Wireless automatic irrigation system for sandy loam soil

Abstract

Irrigation extremely important practice is agricultural and most water-consuming which has to be reduced. An efficient irrigation system which includes soil moisture sensors can help in the efficient management of irrigation practices. The research includes detailed lab calibration of Df robot soil moisture sensor and development of wireless auto irrigation system using NodeMCU microcontroller. Sensing unit which measures soil moisture and sends data wirelessly. The controlling unit was able to receive & display soil moisture data and take irrigation decision. Microcontroller with relay was used for switching action. An android application is also developed for displaying and manually controlling the water pump. Calibrated DF robot soil moisture shows reading similar to the gravimetric analysis for sandy loam soil. Developed wireless automatic irrigation system worked satisfactorily for sandy loam soil with efficient measurement of soil moisture.