Multisensor device based on Case-Based Reasoning (CBR) for monitoring nutrient solutions in fertigation

A simplified four-electrode multisensor prototype incorporating a homemade sensor based on chitosan-clay nanocomposite, and making use of Case-Based Reasoning (CBR) as pattern recognition technique, is effective for discerning among complex solutions of similar composition. The long-term stability of the sensors array together with the possibility of applying drift and weight corrections to the CBR database increase the efficiency of the CBR-based system, enhancing its ability to detect variations in the composition of fertigation solutions used in greenhouse crops.