Mass breeding of Protaetia brevitarsis seluensis results in the entomopathogenic fungal infection, usually Metarhizium anisoplaie. A mixture of microorganisms (Bacillus subtilis, Lactobacillus plantarum, and Saccharomyces cerevisiae) delayed fungal infection by M. anisopliae, which infected fewer P. b. seluensis when the microorganism mixture was added to sawdust as feed for P. b. seluensis for 30d, their mortality rate was approximately 35% less than that of the control group, which was fed sawdust without the EM. In addition, the growth of M. anisopliae on agar media spread with each bacterium as inhibited by up to 80%.

• Kyu-Won Kwak(Industrial Insect Division, National Institute of Agricultural Sciences, RDA, Korea, Department of Bio-fibers and materials Science, Kyungpook National University, Korea)
• Heui-Sam Lee(Industrial Insect Division, National Institute of Agricultural Sciences, RDA, Korea)
• Kwanho Park(Industrial Insect Division, National Institute of Agricultural Sciences, RDA, Korea)
• Myung-Sae Han(Department of Bio-fibers and materials Science, Kyungpook National University, Korea)