Abstract
Mungbean plants infested with the root-knot nematode, Meloidogyne javanica, became severely damaged and were even frequently killed. These plants under the heavy infestation of M. javanica displayed a marked reduction of yield. Antagonistic plants such as marigolds reduced the nematode population as effectively as non-host plants such as guinea grass or maize when introduced into the mungbean based-cropping system, though the latter plant was found to be more suitable as rotation crops. Mungbean varieties highly resistant to M. javanica have not been found hitherto, but one strain, UT 8104-B-3 seemed to be moderately resistant to the nematode, since a smaller number of root-knots were observed on its roots. Jpn. J. Nematol. 21: 6-10 (1991).
