First report of the root-knot nematode (Meloidogyne graminicola) in Madagascar rice fields

Rice is the major crop produced in Madagascar and is infested by numerous plant-parasitic nematodes. An extensive list of plant-parasitic nematodes found in association with rice roots during a survey of 14 sites is presented. This is the first time that Meloidogyne graminicola has been detected in Madagascar, which is relevant information for future management of this economically important nematode pest of rice.