In vitro efficacy of fungicides on mycelial growth and spore germination of Alternaria alternata and Mucor plumbeus

Tomato fruits were infected by various pathogens especially fungal pathogens under storage conditions as well as in field conditions. It was revealed that tomato fruits are attacked by Alternaria alternata causing Alternaria rot of tomato and Mucor plumbeus causing Mucor rot of tomato. Antifungal activity of some fungicides was undertaken during the present study. Different concentrations of fungicides brought about significant reduction in the mycelial growth and spore germination of Alternaria alternata and Mucor plumbeus under in vitro conditions. Hexaconozole proved highly effective in inhibiting the mycelial growth and spore germination of Alternaria alternata followed by carbendazim and copper oxychloride respectively. However, the most effective fungicide in inhibiting the mycelial growth and spore germination of Mucor plumbeus was hexaconozole followed by carbendazim and copper oxychloride respectively. Keywords: In vitro, fungicides, Alternaria alternata and Mucor plumbeus, mycelial growth, spore germination