
Aeroponic hydro-atomized water/nutrient spray, 1996
The key to root development in an aeroponic environment is the size of the water droplet. In commercial applications, a hydro-atomizing spray is employed to cover large areas of roots utilizing air pressure misting.
A variation of the mist technique employs the use of ultrasonic nebulizers or foggers to mist nutrient solutions in low-pressure aeroponic devices.
Water droplet size is crucial for sustaining aeroponic growth. Too large of a water droplet means less oxygen is available to the root system. Too fine of a water droplet such as those generated by the ultra-sonic mister produce excessive root hair without developing a lateral root system for sustained growth in an aeroponic system.