Screening of fungicide to control Ciboria carunculoides under laboratory conditions.

Ciboria carunculoides is one of the major fungal pathogen that attack mulberry grown worldwide as a crop for silkworm rearing. The use of chemical fungicides is one of the main tactics being used for the management of plant diseases. The effect of 15 fungicides on radial growth of C. carunculoides was studied in order to screen out fungicides which are highly effective against this fungus. Carbendazim was proved to the most aggressive showing the lowest EC50 value (8.04 mg/l), and glyphosate was the least virulent with a mean EC50 value of 8741.78 mg/l. The mixtures of fungicides at different concentration with mulberry juice were tested for C. carunculoides growth inhibition, and the results showed that Carbendazim + juice mixture was most aggressive having the lowest EC50 value (521.01 mg/l), when compared with Procymidone + juice mixture. The percent conidial germination of C. carunculoides was significantly affected by different concentration of Carbendazim and Glyphosate used at different concentrations in soil. Both the fungicides used in this study caused 100% inhibition of fungal germination at the concentration of 40 and 80 mg/l, respectively. Our study has helped to screen some highly effective fungicides for C. carunculoides management.