Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Comparison of Flower Thinning Efficiency of Lime-sulfur on Korean Major Pear (Pyrus pyrifolia Nakai) Cultivars

석회유황합제 처리에 의한 국내 주요 배 품종별 적화 반응 비교

  • Byeong Hyeon Yun (Fruit Research Division, National Institute of Horticultural & Herbal Science) ;
  • Ji Hae Jun (Fruit Research Division, National Institute of Horticultural & Herbal Science) ;
  • Il-Sheob Shin (Pear Research Institute, National Institute of Horticultural & Herbal Science) ;
  • Hyun Ran Kim (Fruit Research Division, National Institute of Horticultural & Herbal Science) ;
  • Kang Hee Cho (R&D Planning Division, Rural Development Administration) ;
  • Jae Hoon Jeong (Fruit Research Division, National Institute of Horticultural & Herbal Science) ;
  • Se Hee Kim (Fruit Research Division, National Institute of Horticultural & Herbal Science) ;
  • Sang-Yun Cho (Fruit Research Division, National Institute of Horticultural & Herbal Science) ;
  • Sewon Oh (Fruit Research Division, National Institute of Horticultural & Herbal Science)
  • 윤병현 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 전지혜 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 신일섭 (농촌진흥청 국립원예특작과학원 배연구소) ;
  • 김현란 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 조강희 (농촌진흥청 연구정책국 연구개발과) ;
  • 정재훈 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 김세희 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 조상윤 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 오세원 (농촌진흥청 국립원예특작과학원 과수과)
  • Received : 2023.08.18
  • Accepted : 2023.12.14
  • Published : 2024.02.01
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Abstract

Fruit thinning rate and characteristics were investigated for three years on seven promising pear (Pyrus pyrifolia Nakai) cultivars, which were treated by lime-sulfur as an eco-chemical thinning substance. Lime-sulfur was treated twice at the second and third days after full bloom by cultivar. Most of pear cultivars were significantly thinned by lime-sulfur compounds. Especially 'Whangkeumbae', 'Supergold' and 'Hanareum' exhibited high flower thinning rates, 41.5%, 40.1% and 39.9%, respectively. As weather conditions at the lime-sulfur treatment, insolation and cloud amount were correlated with flower thinning rate but not significant (r = 0.49 and r = -0.45, respectively). These results suggest that lime-sulfur is suitable for reducing labor force for flower thinning of Korean pears but flower thinning effects of lime-sulfur can vary depending on other factors such as environmental conditions. This information will provide useful data for low labor force cultivation of Korean pear cultivars.

주요 유망 배 7 품종(Pyrus pyrifolia Nakai)을 대상으로 적화제로서 석회유황합제의 효과를 검증하고, 품종별 적용 가능성을 판단하고자 3년에 걸쳐 적과율 및 과실 특성을 조사하였다. 석회유황합제 100배액을 만들어 만개 후 2일과 3일째에 총 2회 처리하였다. 적과율 조사 결과, 대부분의 국내 주요 배 품종에서 석회유황합제 처리에 의해 유의미한 적화효과를 나타냈고, 특히 '황금배'가 41.5%로 가장 큰 적화 효과를 나타냈고 '슈퍼골드' 40.1%, '한아름' 39.9% 순으로 높은 효율을 보였다. 당시 기상 조건과 실험 결과 간의 관계를 파악하기 위해 약제 처리 시점의 기상정보와 약제 적화효율의 연관성을 조사해본 결과 평균 일사량과 +0.49 수준의 약한 정적 상관관계, 평균 운량(구름양)과 -0.45의 약한 부적 상관관계를 나타냈다. 과실 품질과 약해 증상에서도 전반적으로 모든 자원이 통계적 유의차를 보이지 않았고, 일관된 특이사항은 발견되지 않았다. 결과적으로 적화 노력 감소 및 생력재배를 위한 석회유황합제 활용의 적합성을 확인할 수 있었다. 그러나 실제 적화제의 사용 시 생력재배의 성공 여부는 정확한 처리 시점, 처리 시점의 환경 등 다른 요인으로 인해 크게 영향을 미칠것으로 보인다. 이러한 결과는 국내 배 품종별 재배 생력화를 위한 중요한 기초자료가 될 것이다.

Keywords

Acknowledgement

본 결과물은 농촌진흥청 연구과제(세부과제번호: PJ01448301)의 지원을 받아 연구되었음.

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