Abstract:
Water hyacinth, Eichhoniia crassipcs, a world known water -weed was until lately serious a problem in
Uganda and indeed the entire East African region. The weed caused serious socio-economic impact on the
livelihood of Ugandans. Attempts were macle to control the weed through an integrated approach including
two biological control weevils, Ncochetina bruchi and N. eichhorniae that were integrated in the control
effort. Five years after their introduction, the weevils successfully reduced the biomass of the weed to an
insignificant problem and life is back (o normal in and along the formerly heavily affected lakes, Victoria,
Albert and Kyoga. The significance of this operation is discussed