetic insecticides. The powder and the ethanolic extract, prepared from the leaves of Taxus baccata of Ifrane Val, were tested on Sitophilus oryzae (L.) with different concentrations and for various durations of exposure. On the first hand, the toxicity of the prepared powder and ethanolic extract increases with the concentration. On the second hand, it is noted that this toxicity increases with the duration of exposure of Sitophilus oryzae (L.). Given these results, the powder and ethanolic extract of the leaves of Taxus baccata can be recommended as a bioinsectide candidate against Sitophilus oryzae (L.) and as an alternative to synthetic agriculture pesticides. [ABSTRACT FROM AUTHOR]