This paper on "Designing Automatic Plant Irrigation System Based on GSM, Moisture and Ultrasonic Sensors" is developed to create an automated irrigation mechanism which turns the pumping motors where one is water tank pump placed inside the river in order to take water to the tank placed in the farm and it will turn ON and OFF according to the level of water inside the tank using ultrasonic sensor and other one is water irrigation pump that placed inside the tank that used to make irrigation in the farm and it will be ON and OFF according tothe moisture content of the soil using the soil moisture sensor without the intervention of human. The benefit of employing these techniques is to decrease human interference, water wasted, and the time used to finish irrigation and it is also quite feasible and affordable. This designing irrigation system project is using proteus 8 professional, an Arduino Uno is programmed to collect the input signal according to the moisture content of the soil andthe water level inside the tank.Its output willdecide the motor pumps to be ON and OFF and then send a short message to the farmer’s mobile phone.

Keywords : Arduino Uno, Irrigation, Relay, Soil Moisture Sensor, Ultrasonic Sensor, Water Pump