In vitro and in vivo Efficacy of Fungitoxicants against Charcoal Rot of Sesame Incited by Macrophomina phaseolina (Tassi) Goid

Different systemic, combination, and contact fungicides at different concentrations were evaluated against the charcoal rot of sesame pathogen, Macrophomina phaseolina under in vitro and in vivo conditions. Poison food technique was used to evaluate fungitoxicants under in vitro conditions in which complete inhibition (100%) was observed in combination with fungicides tebuconazole 50% + trifloxystrobin 25% at the lower concentration of 20 ppm and systemic fungicide tebuconazole 25EC at a concentration of 50 ppm. Two contact fungicides mancozeb (85.64 %) and chlorothalonil (57.35 %) give inhibition at 100 ppm concentration. The same set of fungicides was used under in vivo conditions as a foliar spray application, in which two combination fungicides tebuconazole 50% + trifloxystrobin 25%, azoxystrobin 18.2% + difenoconazole 11.4% and one systemic fungicide tebuconazole 25 EC showed lower disease severity on sesame (%).