Background Grape is high-skilled crop and expert advice is required on day to day basis. Most of the viticultural operations are dependent on phenology, weather and soil factors. These factors are site-specific and vary from farm to farm. Therefore, the problems are site-specific and the expert advice also varies from farm to farm. Technology Details To provide farm-specific advisory to the farmers, decision support systems (DSS) were developed for irrigation and nutrition management, pest and disease risk assessment and advisory for their management. Decision support system will improve the grape grower’s ability to take crucial management decisions on time. It will provide recommendations to the grower based on his/her crop data, farm data, and prevailing weather conditions that will support or assist grower’s decision making capacity in terms of water, irrigation, pest and disease management. It will also help in guiding growers on pest and disease risks and nutrient use based upon soil and petiole test and problems caused due to heat and moisture stress. Application programming interface (API) has been developed which processes inputs given by mobile or web application and gives outputs for use in the application. The access to this API can be provided to licensed mobile or web application service providers who will give access of DSS to farmers via his web/mobile application. The service provider may be given license for API access for fixed duration.