Abstarct: The aim of this experiment was to study the effect of ultrasonic waves and pseudomonas bacteria effect on growth and yield of corn. The experimental design was factorial in the baxse on randomized complete blocks design with three replications. Treatments consisted of factorial arrangement of ultrasonic waves, in five levels zero exposure including (F1), 2 (F2), 4 (F3), 6 (F4) and 8 minutes (F5) in and three levels of pseudomonas inoculation, including control (B1), recommended a mount of inoculation (B2) and twice recommended inoculation (B3). Results showed that inoculation of pseudomonas bacteria increased stem diameter, plant height, ear weight and grain row number per ear as compared to controls. Ultrasonic waves increased plant height, ear weight, row number on ear, grain row number per ear, total grain weight, weight of 1000 grains and grain and biological yield. Also the interaction of pseudomonas bacteria and ultrasonic waves was significant for on stem diameter, grain row number per ear, weight of 1000 grains and grain yield were significant. It was concluded that 4 minutes exposure to ultrasonic waves can increase the growth and yield of corn.