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Abstract
Soil management is very important in agriculture and an AVR microcontroller based system to measure and analyze the pH, Conductivity/Salinity and soil VMC with the help sensors is presented in this paper. Soil pH, soil conductivity and soil salinity are the soil properties affecting the soil quality and plant growth. The developed device is designed to measure these soil properties and display the soil quality on LCD as well as on LED panel. Based on the measured data the treatment to the soil and irrigation can be planned. The device is designed using AVR series microcontroller with inbuilt ADC needed for sensor data acquisition and thus reducing the design complexity of the system.