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Five fungal antagonists were evaluated in vitro against Fusarium oxysporum, applying Dual Culture Technique (Dennis and Webster, 1971) and using PDA as basal medium all the bioagents evaluated exhibited fungistatic/fungitoxic activity against F. oxysporum and significantly inhibited mycelial growth of the test pathogen over untreated control. Of the seven antagonists tested, Trichoderma viride was found most effective and recorded least linear mycelial growth (22.00 mm) with highest mycelial growth inhibition (75.66%) of the test pathogen as compared to untreated control (90.33 mm and 00.00%). Among the different bioagents tested the maximum of 75.66 per cent inhibition was found in Trichoderma viride, followed by Trichoderma harzianum and Trichoderma koningii, and the least inhibition was recorded with the Bacterial bioagents Bacillus subtilis with 43.18 per cent.

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