[Agricultural and Fisheries Technology Newspaper=Reporter Park Nara] The Chungnam Provincial Agricultural Technology Institute (Director Kim Young) has developed a 'light intensity-based fertigation technology' that can increase the productivity of hydroponic perilla cultivation and has begun to disseminate it to farmers. The institute held an 'on-site evaluation meeting for cumulative light intensity-based fertigation methods' at the Banseok Perilla Leaf Farm in Namil-myeon, Geumsan-gun, with the participation of around 50 farmers and representatives from research and guidance institutions. This event was organized to support the high-quality, high-income production of perilla, which has seen a surge in demand due to recent export expansion. This new technology complements the limitations of the existing timer-based fertigation method by initiating fertigation when the accumulated light intensity reaches 150 J/cm².