IOT based SMART IRRIGATION SYSTEM can help in achieving optimum water resource utilization in the precision of farming landscape .This project mainly describes about an open source technology by sensing the ground parameter sensors such as HUMIDITY,TEMPERATURE,WIRELESS MOISTURE,WATER LEVEL. This was mainly a pure concept of IOT how the system monitor these sensors and tends to an result. The main aim of sensing the sensor was purely based on agriculture process. IOT is a bridging master of sensing using hardware. Wireless moisture sensor reduces the risk of laying wires in the land. Camera based and sound based bug detection help in securing the plants from bug. The complete system was based on development of sensing and monitoring the crops by concept of IOT. The System was based on irrigation so that the water flow can be controlled and reduced. The system only checks for the level of water by using these sensors and gives a effective result. Therefore, the system is predicting on application based sensors mainly to detect the water and save water in the field of agriculture.