For the certification resistance ability of JSD-1 against plant dis-
eases, series of standoff plates were performed. A plate was inoculated with two different microorganisms simultaneously; one was JSD-1 and the other one was a certain disease microorganism. After 5 days of incubation at 30°C, the inhibition zone was observed between two inoculums to estimate the resistance of JSD-1 to the microorganisms.