Nematode community populations in the rhizosphere of cultivated olive differs according to the plant genotype

► Olive cultivars support low values of the plant-parasitic nematode index indicating high disturbance of the field soil. ► Morphological and molecular (T-RFLP) analysis differentiated nematode communities from 16 olive cultivars. ► This study is the first evidence of an effect of the olive genotype on nematode community composition.