Combined Efficacy of Moringa oleifera Leaves and a Fungus, Trichoderma harzianum Against Meloidogyne javanica on Eggplant.

The efficacy of Trichoderma harzianum and Moringa oleifera at various concentrations (S, S/2, S/4) and in combinations was tested on the reproduction, egg hatching and juvenile mortality of Meloidogyne javanica on eggplant. The evaluation was done in vitro as well as in vivo in green house. Both alone and combined application of T. harzianum and M. oleifera caused significant (P = 0.05) reduction in egg hatching and juvenile mortality at all time intervals (24, 48 and 72 h). Reproduction of M. javanica was evaluated on eggplant in green house. Most effective concentration from in vitro experiment was used in further protective and curative experiment. There were three treatments and five replications. The plant growth parameters including shoot length, shoot weight, root length, root weight and number of leaves and nematode parameters including number of galls, egg masses, number of females, number of juveniles per root system and no. of juveniles/100ml³ soil were recorded after 60 days of growth. Nematode population was significantly reduced when biocontrol agent was applied before the inoculation of nematodes as protective application. So, T. harzianum and M. oleifera might be successfully used in field conditions against M. javanica. [ABSTRACT FROM AUTHOR]