Evaluation of systemic fungicides for growth inhibition of Macrophomina phaseolina (Tassi) Goid. causing root rot of okra

Okra (Abelmoschus esculentus L. Moench) is the only vegetable crop of significance in the Malvaceae family and is very popular in the Indo-Pak subcontinent. In India, it ranks first in its consumption. The crop was found to suffer from stem and root rot disease in severe form in many regions of Gujarat state during Kharif 2021. So, for its management seven systemic fungicides were evaluated at three concentrations (100, 250 and 500 ppm) under in vitro condition. The fungicides tested included: T1) Azoxystrobin 23% SC, T2) Carbendazim 50% WP, T3) Fluxapyroxad 333 g/L FS, T4) Fosetyl-Al 80% WP, T5) Propiconazole 25% SC, T6) Hexaconazole 5% EC and T7) Thiophanate methyl 70% WP. The results revealed that Hexaconazole 5% EC gave 98.30, 100 and 100% inhibition at 100, 250 and 500 ppm, respectively. The next best fungicide was propiconazol 25% SC which gave 98.30, 98.83 and 100% inhibition of mycelial growth of the fungus at 100, 250 and 500 ppm, respectively.