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Original Research Article

Trends in National Attainable Rice Yield and Yield‑Gap Based on Variety Adoption Rates in the Republic of Korea

국내 벼 품종 등록수량 기반 획득가능 기대수량 추이와 수량차 분석

Junhwan Kim1*
김 준환1*
1Assistant Professor, Korea National University of Agriculture and Fisheries, Jeonju 54874, Republic of Korea
1한국농수산대학교 식량작물학과 조교수
*Corresponding Author
1 September 2025. pp. 135-142
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Abstract

In this study, we analyzed the trends in national average attainable yield by assuming the registered yields of major domestic rice varieties as attainable yields and using variety supply statistics from the Korea Seed & Variety Service from 2015 to 2024. Although the yield performance by breeding era increased 560 kg/10a in the 2000s, it displayed a decline to 540–550 kg/10a after the 2010s. While the adoption rate of varieties developed in the 2010s rapidly increased from 5% in 2015 to 42% in 2024, the national average attainable expected yield remained stagnant within the range of 545–555 kg/10a. The average yield gap between attainable and actual national average yields was 4.9%, indicating that farmer technical levels approached research-level standards. Future variety breeding and adoption pattern analysis predicts that the national average yield will gradually decline after 2025. Therefore, innovative variety development with significantly improved genetic yield potential would be necessary to enhance rice productivity in Korea.

Keywords
adoption rate
attainable yield
breeding era
rice variety
yield gap
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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 : 70
  • No :3
  • Pages :135-142
  • Received Date : 2025-07-29
  • Revised Date : 2025-08-24
  • Accepted Date : 2025-08-25
  • DOI :https://doi.org/10.7740/kjcs.2025.70.3.135
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