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2025 Vol.70, Issue 4 Preview Page

Original Research Article

Climatic Factors Associated with Yield Variation of Rice Cultivar ‘Ilpum’ in the Inland Region of Gyeongsangbuk-do, South Korea

경북 내륙 지역 일품벼 수량 변화와 기상 요인의 상관성 분석

Suhyeon Heo1*
,
Jong-Hee Shin2
,
Young-Un Song1
,
Jong-Do Cheung2
,
Jun-Hong Park2
허 수현1*
,
신 종희2
,
송 영운1
,
정 종도2
,
박 준홍2
1Agriculture Researcher, Gyeongsangbuk-do Provincial Agricultural Research & Extension Services, Daegu 41404, Republic of Korea
2Agriculture Senior Researcher, Gyeongsangbuk-do Provincial Agricultural Research & Extension Services, Daegu 41404, Republic of Korea
1경상북도농업기술원 농업연구사
2경상북도농업기술원 농업연구관
*Corresponding Author
1 December 2025. pp. 213-221
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Abstract

This study investigated the long-term yield performance of the major rice cultivar ‘Ilpum’ in the inland region of Gyeongsangbuk-do and identified climatic factors influencing its productivity. Yield data from experimental fields in Daegu (1995-2024, 30 years) and Andong (2001-2024, 24 years), where ‘Ilpum’ was cultivated under identical management practices, were analyzed together with agro-meteorological records from the Korea Meteorological Administration. Over the past three decades, precipitation decreased in both regions, while sunshine duration increased and temperatures exhibited a consistent upward trend. In Daegu, maximum temperature rose markedly during the vegetative stage, whereas changes during the grain-filling stage were relatively moderate, limiting yield reduction. In contrast, Andong experienced greater temperature increases throughout the growing season, with particularly pronounced rises in mean, maximum, and minimum temperatures during the reproductive stage. Yield component analysis indicated that the number of panicles per hill was the primary determinant in Daegu, while an earlier heading date played a critical role in Andong. Correlation analysis further revealed that in Daegu, sunshine duration during the grain-filling stage and temperature during the vegetative stage were strongly associated with yield, whereas in Andong, both temperature and sunshine duration during the vegetative and reproductive stages showed strong relationships. Across both sites, rice yield was positively correlated with sunshine duration, while the grain-filling ratio was closely related to maximum temperature and sunshine duration during the grain-filling stage. These findings underscore the importance of temperature and solar radiation in determining rice productivity in inland regions and can serve as a basis for developing strategies to stabilize yield and grain quality of rice cultivation under climate change conditions.

Keywords
climate
grain yield
Ilpum
rice
sunshine duration
References
1

An, J. B., and Cho, J. W. 2010. Meteorological response against yield and yield component of rice in chungnam and daejeon area. Korean J. Agric. Sci. 37(2) : 177-189.

2

Cho, S. B., Youn, Y. J., Kim, S. Y., Jeong, Y. M., Kim, G. A., Kang, J. G., Kim, K. J., Cho, J. I., and Lee, Y. W. 2021. A comparative evaluation of multiple meteorological datasets for the rice yield prediction at the county level in South Korea. Korean J. Remote Sens. 37(2) : 337-357.

3

Cho, S. W., Jeung, J. U., Kang, K. H., Kim, H. S., and Kim, B. K. 2015. Evaluation on early-maturing Korean japonica cultivars for high-temperature tolerance during grain filling stage. Korean J. Crop Sci. 60(2) : 146-152.

10.7740/kjcs.2015.60.2.146
4

Choi, K. J., Park, T. S., Lee, C. K., Kim, J. T., Kim, J. H., Ha, K. Y., Yang, W. H., Kwak, K. S., Park, H. K., Nam, J. K., Kim, J. I., Han, G. J., Cho, Y. S., Park, Y. H., Han, S. W., Kim, J. R., Lee, S. Y., Choi, H. G., Cho, S. H., Park, H. G., Ahn, D. J., Joung, W. K., Han, S. I., Kim, S. Y., Jang, K. C., Oh, S. H., Seo, W. D., Ra, J. E., Kim, J. Y., and Kang H. W. 2011. Effect of temperature during grain filling stage on grain quality and taste of cooked rice in mid-late maturing rice varieties. Korean J. Crop Sci. 56(4) : 404-412.

10.7740/kjcs.2011.56.4.404
5

Epule, T. E., Chehbouni, A., Dhiba, D., Etongo, D., Driouech, F., Brouziyne, Y., and Peng, C. 2021. Vulnerability of maize, millet, and rice yields to growing season precipitation and socio-economic proxies in Cameroon. PLoS One 16(6) : e0252335.

10.1371/journal.pone.025233534106980PMC8189487
6

Howden, S. M., Soussana, J. F., Tubiello, F. N., Chhetri, N., Dunlop, M., and Meinke, H. 2007. Adapting agriculture to climate change. Proceedings of the National Academy of Sciences. 104(50) : 19691-19696.

10.1073/pnas.070189010418077402PMC2148359
7

IPCC. 2023. Climate Change 2021 - The Physical Science Basis: Working Group I Contribution to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge: Cambridge University Press.

