Design of reservoir tanks modelling to mix several types of fertilizer for fertigation planting system: Part a

Abstract

Fertigation is a process that combines fertilization and irrigation by injecting soil amendments, fertilizers, and other water-soluble products into an irrigation system. . In order to achieve the higher productivity and maintaining environmental quality in agriculture, water and nutrients are the two most critical inputs. The importance of fertigation system is to control the salinity and pH value of fertilizer solution. In Malaysia, manual method was used in order to mix the fertilizer solution and manually take the reading of EC and pH of the solution. This research is to develop a fertigation system that can mix several types of fertilizer and to design a system that can mix the concentration and pH value of fertilizer using Arduino system and PID controller. Electrical conductivity and pH sensor is immersed in the main tank and starts to give feedback. When the controller detects an error, it will make correction to the system. In this research, several conditions of PID parameter were used to conduct the experiment.