Four concentrations of EtOAc extracts of the selected endophytes (0.1, 1, and 10 lg/lL) were tested for inhibitory activity against spore germination by the four ginseng pathogens (A. panax, B. cinerea, C. panacicola, C. destructans). Briefly, spore suspensions (105 spores/mL) of the pathogens were obtained from 7-day-old cultures in sterile distilled water. Three 50 lL aliquots of the spore suspensions were then spread on media containing 4.5 mL of extracts plus 4.5 mL of MIN 3% agar in 6 cm diameter plates. The plates were subsequently incubated at 25 C until spore germination in the control reached more than 80% (approximately 4–10 h). Next, lactophenol-cotton blue was added to the spore suspension to stop germination and 10 lL aliquots were placed on a hemocytometer to measure germination. The percentage of spore germination was then calculated based on approximately 100 spores counted in three replicates.