Asst. Prof. Dr. Charturong Chanseetis and students in the Division of Agricultural Science at Kanchanaburi Campus have established a growth model using a fertigation program and environmental data to produce high-quality tomatoes, especially those with high sugar content. Tomatoes are rich in calories, lycopene, vitamins, and minerals, but inappropriate weather and water management are important factors for high-quality tomato production. A cutting-edge technique is being utilized to collect environmental data to create a decision-support system for an autonomous fertigation controller system for high-sugar content tomato production.