Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Effect of plastic film rain shelter installation in Asian pear orchards on frost and freeze damage and fruit quality

  • Hyeong-Seok Lee (Department of Bio-AI Convergence, Chungnam National University) ;
  • Yu-Rim Kim (Department of Bio-AI Convergence, Chungnam National University) ;
  • Young-Jik Ahn (Department of Horticulture, Paichai University) ;
  • Ho-Seok Son (Daejeon Horticultural Agricultural Cooperation) ;
  • Jong-Pil Chun (Department of Bio-AI Convergence, Chungnam National University)
  • Received : 2023.08.03
  • Accepted : 2023.08.29
  • Published : 2023.09.01
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Abstract

This study evaluated the impact of rain shelters made of plastic film on spring frost damage and fruit quality in Asian pears ('Niitaka') over two years. In 2021, during the coldest spring days (between 0:00 am and 7:00 am), temperatures dropped to -1.20 - 0.43℃ at 120 cm and -1.33 - 0.57℃ at 200 cm above ground level in the control. Conversely, the rain shelter treatment maintained higher temperatures, -0.40 - 0.87℃ at 120 cm and -0.43 - 0.77℃ at 200 cm. Flower damage was significantly lower in the rain-sheltered group, with incidences of 1.3 and 6.9% at 120 and 200 cm, respectively, compared with 18.1 and 22.6% in the control group. Visual observations verified the prevention of frost adhesion on flower organs in the sheltered group, compared with noticeable pistil death and petal browning in the control group. In 2022, when temperatures remained above 0℃, fruitlet stalk length was 5 - 6 mm longer in the sheltered group. The cumulative impact of rain shelters was evident in the improved fruit quality over the two years. This study suggests resilient cultivation strategies in the face of climate change to reduce frost damage, increase productivity, improve fruit quality, and potentially increase incomes of the farmers.

Keywords

Acknowledgement

이 논문은 2023년도 정부(과학기술정보통신부)의 재원으로 정보통신기획 평가원의 지원을 받아 수행된 연구임(No.RS-2022-00155857, 인공지능융합혁신 인재양성[충남대학교]).

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