Supplementing biocontrol efficacy of Bacillus velezensis against Glomerella cingulata

This research was initiated with the objective of supplementing the biocontrol activities of metabolites produced by Bacillus velezensis AR1 isolate via the addition of Neem oil (N), sulfur solution (SS) and mixture of N and SS (NS). The AR1 supernatant could inhibit the growth of Glomerella cingulata by 50% at 50% concentration rate. Application of the 50% supernatant concentration with NS500 and NS300 dilution rates have optimized the relative inhibition capacity of the supernatant by 64.3 and 63.5% respectively. The supernatant and its mixture with NS300 successfully suppressed lesion development on the peach fruits. Therefore, the use of AR1 and its co-application with the NS300 have promising potentials to control peach fruit diseases caused by G. cingulata.