Effectiveness of crushed fresh leaves of Boscia senegalensis Lam Ex. Poir. harvested in Dakar and Richard Toll on Sitophilus zeamais (Motschulsky)

The maize is one of the most produced worldwide cereals. Its conservation in stock is attacked by many pests that cause huge loss to the qualitative and quantitative level. Several alternative methods of control resulting in the insecticidal plants replace chemical pesticides. Among these methods, fumi-gation has proved very effective on insects’ food stored. In the present work, fumigating insects of Sitophilus zeamais to different doses of fresh crushed leaves of Boscia senegalensis showed strong insecticidal activity of this plant depending on the locality. Leaves of two localities, Dakar and Richard Toll have been tested. Statistical analysis of the mortality rate expressed in cu-mulative frequencies showed a significant difference (p