Effect of a previous resistant cultivar and Pasteuria penetrans on population densities of Meloidogyne javanica in greenhouse grown tomatoes in Crete, Greece

agallas auxiliaire de lutte biologique biological control biological control organisms chemical control control de plagas cultivos de invernadero dynamique des populations galle grecia greece greenhouse crops lutte antiravageur lutte biologique lutte chimique lycopersicon esculentum meloidogyne javanica nematicides nematocidas nematocide nematodos de las plantas oxamilo oxamyl pest control plant galls plant nematodes plante de serre population dynamics racine roots soil treatment tomate tomatoes traitement du sol tratamiento del suelo