Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Effects of biochar-based fertilizer on ammonia volatilization under controlled conditions

  • Yun-Gu Kang (Department of Bio-Environmental Chemistry, College of Agriculture and Life Science, Chungnam National University) ;
  • Jae-Han Lee (Department of Bio-Environmental Chemistry, College of Agriculture and Life Science, Chungnam National University) ;
  • Jun-Yeong Lee (Department of Bio-Environmental Chemistry, College of Agriculture and Life Science, Chungnam National University) ;
  • Jun-Ho Kim (Department of Bio-Environmental Chemistry, College of Agriculture and Life Science, Chungnam National University) ;
  • Taek-Keun Oh (Department of Bio-Environmental Chemistry, College of Agriculture and Life Science, Chungnam National University)
  • Received : 2023.05.30
  • Accepted : 2023.08.23
  • Published : 2023.09.01
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Abstract

As the interest in sustainable and environmentally friendly agriculture continues to grow, there is a corresponding increase in organic fertilizers utilization. However, studies on ammonia (NH3) emissions, which are primarily generated in the agricultural sector, by organic fertilizers are lacking. Additionally, the reliance on imported ingredients in the production of organic fertilizers hinders the widespread adoption of organic fertilizers. This study aims to evaluate NH3 volatilization by incorporating rice husk biochar into organic fertilizers. The study also aims to assess whether domestically produced rice husk biochar can serve as a viable substitute for imported ingredients. Here, the dynamic chamber method was used under controlled conditions. Results show that inorganic fertilizers readily undergo hydrolysis, thereby rapidly generating significant amounts of NH3, particularly in the initial stages. In contrast, organic fertilizers decompose gradually, leading to relatively long-term NH3 emissions. The incorporation of rice husk biochar into organic fertilizers demonstrated diminished daily NH3 emissions compared to those from commercial organic fertilizers, resulting in decreased total NH3 volatilization. These findings show that the combination of rice husk biochar can reduce NH3 volatilization and serve as an alternative to imported ingredients for organic fertilizers. The results of this study can be utilized as fundamental information for the assessment of biochar as a potential ingredient for organic fertilizers.

Keywords

Acknowledgement

This research study was conducted with support from a research grant awarded by the Cooperative Research Program for Agriculture Science & Technology Development of Rural Development Administration, Republic of Korea (Project No. PJ017028).

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