The efficacy of organic soil amendments on the populations of Meloidogyne incognita on okra were investigated in two field trials. Organic wastes comprising fresh poultry mature, crowding, fruits peelings and sawdust were each ploughed 15cm into the soil at the rates of 0,4, 8 and 16th/ha, respectively, most significant suppressive effect on soil and root nematode populations. The populations observed in sawdust-amended soil was the lowest. An inverse relationship was observed between nematode populations and rates of each manure type and decomposition period. Similar trends of results were observed in the effects of manure type x manure type x decomposition period interactions on the tested parameters. However, 8 t/ha of poultry in manure (PM) with 6 weeks decomposition period (PM x 8t/ha x 6 wk) interaction recorded the most outstanding effect other interactions.
Keywords: organic soil amendments, Meloidogyne incognita, okra
Nigerian Journal of Horticultural Science Vol. 9 2005: 89-95