Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Effect of Flower and Fruit Thinner on Fruit Set and Fruit Quality of 'Gamhong' Apples

적화제 및 적과제가 '감홍' 사과의 착과와 과실 품질에 미치는 영향

  • Yoo, Jingi (Department of Horticultural Science, Kyungpook National University) ;
  • Kang, Bong Kook (Department of Horticultural Science, Kyungpook National University) ;
  • Kim, Dae Hyun (Department of Horticultural Science, Kyungpook National University) ;
  • Lee, Jinwook (Department of Horticultural Science, Kyungpook National University) ;
  • Lee, Dong Hoon (Planning and Coordination Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Kweon, Hun-Joong (Apple Research Institute, National Institute of Horticultural and Herbal Science, RDA) ;
  • Choi, In Myung (Fruit Research Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Jung, Hee Young (College of Agriculture and Life Science, Kyungpook National University) ;
  • Choung, Myoung-Gun (Department of Herbal Medicine Resource, Kangwon National University) ;
  • Choi, Dong Geun (Department of Horticultural Science, Chonbuk National University) ;
  • Kang, In-Kyu (Department of Horticultural Science, Kyungpook National University)
  • 유진기 (경북대학교 원예과학과) ;
  • 강봉국 (경북대학교 원예과학과) ;
  • 김대현 (경북대학교 원예과학과) ;
  • 이진욱 (경북대학교 원예과학과) ;
  • 이동훈 (국립원예특작과학원 기획조정과) ;
  • 권헌중 (국립원예특작과학원 사과연구소) ;
  • 최인명 (국립원예특작과학원 과수과) ;
  • 정희영 (경북대학교 응용생명과학부) ;
  • 정명근 (강원대학교 생약자원개발학과) ;
  • 최동근 (전북대학교 원예학과) ;
  • 강인규 (경북대학교 원예과학과)
  • Received : 2015.08.05
  • Accepted : 2016.01.25
  • Published : 2016.02.29
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Abstract

This study investigated the effects of flower and fruit thinning agents on fruit set and harvested fruit quality attributes in 'Gamhong' apples. Lime sulfur, MaxCel (1.9% BA), and Fruitone (3.5% NAA) were applied either at post-bloom or fruitlet stages to mature 'Gamhong/M.9' trees. In 2011, the numbers of fruits per cluster in terminal flowers were 1.74, 0.82, and 1.15 for the control, lime sulfur, and Maxcel (applied at 10-mm fruit stage) treatments, respectively. The percentages of single fruit per cluster were 36.0, 47.9, and 48.7% for the control, lime sulfur, and Maxcel (10 mm) treatments, respectively, while the percentages of clusters with three fruits per cluster were 22.9, 1.4, and 5.8%. In lateral flowers, fruit numbers per cluster were 1.20, 0.36, and 0.50 for the control, lime sulfur, and Maxcel (10 mm) treatments, respectively. In 2012, all the thinning treatments showed a positive effect on flower and fruit thinning, compared with the control. Moreover, the treatment with thinning agents did not affect fruit quality. Overall, the results suggest that a single application of flower or fruit thinning agents would be sufficient, rather than the mixed application of thinning agents, based on the observed decrease in fruit setting.

본 연구는 2년에 걸쳐 '감홍' 품종에 석회유황합제(Lime sulfur), MaxCel(1.9% BA), Fruitone(3.5% NAA)을 처리하여 적과와 과실품질에 미치는 영향을 조사하였다. 1차년도 약제 처리에 의한 과총당 착과수는 석회유황합제 3회 처리구는 0.82개, MaxCel(10mm) 처리구 역시 1.15개로 무처리구 1.74개에 비해 유의하게 적어 적과 효과가 인정되었다. 과총당 과실의 착과수는 석회유황합제 또는 MaxCel(10mm) 처리 시 단일과 착과율이 각각 47.9%와 48.7%로 무처리 36.0%에 비하여 높았고, 3개이상 과실 착과율이 각각 1.4%와 5.8%로 무처리 22.9%에 비해 낮아 좋은 적과 효과를 보였다. 액화아의 경우 석회유황합제 및 MaxCel(10mm) 처리구 0.36개와 0.50개로 무처리구 1.20개에 비하여 낮아 정화아에서와 비슷하게 우수한 적과 효과를 보였다. 2년차 적과 효과는 무처리를 제외한 모든 처리구에서 높은 적과 효과를 보였고, 약제 처리가 과실품질에 미치는 영향은 없었다. 따라서, 석회유황합제 또는 MaxCel 혼용처리보다 단용처리만으로도 착과수를 감소시키는데 효과가 있었다.

Keywords

References

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