Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Multiple Applications of Lime Sulfur for Fruit Thinning of 'Fuji' and 'Hongro' Apple Trees

석회유황합제의 다중처리에 따른 '후지' 및 '홍로' 사과의 적과 효과

  • Chun, Ik-Jo (School of Bioresource Sciences, Andong National University) ;
  • Zheng, Wei-Wei (School of Bioresource Sciences, Andong National University) ;
  • Choi, Cheol (Division of Plant Biosciences, Kyungpook National University) ;
  • Song, Yang-Yik (Apple Experiment Station, NIHHS, R.D.A.) ;
  • Kwang, In-Kye (Division of Plant Biosciences, Kyungpook National University) ;
  • Hirst, Peter (Department of Horticulture and Landscape Architecture, Purdue University)
  • 전익조 (국립안동대학교 원예육종학과) ;
  • 정위위 (국립안동대학교 원예육종학과) ;
  • 최철 (경북대학교 원예과학과) ;
  • 송양익 (국립원예특작과학원 사과시험장) ;
  • 강인규 (경북대학교 원예과학과) ;
  • 피터 허스트 (퍼듀대학교 원예조경학과)
  • Received : 2010.10.23
  • Accepted : 2010.11.22
  • Published : 2012.12.31
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Abstract

The thinning effects of lime sulfur either alone or combined with fish oil on two apple cultivars 'Fuji'/M.9 and 'Hongro'/M.9 were investigated during two consecutive seasons. Either 1% or 2% lime sulfur at full bloom decreased the amounts of both terminal and axillary fruits compared with unsprayed 'Fuji' control trees in the first year. However, 1% or 2% lime sulfur did not decrease terminal fruit set in the second year. Only, triple applications of 1% lime sulfur significantly reduced the number of terminal and axillary fruits in both years. Multiple application of 1% lime sulfur was the most effective in thinning of 'Hongro'. In the first year, double or triple applications of 1% lime sulfur was effective in thinning terminal or axillary fruit, but one time applications of 1% or 2% lime sulfur was not reduced axillary fruit in 'Hongro' apple trees. In the second season, all treatments reduced terminal or axillary fruit in 'Hongro' clusters, except single application of 1% lime sulfur. Fish oil did not always improve the thinning effects of lime sulfur in 'Fuji' or 'Hongro' apple trees. None of treatments caused significant russeting in the harvested fruits. Most of thinning treatments had little effect on 'Fuji' or 'Hongro' fruit quality in terms of fruit weight, firmness, soluble solids concentration or titratable acidity.

본 연구는 2년간 '홍로'/M.9 및 '후지'/M.9 품종의 적과를 위한 석회유황합제 및 어유와의 혼합처리 효과를 조사하기 위해 진행하였다. '후지' 1년 차에 있어, 만개 시 석회유황합제 1% 또는 2% 처리는 대조구에 비해 정과 및 액과의 유과수를 감소시켰다. 하지만 2차년도에는 석회유황합제 1% 또는 2% 단용처리에서는 정과 유과수의 차이를 나타내지 않았다. 다만 석회유황합제 1%의 3회 처리에서는 1차년도와 2차년도 모두 유의적인 적과효과를 나타내었다. 석회유황합제 1%의 다중처리는 '홍로'에서 가장 효율적인 적과효과를 나타내었다. 1차년도의 경우, 석회유황합제 1%의 2회 또는 3회 살포가 효과적인 적과효과를 보였으며, 2차년도에서는 석회유황합제 1% 1회처리를 제외하고는 모두 유의적인 적과효과를 나타내었다. 첨가된 어유의 경우 대부분의 경우 석회유황합제의 적과효과를 강화하지 않았다. 본 시험에 사용된 모든 처리구는 과실의 동녹 형성에 악영향을 미치지 않았으며, 또한 '후지' 및 '홍로'의 과실 중량, 경도, 가용성고형물 및 적정산도와 같은 과실품질에 영향을 미치지 않았다.

Keywords

References

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