Evaluation of antifungal activity of Moringa oleifera and Jatropha curcas extracts as a natural fungicide against adults of Acanthoscelides Obtectus

Karl Tshimenga, Alfred Mukuna, Junias Kabele, Jean-Noël Mputu

In the optics to fight against the weevil Acanthoscelides obtectus, the devastating main thing of the bean (Phaseolus vulgaris L.) stored in Kivu and to reduce the exhibition of the organisms not targeted to dangerous insecticides, alternative methods are required. At this point of view, studie on the effect of Saponins and Steroids extracted from the sheets of Moringa oleifera and from Jatropha curcas was led to compare the efficiency of the extracts of these two plants in comparison with an organophosphate commercial insecticide (Malathion) used as witness positive on weevil. The extracts Saponines of, the Moringa caused a maximal mortality of the order of 86,1±1,1 % to a dose 1,5 g/ml followed Steroids extracts of Jatropha with a 69,0±1,7 % mortality rate, whereas the Malathion showed itself more successful by eliminating insects at 92,9±1,9 % and at a dose of 0,4 g/ml after 72 hours of exhibition.