Agriculture plays an important role in the life of a Gross Domestic Product of every country. It is the backbone of economy of every country. Many problems have been found in this field. As the most serious problem is the shortage of water resources for the present as well as for future generation. It is necessary to adopt some smart techniques to preserve the water. The most highlighted feature of this paper is how smartly and automatically control the water supply to the agriculture fields according to the need. For this, sensors used are soil moisture sensor and DHT-11 temperature sensor. All the information is sent on the farmer mobile application using Wi-Fi Relay Module and Arduino UNO R3.