The cultivation of ornamental and horticultural crops needs elevated water amount. Since the problem of water shortage and water quality becomes more and more important year-by-year, new solutions have to be introduced to rationalize water consumption avoiding water shortage periods and water quality worsening (e.g. increasing water salinisation).
The usual practice of irrigation for container crops does not take into account real plant water requirements, entrusting the control to simple systems like timers. The detection of soil water potential in pots is one of the possible techniques to adapt water supply to real plant exigencies, reducing water consumption, without negative effects on the plants.