The biggest faunistic similitudes between nematodes segregated from spots of development of coniferous and deciduous plants were recorded in soils of loamy sand and sandy topsoil. The most plentiful nematode species and the best similitude in types of plant parasitic nematodes were seen in soils with impartial pH or somewhat acidic. Aphelenchus avenae was found in soil tests gathered from both coniferous and deciduous plants, with no connection to soil corrosiveness.