ABSTRACT
Plants with nematicidal properties can effectively reduce soil populations of nematodes and improve yields when grown with susceptible crops or as a cover crop (Bridge 1987). Despite the wide host ranges of the root-knot nematode Meloidogyne javanica Kofoid and White 1919, it can sometimes be controlled by a suitable cover crop or with crop rotation. Crops that include sesame, Crotalaria juncea L., Dolichas lablab L., or Elymus glaucus Buckl. reduce root-knot nematode numbers in the soil (Araya and Caswell-Chen 1994a; 1994b). Cover crops, both annual and biennial, also manage nematodes. However, little information is available about their effects on M. javanica and the mode of action by which they reduce Meloidogyne spp. Sesame has been successful in management of Meloidogyne arenaria, M. incognita, and M. javanica (McSorley et al. 1994, McSorley and Dickson 1995; Sipes and Arakaki 1997; Tanda and Atwal 1988).
