Decision Support Systems: A new intervention in agriculture. Decision support systems in agriculture Decision support system (DSS) is a computer based tool which provides prediction of crop yield under specific scenario on the basis of crop production data (obtained by field experiments), climatic and environmental historical by using basic inputs from the decision maker that can help the user to make a fair decision. Many components, such as simulation models, databases, and mathematical equations, must be combined to formulate a completely developed decision support system (DSS). The purpose of these decision support system (DSS) is to provide improved soil and crop management practices for the betterment of agriculture and farmer’s livelihood. These systems enable a person or a farmer to make right and fruitful decisions according to available resources. Decision support systems (DSS) are developed with the advancements in the field of information technology, which analyze the complex natural phenomenon of crop production by integrating different scientific fields and provide reduced data set which is more comprehensive and easy to understand for making a suitable decision. Decision support system (DSS) play a significant role in precision agriculture for crop production. DSS provide a site specific crop management practices for obtaining high yield under a specific climatic conditions. Decision support system can be used to assist agricultural policy makers for proper assessment of future policies and objectives. Decision support systems (DSS) can be used at farm level for providing information that used to improve plan and decisions. They also provide best plan of action that is useful at farm, regional, national and global level. DSS provides information about farming and agro-ecological systems and their risk attitudes. DSS can be used to analyze the benefits or risk involved in adopting a new practice at farm. These also give overview of economics involved in a farming practices, gives the cost benefit ratio for producing a crop under certain management practices. A decision support systems used in water resource planning and operational management. These help in planning a suitable irrigation scheduling and resource management. This planning