Abstract: Knowledge and information on all aspects of coconut disease management and variety selection are the foundations on which integrated disease management and variety selection decisions are made. To improve productivity and overall profitability, the expert system on Coconut disease management was developed to provide the management practices to be followed for getting maximum returns by detecting the disease at an early stage.The practical identification of the suitable varieties for getting high yield of copra or the varieties which are suitable for tender nut purpose, commercial cultivation and to further enhance the productivity and adaptability are the important basis for selection of varieties for getting higher yield. Most of the varieties are documented for their distinct characteristics. An extensive variety selection module is available in the system with a scientific knowledge base in the background. It is concluded that the expert system on variety selection can be used to select the suitable varieties based on the characteristics required by the end user for getting the maximum returns.