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Influence of Lower Leaf Defoliation Treatment on the Growth, Yield and Quality of Strawberries

하위 적엽처리가 딸기의 생육 및 생산성에 미치는 영향

  • Lee, Gyu-Bin (Department of Horticulture Bioscience, Pusan National University) ;
  • Lee, Jung-Eun (Department of Horticulture Bioscience, Pusan National University) ;
  • Je, Byoung-Il (Department of Horticulture Bioscience, Pusan National University) ;
  • Lee, Yong-Jae (Department of Horticulture Bioscience, Pusan National University) ;
  • Park, Young-Hoon (Department of Horticulture Bioscience, Pusan National University) ;
  • Choi, Young-Whan (Department of Horticulture Bioscience, Pusan National University) ;
  • Son, Beung-Gu (Department of Horticulture Bioscience, Pusan National University) ;
  • Kang, Nam-Jun (Department of Horticulture, Gyeongsang National University) ;
  • Kang, Jum-Soon (Department of Horticulture Bioscience, Pusan National University)
  • 이규빈 (부산대학교 원예생명과학과) ;
  • 이정은 (부산대학교 원예생명과학과) ;
  • 제병일 (부산대학교 원예생명과학과) ;
  • 이용재 (부산대학교 원예생명과학과) ;
  • 박영훈 (부산대학교 원예생명과학과) ;
  • 최영환 (부산대학교 원예생명과학과) ;
  • 손병구 (부산대학교 원예생명과학과) ;
  • 강남준 (경상대학교 원예학과) ;
  • 강점순 (부산대학교 원예생명과학과)
  • Received : 2019.11.08
  • Accepted : 2020.02.20
  • Published : 2020.03.31

Abstract

The purpose of this study was to investigate the effects of defoliation treatment on the growth and yield of strawberries. There was a remarkable growth in the above-ground part and root of untreated strawberry plants possibly due to higher amount of photosynthesis, while overall plant growth was suppressed as the level of defoliation treatment increased. In both the "Seolhyang" and "Maehyang" cultivars examined, defoliation treatment resulted in small fruits and a low number of fruits per plant. Notably, 50% defoliation significantly reduced the number of fruits per plant to 8.2, compared to 13.8 in untreated plants. Defoliation treatment also negatively influenced the fruit quality including color, sugar content, and solid-acid rate. However, no significant changes in fruit firmness was observed in either cultivar. Therefore, retaining enough leaves without defoliation treatment can be important to increasing fruit yield, producing high quality fruits and saving labor required for defoliation.

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