ABSTRACT
Root-knot nematodes are one of the major limiting factors affecting plant growth and yield. Currently, synthetic pesticides are principle means used in integrated management to the nematodes due to its impact on reduction of environmental pollution and preserve the natural equilibrium of the components of the ecosystem In this framework has been defined many plant species that have significantly effect on nematodes In this work in vitro a potential of aqueous extracts from Neem (Azadirachta indica), Jatropha (Jatropha curcas), Henna (Lawsonia inermis) and Fresh peel of sweet orange (Citrus sinensis) was determine in limiting the hatch of the root-knot nematode, Meloidogyne javanica eggs with four concentrations of aqueous extracts (25, 50, 75 and 100%) in three time of applied. All the extracts reduced the hatching of eggs whereas the most reduction occurred in A. indica, followed by J. gossypifolia as very good inhibitors of egg hatch of M. javanica then L. inermis and C. sinensis.