Automatic Nutrient Solution Control System for Planting Hydroponics Vegetables with Internet of Things (IoT)

Abstract

The purpose of this study was aimed to reduce workload and production costs on vegetable production. It can be easily used for farmers by creating a web application with the Arduino UNO R3 device for measuring temperature, water level, Potential of Hydrogen ion (pH), and Electrical Conductivity (EC). The measured value is recorded in a relational database system through a web server with internet technology as Internet of Things (IoT). The system automatically adjusts the environment suitable for hydroponics vegetables. The solution control system was able to adjust the automatic solution correctly according to the criteria.  Farmers can use the mobile phone to access the control system through the internet at any time. They can check and solve the problem in real time. This system was implemented for planting three types of salad vegetables including, Red Oak, Green Oak and Green Butter. Growth data on height, number of leaves, canopy width and fresh weight at harvesting were recorded.  From the experiment, the result revealed that the mean height, number of leaves, canopy width, and fresh weight at harvesting of three salad plants grown in the system controlled by IoT was not different in comparison with those grown in the system by farmer (p > 0.05).