Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Changes of Plant Growth and Nutrient Concentrations of the Drainage According to Drainage Reuse and Substrate Type in Sweet Pepper Hydroponics

파프리카 수경재배 시 배액 재사용과 배지 종류에 따른 생육 및 배액 내 이온 농도 변화

  • Lim, Mi Young (Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science) ;
  • Jeong, Eun Seol (Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science) ;
  • Roh, Mi Young (Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science) ;
  • Choi, Gyeong Lee (Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science) ;
  • Kim, So Hui (Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science) ;
  • Lee, Choung Keun (Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science)
  • 임미영 (국립원예특작과학원 시설원예연구소) ;
  • 정은설 (국립원예특작과학원 시설원예연구소) ;
  • 노미영 (국립원예특작과학원 시설원예연구소) ;
  • 최경이 (국립원예특작과학원 시설원예연구소) ;
  • 김소희 (국립원예특작과학원 시설원예연구소) ;
  • 이충근 (국립원예특작과학원 시설원예연구소)
  • Received : 2022.09.06
  • Accepted : 2022.10.31
  • Published : 2022.10.31
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Abstract

This study was conducted to investigate the effect of closed cultivation and open cultivation method and substrate type on the nutrient ion change pattern and growth of sweet pepper (Capsicum annuum L.) 'Scirocco' according to the reuse of drainage in hydroponics. The sowing, transplanting, and application of the closed and open cultivation method were carried out on August 19 and September 16, and October 21, 2021, respectively. As a result of the analysis of nutrients in the drainage, Na+ and Cl- are representative ions that crops do not absorb properly, and as the growth progresses, they are accumulated in the closed method. In addition, since the content of NH4-N in the drainage is significantly lower than that of NO3-N, it is thought that NH4-N is preferentially absorbed rather than NO3-N due to the ion selectivity of sweet pepper. The growth and fruit characteristics of sweet pepper did not differ significantly between treatments according to the drainage reuse and the type of substrate. In conclusion, if you take care of poor fruiting due to the weakening of power after the middle period in hydroponic cultivation of sweet pepper according to the cultivation method of closed and open, and the substrate type of coir and rock wool, the difference between treatments is not large, so the sweet pepper can be produced by selecting the cultivation methods and substrate types suitable for the conditions of grower. However, as interest in environmental pollution has recently increased, it is judged that there is no need to worry about a decrease in quantity or quality, even if a closed cultivation method is adopted under the assumption that pathogen infection due to drainage reuse is well managed. It is expected that if coir is applied instead of rock wool, which causes a problem of disposal, it will further contribute to the reduction of environmental pollution.

본 연구에서는 파프리카(Capsicum annuum L.) 'Scirocco' 품종 수경재배 시 배액 재사용 여부에 따른 순환식 재배와 비순환식 재배 및 배지 종류가 배액의 양분 이온 변화 양상과 생육에 미치는 영향을 조사하였다. 파프리카의 파종은 2021년 8월 19일에, 정식은 2021년 9월 16일, 순환식 및 비순환식의 재배 방식 적용은 2021년 10월 21일에 시행하였다. 배액 내 양분 분석 결과, Na+와 Cl-은 작물이 제대로 흡수하지 않는 대표적은 이온으로써 생육이 진전될수록 순환식 재배방식에서 집적되었다. 또한 배액 내 NH4-N의 함량이 NO3-N의 함량에 비해 현저히 낮으므로 파프리카의 이온 선택성으로 인해 NO3-N보다 NH4-N이 우선 흡수되는 것으로 생각된다. 파프리카의 생육 및 과실 특성은 배액 재사용 여부와 배지의 종류에 따른 처리 간의 차이가 크지 않았다. 결론적으로 순환식과 비순환식의 수경재배 방식, 코이어와 암면의 배지 종류에 따른 파프리카 수경 재배 시 중기 이후의 세력약화로 인한 착과 불량을 유의하여 관리한다면 처리 간의 차이가 크지 않으므로 농가의 실정에 맞는 재배 방식과 배지를 선택하여 파프리카를 생산할 수 있을 것으로 생각된다. 다만 최근 환경오염에 대한 관심이 높아진 만큼 배액 재사용에 따른 병원균 감염 등을 잘 관리한다는 가정 하에서 순환식 재배 방식을 채택해도 수량 감소나 품질 저하 등은 우려하지 않아도 될 것이라 판단되며, 폐기 문제가 발생하는 암면 대신 코이어 배지를 선택한다면 더욱 환경오염 감소에 기여할 수 있으리라 기대된다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 연구사업(과제번호: PJ01604802)의 지원에 의해 수행되었음.

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