Copyright: © the author(s), publisher and licensee Technoscience Academy. This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non- commercial use, distribution, and reproduction in any medium, provided the original work is properly cited International Journal of Scientific Research in Computer Science, Engineering and Information Technology ISSN : 2456-3307 (www.ijsrcseit.com) doi : https://doi.org/10.32628/CSEIT22846 50 Smart Irrigation System Using IOT Dr. Joseph Merlin Florrence Department of Computer Applications (UG), Sacred Heart College (Autonomous), Tirupathur, Tamil Nadu, India Article Info Publication Issue : Volume 8, Issue 4 July-August-2022 Page Number : 50-55 Article History Accepted: 02 July 2022 Published: 11 July 2022 ABSTRACT Plants are the most essential factors for all the living creatures on the earth. It is very much important to focus on the cultivation of crops and plants. The growth of the plants is affected by the environment like temperature, water, humidity, fertilizers, and so on. Especially water affects the growth of the plant is a vital way. If the plants get water less than the ideal, it will affect the growth of the plant; or if the level of water increases, it will cause fungi and damage plants. This research work aims to provide an IoT-based solution to monitor the humidity level of the plant and irrigate accordingly. IoT based tool has been developed which can be controlled through a mobile app. The proposed application will help reduce the wastage of water and water the plant when needed. Keywords : IoT, Agriculture, Irrigation, Sensors. I. INTRODUCTION Human beings are very much evolving in agriculture methods such as subsistence farming, shifting agriculture, intensive farming, crop rotation, permanent agriculture or sedentary cultivation, and many other methods. They also very much evolve in irrigation systems; irrigation is the process of applying water to the crops artificially to fulfil their water requirements. Nutrients may also be provided to the crops through irrigation. The various sources of water for irrigation are wells, ponds, lakes, canals, tube wells, and even dams. Irrigation offers moisture required for growth and development, germination, and other related functions. The proposed work will help to improve the level of the irrigation system. Throughout the world, irrigation (water for agriculture, or growing crops) is probably the most important use of water. Estimates vary, but about 70 percent of the world’s freshwater withdrawals go towards irrigation. The growth of the plant is affected either by a lack of water or excess water. It is important to understand the water required for the plant before irrigation. Irrigation management plays a vital role in ensuring that crops are getting the right amount of water at the right time. The Internet of Things (IoT) is making it easier for farmers to monitor and control water resources to meet demand and also reducing waste and cutting operational costs. This research work uses NodeMCU ESP8266 to control the motor (i.e., to start and stop the motor) and the rest of the whole irrigation process will be automatically controlled by itself. This article elaborates the literature review in section 2. Section 3 explains the methods and tools used to