In vitro efficacy of non-systemic and systemic fungicides against Rhizoctonia solani kühn causing root rot of coriander

The efficacy of different non-systemic and systemic fungicides were tested under in vitro conditions against Rhizoctonia solani Kuhn causing root rot of coriander. All the fungicides tested were capable of inhibiting the mycelial growth of R. solani at various concentrations as compared to control. Mancozeb 75% WP among non-systemic fungicides exhibited the maximum mycelial growth inhibition of 99.98 per cent whereas, wettable sulphur 80% WP was the least effective fungicide with mean mycelial growth inhibition of 3.24 per cent. Benomyl 50% WP, carbendazim 50% WP and tebuconazole 25.9% EC among systemic fungicides gave maximum mycelial growth inhibition of 90.24, 83.83 and 81.70 per cent, respectively under laboratory conditions. Whereas, the least effective fungicide was thiophanate methyl 70% WP which was found at par with fosetyl-Al 80% WP with mean mycelial growth inhibition of 0.85 and 0.74 per cent, respectively.