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Panel analysis of radish yield using air temperature

기온을 이용한 무 생산량 패널분석

  • Kim, Yong-Seok (Climate Change & Agroecology Division, National Academy of Agricultural Science) ;
  • Shim, Kyo-Moon (Climate Change & Agroecology Division, National Academy of Agricultural Science) ;
  • Jung, Myung-Pyo (Climate Change & Agroecology Division, National Academy of Agricultural Science) ;
  • Jung, In-Tae (Climate Change & Agroecology Division, National Academy of Agricultural Science)
  • 김용석 (국립농업과학원 농업환경부 기후변화생태과) ;
  • 심교문 (국립농업과학원 농업환경부 기후변화생태과) ;
  • 정명표 (국립농업과학원 농업환경부 기후변화생태과) ;
  • 최인태 (국립농업과학원 농업환경부 기후변화생태과)
  • Received : 2014.11.05
  • Accepted : 2014.12.31
  • Published : 2014.12.31

Abstract

According to statistical data the past ten years, cultivation area and yield of radish are steadily decreasing. This phenomenon cause instability of radish's supply due to meteorological chage, even if radish's yield per unit area is increasing by cultivation technological development. These problems raise radish's price. So, we conducted study on meteorological factors for accuracy improvement of radish yield estimation. Panel analysis was used with two-way effect model considering group effect and time effect. As the result, we show that mixed effects model (fixed effect: group, random effects: time) was statistical significance. According to the model, a rise of one degree in the average air temperature on August will decrease radish's yield per unit area by $428kg{\cdot}10a^{-1}$ and that in the average air temperature on October will increase radish's yield per unit area by $438kg{\cdot}10a^{-1}$. The reason is that radish's growth will be easily influenced by meteorological condition of a high temperature on August and by meteorological condition of a low temperature on Octoboer.

Keywords

References

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