International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS) Volume VI, Issue III, March 2017 | ISSN 2278-2540 www.ijltemas.in Page 22 Precision Agriculture Based on Wireless Sensor Network Jyotshna Kumari Student Amity University, Lucknow, Uttar Pradesh Satish Kumar Professor Amity University, Lucknow, Uttar Pradesh Abstract: Satellite farming or precision agriculture is a concept based on measurement, observations and response to the inter and intra farm variations in the crops. The growth and advancements in wireless sensor network (WSN) technology has directed agriculture sector into a new trend of smart agriculture. WSN technology provides processing of real time data from field. This is obtained through the sensors which are physically deployed into the fields. These smart agriculture approaches by the help of WSN reduces wastage of resources in farming unlike the conventional practice, and contribute in effectively utilizing the necessary resources resulting in increased crop yields. In this paper wireless agriculture and environment sensing system for crop monitoring is presented. The system test is implemented using the real time agricultural data and from the historical data. The system precisely acquires data and the information from the environment. Keywords:- WSN, Precision Agriculture, Relative Humidity (RH), Humidity Sensors, Irrigation controller, NRF24L01. I. INTRODUCTION griculture and farming plays a dominant role in the economy of s country. As India is mainly a agricultural country, more than 60% of Indian population depends on agriculture for sustaining their life and agriculture is the most important occupation for most of the families in India. But in present scenarios it has been observed that the contribution of Agriculture to GDP is declining nowadays and we are in urge to increase the crop productivity with effectiveness and with fine efficiency. In agriculture the irrigation is the most important factor as the monsoon rainfalls are very unpredictable and uncertain hence water scarcity is a big challenge in agriculture sector. Due to this reason there exists a demand for technical knowledge to make the irrigation system more efficient.[1]. The term precision agriculture (PA) is an approach to the farm which pinpoints the important parameters in which crop production yield is bounded by variable parameters, and figure out integral spatial variability [6]. Much conventional irrigation system has been practiced from the past. In order to improve these conventional methods there has been developed many system using advanced technologies in wireless sensor network which helps in reducing crop wastes, prevents excess watering to crops and helps in increasing crop yields. In this paper a system developed using sensors to monitor crop-field and automate irrigation system is studied and overviewed. This system gives an idea about the wireless transmission of sensor data from fields to coordinator, storing it in a database, and controlling required field parameters from mobile application. II. AGRICULTURE SYSTEM BASED ON WSN An effective precision agriculture system has the function that the terminal node can acquire soil moisture content, humidity, temperature, conductivity and light intensity through self- organized network. The collected information are transmitted to the gateway wirelessly using modes like LAN or WAN. The systems embrace the cluster topologies & hierarchical routing protocols for this purpose. Every sensing node are split into several clusters and each cluster is analogous to a kind of immovable self-systemizing network. The nodes are then further split in common & the cluster-head nodes. Work of the common nodes is to accumulate the facts which are sent to the cluster head nodes. The received facts are banked into the memory unit. Then expert decision support system analyzes & processes facts. The network node must be on bulk-scale, and high density deploying method for monitoring of the coverage sector and connectivity [10]. Fig: 1 WSN Network A. Hardware Design of Sensor Nodes A