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2026 Vol.71, Issue 2 Preview Page

Original Research Article

Analysis of Growth and Yield Variation of Sprout Soybeans by Sowing Date in Central Northern Inland and Southern Coastal Regions in Response to Climate Change

기후변화 대응 중북부 내륙 및 남부해안 지역 나물콩의 파종 시기에 따른 생육 및 수량 변이 분석

Se Eun Chae1
,
Ji Ae Lee2
,
Seung Ho Jeon3*
채 세은1
,
이 지애2
,
전 승호3*
1Ph. D, Dep. of Life Resources Sunchon National Univ, Suncheon 57922, Korea
2Researcher, Gangwon State gricultural Research & Extension Services, Crop Research Section, Gangwon 24203, Korea
3Professor, Dep. of Agricultural Life Science Sunchon National Univ, Suncheon 57922, Korea
1국립순천대학교 생명자원학과 박사과정
2강원특별자치도농업기술원 작물연구과 연구사
3국립순천대학교 농생명과학과 교수
*Corresponding Author
1 June 2026. pp. 48-57
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Abstract

In this study, we evaluated the effects of sowing dates on the growth and yield of sprout soybeans (Glycine max L.) to establish stable cultivation strategies under climate change in the north-central inland (Chuncheon) and southern coastal (Suncheon) regions of Korea. Two cultivars, ‘Aram’ and ‘Pungsannamulkong’, were evaluated over two years (2023-2024) across four sowing dates: late May, early June, mid-June, and late June. The results indicated that delayed sowing significantly reduced accumulated temperature during vegetative and reproductive stages in both the regions. Growth traits at the flowering stage and the lodging index also decreased as sowing was delayed. In Chuncheon, ‘Aram’ achieved its highest yields in mid-June 2023 (343 kg/10a) and early June 2024 (225 kg/10a), while ‘Pungsannamulkong’ performed best with early to mid-June sowing (over 330 kg/10a). In contrast, yields in Suncheon for both cultivars increased with delayed sowing. ‘Aram’ reached maximum yields of 357 and 290 kg/10a in late June, while ‘Pungsannamulkong’ followed a similar trend with peak yields of 383 and 325 kg/10a in 2023 and 2024, respectively. Consequently, the observed yield variations between Chuncheon and Suncheon, despite identical sowing dates, may be attributed to differences in temperature and photoperiod conditions resulting from latitudinal variations, which induced distinct growth patterns. Therefore, the optimal sowing window to ensure stable cultivation and enhance the productivity of sprout soybeans in response to climate change is early to mid-June for the Chuncheon region and late June for the Suncheon region.

Keywords
accumulated temperature
climate change
sowing date
sprout soybean
yield
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Information
  • Publisher :The Korean Society of Crop Science
  • Publisher(Ko) :한국작물학회
  • Journal Title :The Korean Journal of Crop Science
  • Journal Title(Ko) :한국작물학회지
  • Volume : 71
  • No :2
  • Pages :48-57
  • Received Date : 2026-02-11
  • Revised Date : 2026-03-19
  • Accepted Date : 2026-04-14
  • DOI :https://doi.org/10.7740/kjcs.2026.71.2.048
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