8

Jagadish, S. K., Craufurd, P. Q., and Wheeler, T. 2007. High temperature stress and spikelet fertility in rice (Oryza sativa L.). J. Exp. Bot. 58(7) : 1627-1635.

10.1093/jxb/erm003
9

Lee, J. I., Kim, J. K., Shin, J. C., Lee, M. H., Kim, E. H., and Oh, Y. J. 1996. Effects of ripening temperature on quality appearance and chemical quality characteristics of rice grain. RDA J. Agr. Sci. (Korea Republic), 38(1) : 1-9.

10

Lee, J. W., Jang, Y. J., Ko, K. K., and Park, J.K. 2013. Effects of meteorological elements in the production of food crops: Focused on regression analysis using panel data. J. Environ. Sci. Int. 22(9) : 1171-1180.

10.5322/JESI.2013.22.9.1171
11

Lee, S. H., Son, E. H., Hong, S. C., Oh, S. H., Lee, J. Y., Park, J. H., Woo, S. H., and Lee, C. W. 2016. Growth and yield under low solar radiation during the reproductive growth stages of rice plants. Korean J. Crop Sci. 61(2) : 87-91.

10.7740/kjcs.2016.61.2.087
12

Liu, X., Ciais, P., Makowski, D., and Liang, J. 2024. Warming leads to lower rice quality in East Asia. Geophys. Res. Lett. 51(21) : e2024GL110557.

10.1029/2024GL110557
13

Makino, A., Sato, T., Nakano, H., and Mae, T. 1997. Leaf photosynthesis, plant growth and nitrogen allocation in rice under different irradiances. Planta 203(3) : 390-398.

10.1007/s004250050205
14

Nakano, H. 2000. Effect of early-stage shading of direct seeded rice on growth and yield components. Jpn. J. Crop Sci. 69(2) : 182-188.

10.1626/jcs.69.182
15

National Institute of Meteorological Sciences (NIMS). 2018. Climate Change over the Korean Peninsula during the Last 100 Years. Retrieved from Jeju, Korea.

16

Park, H. S., Baek, M. K., Jeong, O. Y., and Jeon, Y. H. 2021. Characterization of wind-tolerant rice varieties bred at the National Institute of Crop Science. Korean J. Breed. Sci. 53(1) : 32-41.

10.9787/KJBS.2021.53.1.32
17

Ren, H., Bao, J., Gao, Z., Sun, D., Zheng, S., and Bai, J. 2023. How rice adapts to high temperatures. Front. Plant Sci. 14 : 1137923.

10.3389/fpls.2023.113792337008476PMC10063981
18

Seo, M. C., Kim, J. H., Choi, K. J., Lee, Y. H., Sang, W. G., Cho, H. S., Cho, J. I., Shin, P., and Baek, J. K. 2020. Review on adaptability of rice varieties and cultivation technology according to climate change in Korea. The Korean J. Crop Sci. 65(4) : 327-338.

19

Seong, D. G., Kim, Y. G., Yun, S. M., Kim, H. C., Lee, J. J., Kim, C. S., and Chung, J. S. 2022. Studies on how changing the transplanting time affects rice quality and yield. Korean J. Breed. Sci. 54(3) : 177-183.

10.9787/KJBS.2022.54.3.177
20

Sheehy, J., Dionora, M., and Mitchell, P. 2001. Spikelet numbers, sink size and potential yield in rice. Field Crops Res. 71(2) : 77-85.

10.1016/S0378-4290(01)00145-9
21

Shin, D. H., Lee, M. S., Park, J. H., and Lee, Y. S. 2015. A meta analysis of the climate change impact on rice yield in South Korea. Journal of the Korean Data and Information Science Society 26(2) : 355-365.

10.7465/jkdi.2015.26.2.355
22

Shin, J. H., Han, C. M., Kwon, J. B., and Kim, S. K. 2019. Effect of climate on the yield of different maturing rice in the Yeongnam inland area over the past 20 years. Korean J. Crop Sci. 64(3) : 193- 203.

23

Shin, J. H., Han, C. M., Kwon, J. B., Kim, J. S., and Kim, S. K. 2020. Effect of Climate on the Yield of ‘Ilpum’Rice Cultivar in Gyeongbuk Province, South Korea over the Past 25 Years. Korean J. Crop Sci. 65(4) : 264-273.

24

Yang, W. H., Peng, S., and Dionisio-Sese, M. L. 2007. Morphological and photosynthetic responses of rice to low radiation. Korean J. Crop Sci. 52(1) : 1-11.

25

Yang, Y. H., Kang, S. G., and Chae, M. J. 2023. Critical Temperature for Early Marginal Transplanting of Japonica Rice in Korea. Korean J. Crop Sci. 68(4) : 246-261.

26

Yoshida, S. 1981. Tropical climate and its influence on rice. IRRI Research Paper Series. 20 : p25

27

Yun, S. H., and Lee, J. T. 2001. Climate change impacts on optimum ripening periods of rice plant and its countermeasure in rice cultivation. Korean J. Agric. For. Meteorol. 3(1) : 55-70.

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 :4
  • Pages :213-221
  • Received Date : 2025-09-15
  • Revised Date : 2025-11-02
  • Accepted Date : 2025-11-14
  • DOI :https://doi.org/10.7740/kjcs.2025.70.4.213
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