IoT has rapidly changed the growth of every field. IoT refers to network of objects or Things that are connected to internet for making interaction with each other. Things always refer IoT devices, Home appliances and everyday objects which have unique identity. These Things are able to do remote sensing, monitoring and controlling capabilities. These objects have various interfaces for sensor connectivity, internet connectivity and storage. IoT is a predominant technology that automates the traditional activities of each and every filed. It is an umbrella technology that includes various technologies for its effective implementation. The objective of this paper is to present an overview of IoT and its various enabling technologies for an implementation of IoT in traditional agriculture. IoT technologies are broadly classified in to three major categories. They are IoT software, IoT Hardware, IoT Connectivity. IoT technology adaption will perform drastic changes in traditional agriculture. Precision Agriculture using IoT helps farmers to predict the exact requirement of water, fertilizer and pesticides that are directly related to the growth of the crops. Precision Agriculture also helps to predict the climate change, soil nutrition, plant growth and plant disease for enhancing the productivity and profit. Precision Agriculture is suitable for Indian Agriculture to optimize the scared agricultural resources for obtaining high yield. Precision Agriculture uses various sensors such as Temperature, Humidity, Pressure, Soil Moisture and Light intensity for gathering parameters directly from the farm land. These parameters are sent to the cloud database through local gateway for further processing. The collected data are analyzed in the cloud database for taking predictive decision. Precision Agriculture insists the farmers to react quickly for optimizing the scared natural resources, monitoring their plant growth, quality and diseases for achieving high yield and profit.