Due to high population the needs of human being are increasing day by day. Simultaneously the food material requirements are also increasing. In order to meet the food demands, it is essential to improve the efficiency of crop production in the scenarios of manpower and water scarcity. The need of hour is to make an efficient utilization of available manpower, water and fertilizers which can lead to cost optimization of the annual crop-production. Fortunately the different technologies and techniques available today can help to achieve the goal of cost optimization and quality control. This preliminary work focuses on the cost effective automatic smart irrigation system which allows saving water and human efforts with desired quantity and quality of crop-production. The proposed system also incorporates a simple yet lightweight smart phone application which can permit the farmer to execute the irrigation and fertilization schedules. The experimental setup in the farm admeasuring 1 acre of sugarcane crop showed that the water requirement reduced by 56%, manpower expenses for irrigation reduced by 90% while electricity consumption is also reduced by 75 % to that of traditional methods. The proposed system thus leads to a win-win situation for farmers as well as government struggling for water and power supply in our country.