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2025 Vol.52, Issue 4 Preview Page

Plant & Forest

Understanding the combined effect of biochar and nitrogen fertilizer on crop yield, nitrogen use efficiency and physiological properties of corn plant
Rose Nimoh Serwaa1†
,
The Ngoc Phuong Nguyen1†
,
Taek-Keun Oh2*
,
Jwakyung Sung1*
1Department of Crop Science, Chungbuk National University, Cheongju 28644, Korea
2Department of Bio-Environmental Chemistry, College of Agriculture & Life Sciences, Chungnam National University, Daejeon 34134, Korea
*Corresponding Author
†These authors equally contributed to this study as first author.
1 December 2025. pp. 491-504
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Abstract

Biochar has gained significant attention due to its ability to improve soil quality, reduce carbon emissions and improve crop yield. The use of only conventional fertilizer is not the way to sustainable agriculture, but the combined use with biochar can improve soil fertility and enhance nutrient uptake. This study used different biochar levels consisting of B0 (0% biochar, 0 g·pot-1); B1 (100% biochar, 4 g·pot-1); B2 (200% biochar, 8 g·pot-1) each combined with nitrogen-based fertilizer (urea and slow releasing fertilizer [SRF]) applied as F1 and F2 respectively under greenhouse environment during the winter season. The data were taken 100 and 121 days after transplanting (DAT). The overall results shows that 200% biochar with urea (B2F1) had a significant influence on plant height, grain dry weight, total chlorophyll, and nitrogen use efficiency (NUE) of about 30%, 200%, 100%, 95% respectively in both Mibaek #2 and Taeyangchal. These findings give a comparable understanding of the physiological growth, grain yield, and enhanced NUE in corn production.

Keywords
biochar
nitrogen use efficiency
nitrogen-based fertilizer
physiological properties
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Information
  • Publisher :Institute of Agricultural Science, Chungnam National University
  • Publisher(Ko) :충남대학교 농업과학연구소
  • Journal Title :Korean Journal of Agricultural Science
  • Journal Title(Ko) :농업과학연구
  • Volume : 52
  • No :4
  • Pages :491-504
  • Received Date : 2025-07-17
  • Revised Date : 2025-08-21
  • Accepted Date : 2025-09-03
  • DOI :https://doi.org/10.7744/kjoas.520408
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