The application of aeroponic system for propagation of Dendrobium nobile Lindl. in the
nursery phase has opened a new way for the development of the model in culturing this species in the northern provinces. The results showed that Dendrobium nobile Lindl. grown in the aeroponic system. had the maximum adaptability, attaining survival rate of 100 percent after one month of planting in the spring, spring-summer and summer seasons. The aeroponic system can be applied for propagation in all cropping seasons around the year, while the hydroponic system or planting on the substrate cannot be done in the summer period. The plants grow better in the aeroponic nutrient solution III (improved from Knoop solution) with pH = 6.0 - 6.5
EC = 400 - 500 us/cm
the spraying time of 2 minutes in 4 hours interval.