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메기(Silurus asotus) 양어 순환식 아쿠아포닉스와 수경재배 엽채류의 생육 및 수질의 비교

Comparison of Water Quality and Growth on Leafy Vegetables in Far Eastern Catfish (Silurus asotus) Aquaponics and Hydroponic Culture

  • 김민정 (국립농업과학원 유기농업과) ;
  • 심창기 (국립농업과학원 유기농업과) ;
  • 박원성 (국립농업과학원 유기농업과) ;
  • 이재형 (국립농업과학원 유기농업과) ;
  • 허정욱 (국립농업과학원 스마트팜개발과)
  • Min-Jeong Kim (Organic Agricultural Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Chang-Ki Shim (Organic Agricultural Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • One-Seong Park (Organic Agricultural Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Jae-Hyeong Lee (Organic Agricultural Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Jeong-Wook Heo (Smart Farm Development Division, National Institute of Agricultural Sciences, Rural Development Administration)
  • 투고 : 2023.12.05
  • 심사 : 2023.12.20
  • 발행 : 2023.12.31

초록

This study aimed to investigate the effects of an aquaponics system utilizing catfish recirculating water on the growth and water quality in lettuce and chicory cultivation. After 60 d of catfish cultivation in the BFT-AP, the survival rate was 96.0% and average weight gain was 178.5 g. The WGR grew by 241.4% and the SGR was 3.0%. A comparison between lettuce and chicory cultivation using BFT-AP and hydroponics revealed significant increases in shoot height, leaf count per week, and biomass of the cultivated lettuce and chicory. The SPAD values also increased significantly by 15.4-43.3%. Water quality analysis of the BFT-AP systems and crop cultivation beds showed significant differences, except for K and Na. The average NO3- concentration in the sediment pond was significantly higher at 45.3±1.0. Comparison of water temperature, pH, EC, DO, and ORP in the BFT-AP system and crop cultivation beds revealed similar monthly water temperatures from July to September. The pH in the catfish culture pond was 0.3-1.2 lower than that in the crop cultivation beds, and the EC was approximately 0.01- 0.03 dS/m lower in the catfish culture pond than the crop cultivation beds. The monthly average ORP in the catfish culture bed steadily increased to 479.9 mV in October. Bacillus velezensis (AFB2-2) and Chlorella fusca (CF) were applied to the biological activation bed; the population density of CF showed a continuous increase, whereas that of AFB2-2 decreased after 15 d and gradually increased thereafter. Thus, the application of the recirculating aquaponics cultivation technology with catfish (BFT) enhances catfish cultivation and promotes the growth of lettuce and chicory. Therefore, it is considered suitable for the environment-friendly cultivation of lettuce and chicory.

키워드

과제정보

This study was funded by a research program (PJ015796) of Rural Development Administration (RDA), Republic of Korea.

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