Key Facts
• August 6, 2025: Biochar applied in tea fields in Kikugawa City, Shizuoka.
• Biochar is made from biomass like wood and rice husks.
• Experiment aims to improve soil and reduce CO2 emissions.
• Biochar can trap CO2 for over 100 years, aiding climate change mitigation.
• Conducted by Chubu Electric Power and JA Enshu Yumesaki since 2022.
• Alkaline biochar found safe for acidic tea tree soil.
• Concerns about nitrous oxide emissions resolved through research.
• Current phase uses biochar from spruce and larch trees.
• Experiment covers 2,000 square meters, focusing on mechanized application.
• Future goal: Utilize abandoned tea trees and old wood for biochar production.
Summary
An ongoing experiment in Shizuoka, Japan, explores the use of biochar, a carbon-rich material derived from biomass, to create eco-friendly tea farms. The project, led by Chubu Electric Power and JA Enshu Yumesaki, aims to improve soil quality and reduce greenhouse gas emissions. Biochar can trap CO2 for over a century, offering a sustainable solution for climate change. Recent trials confirmed its safety for tea trees and addressed concerns about nitrous oxide emissions. The final phase focuses on practical application, using biochar from spruce and larch trees across 2,000 square meters. Researchers aim to mechanize the process for efficiency and plan to repurpose abandoned tea trees for future biochar production, advancing circular agriculture.
