system which automatically turns on or
off the water supply system depending upon the moisture content of the soil. It works
by the input of soil moisture sensor module if the moisture content detected by the
sensor is less than a certain prescribed limit initiliases at the time of programming
then the microcontroller automatically switch on the motor(pump) to irrigate the field
without the intervention of any human benigs & it get automatically off after some
prescribed time limit or can be off by detecting the output of sensor is raised above
some limit set at the initiliasing time of programming.