Author(s):

Midhun Babychan and Sobita Simon

Abstract: The antagonistic potential of eight Trichoderma isolates were evaluate the efficacy of the native isolates of Trichoderma species to inhibit the wilt and promote the growth parameters of tomato seedling and to manage the fusarium wilt disease as affected by Fusarium oxysporium f.sp. lycopersici. Under invitro condition the results revealed that Trichoderma isolate MiT-4 was found to be effectively inhibiting the radial mycelial growth of the pathogen by 58.4%. Under greenhouse condition application of Trichoderma isolates (MiT-1 and MiT-4) exhibit no wilt incidence in tomato seedlings. The germination of tomato seeds is greatly influenced by Trichoderma isolate (MiT-3) over Fusarium oxysporium f. sp lycopersici by 83.66%. Application of Trichoderma isolates (MiT-3) on tomato seeds, seedlings showed a significant stimulatory effect on shoot and root height by 7.53 cm and 7.1 cm respectively which is higher than the control.

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