Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Leaf Mineral Contents and Growth Characteristics of Strawberry Grown in Aquaponic System with Different Growing Media in a Plant Factory

식물공장형 아쿠아포닉스 시스템에서 배지 종류에 따른 딸기 잎의 무기이온 함량과 생육 특성

  • Su-Hyun Choi (Department of Agriculture and Life Science, Korea National Open University) ;
  • Min-Kyung Kim (Department of Agriculture and Life Science, Korea National Open University) ;
  • Young-Ae Jeong (Department of Agriculture and Life Science, Korea National Open University) ;
  • Seo-A Yoon (Department of Agriculture and Life Science, Korea National Open University) ;
  • Eun-Young Choi (Department of Agriculture and Life Science, Korea National Open University)
  • 최수현 (한국방송통신대학교 대학원 농업생명과학과) ;
  • 김민경 (한국방송통신대학교 대학원 농업생명과학과) ;
  • 정영애 (한국방송통신대학교 대학원 농업생명과학과) ;
  • 윤서아 (한국방송통신대학교 대학원 농업생명과학과) ;
  • 최은영 (한국방송통신대학교 대학원 농업생명과학과)
  • Received : 2023.01.24
  • Accepted : 2023.04.17
  • Published : 2023.04.30
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Abstract

This study was aimed to determine the effects of grow media on the mineral contents of the leaves and growth characteristics of strawberry grown under aquaponics system in a plant factory. For aquaculture, 12 fish (Cyprinus carpio) (total weight, 2.0 kg) were raised in an aquaponics tank (W 0.7 m × L 1.5 m × H 0.45 m, 472.5 L) filled with 367.5 L of water at a density of 5.44 kg·m-3 and total 34 of strawberry seedlings were transplanted in the pots filed with 200 g of orchid stone, hydroball or polyurethane sponge in the growing bed (W 0.7 m × L 1.5 m × H 0.22 m) laid out with holly acrylic sheet (140×60 mm, Ø80) on the top of the system. The pH and EC of the aquaponic solution was ranged from 7.6 to 4.9 and 0.24-0.91 dS·m-1, respectively. The concentration of NO3-N was about 28% lower than that of the hydroponic standard solution, and K, Fe and B were 10, 27 and 3.8 times lower, respectively; however, the mineral contents of strawberry leaves were in the appropriate ranges with lower contents in the leaves grown with sponge media. The organic content (OM), nitrogen (N), phosphorus (P), and potassium (K) of the sludge were 61.5, 5.72, 8.92, and 0.24%, respectively. The leaf area, leaf number, and dry and fresh weights of shoot at 81 DAT were significantly higher in the hydroball, and the average number of fruits per plant was significantly higher in both the orchid stone and hydroball. There was no significant difference in the fresh and dry weights of fruits. Integrated all the results suggest that the orchid stone and hydroball media are more effective to utilize nutrients in solid particles of aquaponic solution, compared to the polyurethane sponge.

본 연구는 식물공장형 아쿠아포닉스 시스템에서 배지 종류에 따른 딸기 잎의 무기이온 함량과 생육 특성을 관찰하고자 수행되었다. 양어는 비단잉어(Cyprinus carpio) 12마리(총어체중, 2.0kg)를 수조(W 0.7m × L 1.5m × H 0.45m, 472.5L)에 367.5L 물을 채운 후 입식하였고 5.44kg·m-3 밀도로 사육하고 딸기 모종 34개체는 시스템 상단의 재배 베드(W 0.7m × L 1.5m × H 0.22m)에 구멍을 낸 아크릴판(140×60mm, Ø80)을 설치하고 난석, 하이드로볼 그리고 폴리우레탄 스폰지를 채운 네트포트에 정식하였다. 재배기간 동안 수조액의 pH는 4.9-7.6, EC는 0.24-0.91dS·m-1 범위를 보였다. 수조액의 NO3-N은 수경재배 표준 배양액보다 약28% 낮고 K, Fe, B은 각각10배, 27배, 3.8배 낮았으나 딸기 잎의 무기이온 함량은 적정 수준을 보였으며 스펀지 처리구에서 난석과 하이드로볼 처리구보다 낮았다. 수조액 슬러지의 유기물 함량(OM), 질소(N), 인(P), 칼륨(K)의 함량이 각각61.5, 5.72, 8.92, 0.24%였다. 정식 후 81DAT에 측정된 엽면적, 엽수, 지상부 생체중과 건물중은 하이드로볼 처리에서 유의적으로 높았고, 개체당평균 과실수는 난석과 하이드로볼에서 스펀지보다 유의적으로 많았지만 과실 생체중과 건물중은 처리별 유의차가 없었다. 본 연구의 결과를 종합해보면, 아쿠아포닉 시스템에서 난석이나 하이드로볼 배지는 폴리우레탄 스펀지보다 수조액의 슬러지 비료성분을 가용화하는 데 효율적인 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 한국방송통신대학교 교내 연구비(2022년도) 지원을 받아 수행되었음.

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