The JA Nishimikawa Cucumber Subcommittee in Aichi Prefecture, Japan, has installed a rare LAI (Leaf Area Index) measurement sensor in their cucumber field, a first for Japan's facility cucumber producers. The sensor, developed by Sensor IT studio and funded through the Ministry of Fisheries 2019 Smart Technology Development and Demonstration Project, measures the vertical scattered light ratio, which changes based on leaf growth. The subcommittee, which includes 40 members, also installed drainage counters and flow sensors to optimize growth. The adoption of these smart technology tools, including ICT, has led to a significant 15% increase in yield per 10 ares and sales amount since their introduction. The subcommittee is actively using ICT to improve cultivation technology and share advanced production techniques.