In-vitro efficacy of different fungicides against black mould of onion caused by Aspergillus niger (Van Tiegh)

Abstract

Black mould disease caused by Aspergillus Niger Van Tieghem (An) is a limiting factor in onion (Allium cepa L.) production worldwide. Nine fungicides were evaluated in-vitro against Aspergillus Niger. All the test fungicides at 1000 and 1500 ppm were found effective against the test pathogen and were significantly superior over untreated control. The pathogen was found most sensitive to Carbendazim and Thiram (100% inhibition) followed by Benomyl (99.43% inhibition), Carbendazim (12%) + Mancozeb (63%) (98.99% inhibition) and Mancozeb (96.30% inhibition) among the seven fungicides evaluated in-vitro at different concentrations.