Key Facts
• June 16, 2025: Minister Koizumi announces abolition of the 70-year-old Rice Yield Index.
• The index, based on 8,000 random samples, rated 2024 rice yield at 101 (average).
• Farmers criticized the index for inaccuracies and outdated methods.
• Discrepancy in grain size standards: farmers use 1.8–1.9mm, ministry uses 1.7mm.
• New methods to include satellite and AI technology for precise yield data.
• Expert Matsudaira Naoya highlights climate change and reduced staff as key issues.
• Reform aims to improve food security and prevent future rice shortages.
Summary
Japan’s Minister of Agriculture, Tetsuro Koizumi, announced a major reform on June 16, 2025, abolishing the 70-year-old Rice Yield Index due to its inaccuracies and outdated methods. Farmers have long criticized the index for failing to reflect actual conditions, citing issues like climate change and discrepancies in grain size standards. The Ministry of Agriculture plans to adopt advanced technologies, including satellites and AI, to enhance the precision of rice yield surveys. Experts, such as Naoya Matsudaira from Utsunomiya University, emphasize the need for thorough on-site evaluations and addressing staffing shortages caused by past administrative reforms. This initiative, part of Koizumi’s broader agricultural reform, aims to strengthen Japan’s food security and prevent future rice shortages.
