Many, microorganisms playing an important role in plant growth are used in agriculture system, especially that group of microorganisms called plant growth promoting rhizobacteria (PGPR), which can increase the growth of plant directly and indirectly; acting as biofertilizers, phytostimulators and biocontrol agent. | The effect of plant growth promoting rhizobacteria PGPR on biochemical parameters of coriander Coriandrum sativum L. seedling