Asian Research Journal of Agriculture

Chilli wilt disease, caused by Fusarium oxysporum f. sp. capsici, significantly threatens chili cultivation, impacting yield and quality. This study aimed to evaluate the fungi-toxic effects of various fungicides against Fusarium oxysporum f. sp. capsici under in vitro conditions. Eight different fungicides viz., Tebuconazole 6.7 % + Captan 26.9 % w/w SC, Thiophenate Methyl 70% WP, Carbendazim 12% + Mancozeb 63% WP, Tebuconazole 50% + Trifloxystrobin 25% WG, Carbendazim 50% WP, Pyraclostrobin 20% WG, Chlorothalonil 75% WP and Azoxystrobin 18.2%+ Difenoconazole 11.4% SC were tested at a concentration of 500 ppm and 1000 ppm using the Poison food technique. The experiment was designed using a Completely Randomized Design (CRD) and conducted at the Department of Plant Pathology, Dr. Sharadchandra Pawar College of Agriculture, Baramati, during the academic year 2023-24. All fungicides significantly (P < 0.01) inhibited the mycelial growth of Fusarium oxysporum f.sp. capsici, with Carbendazim 12% + Mancozeb 63% WP showing the highest efficacy, followed by Tebuconazole 50% + Trifloxystrobin 25% WG and Tebuconazole 6.7 % + Captan 26.9 % w/w SC across both concentrations. This study suggests that the inhibition of pathogen growth increased with higher fungicide concentrations.