Abstract :
Tobacco is an annual herbaceous plant grown for its leaves. This plant belongs to
the Solanaceae family. Expert System is a system which is defined as a computer
program that gathers experts to solve problems that occur in tobacco plants. This
expert system was created with the aim of diagnosing tobacco plant pests and
providing the right solution to the problems that occur. This expert system combines
two methods, namely Forward Chaining and Certainty Factor. Forward Chaining
method that collects initial data or facts to go further which will result in a solution.
While the Certainty Factor method is a Certainty Factor method that uses the level
of trust from an expert. Accuracy results are carried out by comparing the results
of system diagnostics with manual diagnoses carried out by an expert on 20 cases
of tobacco plants with an accuracy of 90%.