COMPARATIVE EFFICACY OF BIO-CONTROL ANTAGONISTICS AGAINST FUSARIUM OXYSPORUM F.SP. RADICIS-CUCUMERINUM INCITING ROOT AND STEM ROT DISEASE OF CUCUMBER (CUCUMIS SATIVUS L.) UNDER IN VITRO CONDITION

Present investigation was carried out at the laboratory of the Department of Plant Pathology, Rajasthan College of Agriculture, MPUAT, Udaipur to know the In-vitro efficacy of biocontrol agents for inhibiting the mycelial growth of Fusarium oxysporum f. sp.radicis-cucumerinum causing Root and stem rot of cucumber using dual culture technique with two fungal (Trichoderma viride and Trichoderma harzianum) and two bacterial (Bacillus subtilis and Pseudomonas fluorescense) antagonists were evaluated and found that minimum mycelial growth of pathogen i.e., 23.40 mm was found in Trichoderma viride with maximum per cent growth inhibition of 74.00% followed by Trichoderma harzianum with 29.30 mm mycelial growth and 67.44% growth inhibition.Further, Bacillus subtilis showed 43.10 mm mycelial growth with 52.11% growth inhibition of pathogen.Maximum mycelial growth of pathogen 50.04 mm was found in Pseudomonas fluorescens with minimum per cent growth inhibition 44.40%.