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Pyrolysis temperature and time of rice husk biochar potentially control ammonia emissions and Chinese cabbage yield from urea-fertilized soils.
Kang, Yun-Gu; Chun, Jin-Hyuk; Yun, Yeo-Uk; Lee, Jun-Yeong; Sung, Jwakyung; Oh, Taek-Keun.
Afiliación
  • Kang YG; Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon, 34134, South Korea.
  • Chun JH; The Korea Ginseng Inspection Office, National Agricultural Cooperative Federation, Geumsan, 32747, South Korea.
  • Yun YU; Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon, 34134, South Korea.
  • Lee JY; Division of Environmentally Friendly Agriculture, Chungcheongnam-do Agricultural Research and Extension Services, Yesan, 32418, South Korea.
  • Sung J; Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon, 34134, South Korea.
  • Oh TK; Department of Crop Science, Chungbuk National University, Cheongju, 28644, South Korea. jksung73@chungbuk.ac.kr.
Sci Rep ; 14(1): 5692, 2024 03 08.
Article en En | MEDLINE | ID: mdl-38453974
ABSTRACT
Current agricultural practices are increasingly favoring the biochar application to sequester carbon, enhance crop growth, and mitigate various environmental pollutants resulting from nitrogen (N) loss. However, since biochar's characteristics can vary depending on pyrolysis conditions, it is essential to determine the optimal standard, as they can have different effects on soil health. In this study, we categorized rice husk biochars basis on their pH levels and investigated the role of each rice husk biochar in reducing ammonia (NH3) emissions and promoting the growth of Chinese cabbage in urea-fertilized fields. The findings of this study revealed that the variation in pyrolysis conditions of rice husk biochars and N rates affected both the NH3 emissions and crop growth. The neutral (pH 7.10) biochar exhibited effective NH3 volatilization reduction, attributed to its high surface area (6.49 m2 g-1), outperforming the acidic (pH 6.10) and basic (pH 11.01) biochars, particularly under high N rates (640 kg N ha-1). Chinese cabbage yield was highest, reaching 4.00 kg plant-1, with the basic biochar application with high N rates. Therefore, the neutral rice husk biochar effectively mitigate the NH3 emissions from urea-treated fields, while the agronomic performance of Chinese cabbage enhanced in all biochar amendments.
Asunto(s)

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Oryza / Suelo Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article País de afiliación: Corea del Sur

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Oryza / Suelo Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article País de afiliación: Corea del Sur