The need for smart irrigation system cannot be over emphasized. The traditional way of irrigation is the use of hose attached to taps or watering can which are sprayed by hand and moved from one place to another manually. However, apart from the fact that this method is stressful, this is not easy to practice on large farm lands. Although water, in some parts of the world is in abundance, it is still a scarce resource in some other regions. In this research, the review synthesizes key findings from various studies, highlighting the importance of automation in enhancing water management efficiency and crop performance. This research provides both smart and effective management of water usage and power consumption of irrigation systems. It presents a smart irrigation system that uses environmental information to determine when and where irrigation is required through use of microcontroller, sensors and integration of water pumps with the decision making system.