Strep – PR87 is an outstanding multi-faceted gram-positive bacteria known as streptomycin. (Streptomyces sp.) Isolate PR 87, isolated from soil samples and selected by Assoc. Prof. Dr. Petcharat Thammabenjapol, Department of Entomology and Plant Pathology. Faculty of Agriculture Khon Kaen University since 2001 and research continues until now. With the goal of selecting Is the best antagonist bacteria It has a versatility, such as fast growth and the ability to produce antibiotics, inhibiting both fungi and bacteria that cause disease, important crops in economic crops, such as cucumbers, peppers, tomatoes and rice. From root knot nematode And stimulate the immune system against plant viruses There are mechanisms that stimulate plant growth as well.