In vitro evaluation of different bioagents against F. oxysporum f. sp. lycopersici causing wilt in tomato

Abstract

Tomato (Lycopersicon esculentum Miller) crop suffers from several diseases, among which wilting caused by F. oxysporum f. sp. lycopersici is one of the serious diseases observed regularly in tomato growing areas. Therefore, efforts were made to evaluate bio efficacy of the different bioagents in vitro condition against F. oxysporum f. sp. lycopersici. Among five fungal and two bacterial bio-agents tested in vitro, exhibited significant inhibition of mycelial growth of F. oxysporum f. sp. lycopersici. However, Trichoderma koningii recorded significantly highest inhibition of mycelial growth (92.22%) followed by T. longibrachiatum (90%), T. harzianum (87.60%), T. asperellum (67.22%), T. hamatum (60.93%), Bacillus subtilis (53.52%) and Pseudomonas flurorescens (42.41%) over control.