Reaction of locally isolated bio-agents on hatching and mortality of root-knot nematode, Meloidogyne incognita

Investigations were carried out in vitro to evaluate the antagonistic effect of fungal bio-control agents (local isolates) i.e., Trichoderma viride and Trichoderma asperellum on hatching and larval mortality of root-knot nematode, Meloidogyne incognita. Bio-control agents were tested at 106, 107 and 108 dilutions on hatching and juvenile mortality of M. incognita after 24, 48, 72 and 96 hrs exposure period as compared to control. T. viride and T. asperellum were found at par and significantly effective on hatching inhibition and larval mortality of M. incognita. Among different dilutions, T. viride at 106 dilutions gave maximum hatching inhibition and larval mortality followed by T. asperellum at 106 dilutions and T. viride at 107 dilutions after 96 hrs. T. asperellum at 108 dilutions was found least effective at different period of exposure.