In countries like India, irrigation is an essential practice in many agricultural cropping system. Efficient water application and management are major concerns. Self –propelled center pivot and linear-move irrigation systems generally apply water quite uniformly. However, substantial variations in soil properties and water availability exist across most fields. In these cases, the ability to apply site-specific irrigation management to match spatially and temporally variable conditions can increase application efficiencies, reduce environmental impacts, and even improve yields. The development of a distributed in-field sensor-based site-specific irrigation system offers the potential to increase yield and quality by saving water. The main objective of this work is to monitor the moisture content and temperature of the soil in cultivating field. The above parameters are estimated using temperature and humidity sensor. Based on soil moisture, the operation of the electric motor which is used for pumping water will be automatically controlled through electromagnetic relay. The pumping motor will pump the water into the field using drip water system until the field is wet which is continuously monitored by the microcontroller. Also the details about process of the system will be sent through phone using GSM modem. This system optimizes the water content of the soil by saving water. 

Index terms : humidity sensor, temperature sensor, agricultural techniques, GSM modem , embedded system