In vitro assessment of Trichoderma asperellum interaction with combination fungicides
DOI:
https://doi.org/10.25081/jsa.2026.v10.9810Keywords:
Trichoderma asperellum, Biological control, Compatibility, Fungicides, Integrated disease managementAbstract
This study was carried out to assess how well Trichoderma asperellum, a widely used biological control agent, performs in the presence of selected combination group fungicides. The experiment took place during 2024-2025 at the Department of Plant Pathology, Dr. Sharadchandra Pawar College of Agriculture, Baramati, using a Completely Randomized Design (CRD). Seven combination fungicides— Ridomil Gold (Metalaxyl M 4% + Mancozeb 64% WP), Folio Gold (Metalaxyl M 33% + Chlorothalonil 33.1% SC), Indofil Sprint (Carbendazim 25% + Mancozeb 50% WS), Amistar Top (Azoxystrobin 18.2% + Difenoconazole 11.4% w/w SC), Syngenta Gloit (Propiconazole 13.9% + Difenoconazole 13.9% EC), Dhanuka Lustre (Carbendazim 25% + Flusilazole 12.5% SE), Bayer Nativo (Tebuconazole 50% +Trifloxystrobin 25% WG) were tested at both full and half of their recommended doses using the poison food technique. Results showed that Metalaxyl M 4% + Mancozeb 64% WP was highly compatible with 22.22 per cent growth inhibition at half concentration and moderate compatibility with 53.70 per cent growth inhibition at recommended concentration with T. asperellum, while the remaining fungicides significantly suppressed the growth of the biocontrol agent with 83.52 to 94.44 per cent growth inhibition. These findings highlight the potential for combining T. asperellum with compatible fungicides like Metalaxyl M 4% + Mancozeb 64% WP in integrated disease management programs, while suggesting caution or avoidance for those with inhibitory effects.
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Copyright (c) 2026 Tejashri T. Khore, Chandrashekhar V. Shende, Shital S. Dhawan
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