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Biochar - utilizing organic residues

Technology / Service Summary

Biochar is made from various organic residues (biomass) that can contribute to solving various environmental problems.


By utilizing agricultural residues as a valuable agricultural material called biochar, we aim to contribute to solving social and environmental issues and develop sustainable agriculture. Biochar helps improve soil quality and reduce pollutants, which is essential for reducing greenhouse gas emissions and mitigating global climate change.


● Improvement of water retention in soil
● Ph adjustment
● Reduction of greenhouse gas emissions
● Improvement of fertilizer utilization efficiency
● Carbon sequestration
● Reduction of soil contamination
● Increase in soil organic carbon
● Improving agriculture productivity, etc.


Biochar agricultural application experiment in Zirobwe, Luwero District, Republic of Uganda. In this experiment, Professor Nishihara of the Faculty of Agriculture, Tottori University, demonstrated cultivation using biochar. Biochar made from rice husks, an agricultural residue generated in the region, was applied to maize cultivation fields. Compared with previous results, the following were achieved: (1) an increase in yield of approximately 20%; and (2) chemical fertilizer input reduced to half.
A carbon credit system is being built around the world that aims to similar activities globally to calculate the amount of carbon dioxide reduction from the number of carbon stocks, which allows the government and the private sector to buy and sell carbon credits in order to mitigate global climate change and add the value of the agricultural residues to improve the income of farmers.

Controlled Substance


Applicable Regions / Countries

  • Japan
  • Southeast Asia
  • Africa
  • ASEAN countries

    Cambodia,Viet Nam


Experimental description: Biochar agricultural application experiment
Case Study: Ninh Thuan Province, Vietnam
The experiment has been conducted continuously since October 2022 in collaboration with Professor Nishihara of the Faculty of Agriculture, Tottori University, with the support of Hiroshima Prefecture. For melon, cauliflower, and okra fields, bio char made from rice husks was applied. At present (as of April 2023), we are monitoring and conducting experiments based on various conditions such as yield, harvest quality, soil condition, and disease incidence.

Related SDGs Goals

  • 1. No Poverty
  • 3. Good Health and Well-being
  • 13. Climate Action
  • 15. Life on Land
  • 17. Partnerships to achieve the Goal

Biochar - utilizing organic residues