Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Growth and Fruit Characteristics and Working Time of 'Duke' Highbush Blueberry by Shrub Distance

주간 거리에 따른 하이부쉬블루베리 'Duke' 품종의 수체 생육, 과실 특성, 작업 시간

  • 김수진 (국립원예특작과학원 과수과) ;
  • 이동훈 (국립원예특작과학원 과수과) ;
  • 허윤영 (국립원예특작과학원 과수과) ;
  • 임동준 (국립원예특작과학원 과수과) ;
  • 박서준 (국립원예특작과학원)
  • Received : 2020.09.11
  • Accepted : 2020.12.09
  • Published : 2021.02.27
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Abstract

Shrub growth and fruit characteristics and working time of 'Duke' blueberry by shrub distance were investigated. Overapping rate of blueberry crown was 109% in 0.6 m shrub distance, 37% in 1.2 m shrub distance, and -88% in 2.4 m shrub distance, respectively. The number of main stem tended to increase as the shrub spacing widened. The other fruit characteristics, except for the fruit weight, did not show any significantly different according to the shrub distance. The yield per 10 a was 2,097 kg for 0.6 m shrub distance, 1,303 kg for 1.2 m shrub distance, and 710.7 kg for 2.4 m shrub distance in 2019, respectively. Total working time was 154 hr for 0.6 m shrub distance, 114 hr for 1.2 m shrub distance, and 74 hr for 2.4 m shrub distance. Therefore, the blueberry shrub distance was judged to be appropriate about 1.2 m in the long-termly. However, in order to increase yield early and income, the shrub can maintain 0.6 m distance during young shrub, it can managed flexibly to 1.2 m distance when it becomes a mature shrub.

블루베리 조생종 'Duke'의 주간 거리에 따른 수체 생육, 과실 특성, 수확량 및 작업 시간 등을 조사하였다. 수관이 겹치는 비율이 재식 5년차인 0.6 m 주간 거리에서 109%, 1.2 m 주간 거리에서는 37%로 주간 거리가 좁을수록 수관이 겹치는 양상이 심하였다. 주축지 수는 0.6 m와 1.2 m 주간 거리에 비해 2.4 m 간격에서 많은 것으로 나타났다. 과실 특성 중 과중은 2.4 m 주간 거리 처리구에서 가장 높게 나타났다. 당도, 산도, 경도와 같은 다른 과실 특성은 예상대로 주간 거리별로 통계적으로 유의한 차이가 나타나지 않았다. 수확량은 연차별로 큰 차이 없이 0.6 m > 1.2 m > 2.4 m 주간 거리순이었으며 재식 5년차인 2019년에는 10a 당 수확량이 0.6 m의 경우 2,097 kg, 1.2 m의 경우 1,303 kg, 2.4 m의 경우 710.7 kg로 나타났다. 총 작업 시간은 0.6 m 주간 거리의 경우 154시간이었으며 1.2 m 주간 거리는 약 114시간(0.6 m 간격의 74%), 2.4 m 주간 거리는 약 74시간(0.6 m 간격의 48%)이었다. 따라서 장기적으로는 주간 거리 1.2 m가 블루베리 재배 시 가장 적합한 것으로 나타났다. 그러나 조기에 수확량을 늘려 소득 증진을 위해서는 유목기에는 0.6 m 간격으로 유지하다 성목기에 이르러 1.2 m 간격으로 조성하는 계획적 밀식 방법으로 유동적으로 관리할 수 있다.

Keywords

Acknowledgement

본 논문은 농촌진흥청 연구사업(세부과제번호: PJ01127302)의 지원에 의해 이루어진 것임

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