Genera of Plant parasitic Nematode Found in Uncultivated Soils, Mainly of Natural Grasslands in Japan

Abstract

Mainly in May to September of 1966, 120 samples of uncultivated soils were collected from natural grasslands and some woody areas including native pastures which spread over 50 locations throughout Japan. Known and suspected plant-parasitic nematode genera isolated from soils mentioned above are as follows : Meloidogyne, Pratylenchus, Heterodera, Helicotylenchus, Paratylenchus, Holotylus, Tylenchus, Criconema, Criconemoides, Hemicriconemoides, Aphelenchus, Trichodorus and Xiphinema. Of the genera, Paratylenchus most prevailed in these habitats, and Helicotylenchus and Pratylenchus were found frequently. Meloidogyne occurred in uncultivated soils in various places of Japan.