Abstract: This research involved the design of an initial expert system which helps farmers and specialists diagnose and provide
appropriate advice on banana diseases. The management of knowledge used in the expert system was also discussed. One of the key
elements of this research was to find the appropriate language to diagnose the disease and the current situation in the knowledge base.
Expert systems enable effective consultation. Production rules were used to capture knowledge. The expert system was developed using
CLIPS with the Delphi 10.2 as user interface. The expert system produced good results in analyzing cases of tested banana disease and
enabling the system to determine the correct diagnosis in all cases