ABSTRACT The Fluorescence Imaging system with two laser wavelengths was built to detect the level of water stress on oil palm plants. The system consisted of a 405 nm and 650 nm diode lasers, color filter, ND filters, and a monochrome CMOS camera. Samples were Tenera varieties of oil palm plants which were treated with variations of water volume which were 0 mL (without watering), 500 mL, …