Olajide, M.C.Izuogu, N.B.Baba, Halimat S.Sodiq, A.R.2021-10-122021-10-122016https://uilspace.unilorin.edu.ng/handle/20.500.12484/6611Screenhouse and field experiment were conducted to assess the efficacy of aqueous extracts of Moringa oleifera leaves and seed on te root-knot nematode, Meloidogyne incognita infecting cucumber. The experiment were designed as a factorial in the screenhouse and on the field. In each case, two concentrations of each of the tested plant materials (100% and 50% concentration) were evaluated. the effects of treatment on vegetative growth, weight of fruits as well as nematodes population were determined after analysis using ANOVA and the Duncan's New Multiple Range Test. Plant growth was best at 100% of the aqueous extract of Moringa leaves. All the treated plants were less galled and had reduced nematode population compared with the control. in the screenhouse and field, 100% and 50% aqueous extracts of M. oleifera leaves were more effective in controlling the nematodes than the seed extracts. Chemical analysis revealed the presence of flavonoids, alkaloids, saponin tannins as the active chemical components in the test plant. these components are toxic to micro-organisms including nematodes. the results suggests that both the aqueous extract of M.oleifera leaves and seeds can b used to control the menace of Meloidogyne incognita in cucumber in nematode-endemin fieldsenAqueous extractCucumberGrowthMeloidogyne incognitaMoringa oleiferaArticle