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2025 Vol.34, Issue 4 Preview Page

Original Articles

Effects of Biochar-Based Mixed Substrates for Hydroponics on Growth and Yield of Cherry Tomato

수경재배용 바이오차 혼합 배지가 방울토마토의 생육 및 수량에 미치는 영향

Ji Seung Pyo14
,
Seung Yeon Lee1
,
Jeong Ho Ahn1
,
Hyundong Jang2
,
Yeo Uk Yun3
,
Sung Chul Kim5*
표 지승14
,
이 승연1
,
안 정호1
,
장 현동2
,
윤 여욱3
,
김 성철5*
1Researcher, Fruit Vegetable Research Institute, Chungcheongnam-do Agricultural Research and Extension Services, Buyeo 33119, Korea
2Senior Researcher, Fruit Vegetable Research Institute, Chungcheongnam-do Agricultural Research and Extension Services, Buyeo 33119, Korea
3Researcher, Environmentally-Friendly Agriculture Division, Chungcheongnam-do Agricultural Research and Extension Services, Yesan 32418, Korea
4Graduate Student, Bio Environmental Chemistry, College of Agriculture & Life sciences, Chungnam National University, Daejeon 34134, Korea
5Professor, Bio Environmental Chemistry, College of Agriculture & Life sciences, Chungnam National University, Daejeon 34134, Korea
1충남농업기술원 과채연구소 연구사
2충남농업기술원 과채연구소 연구관
3충남농업기술원 농업환경연구과 연구사
4충남대학교 농업생명과학대학 생물환경화학과 대학원생
5충남대학교 농업생명과학대학 생물환경화학과 교수
*Corresponding Author
†These authors contributed equally to this work.
31 October 2025. pp. 410-419
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Abstract

This study evaluated the effects of biochar-based mixed substrates on the growth, yield, and fruit quality of cherry tomato (Solanum lycopersicum) and evaluated their potential as an alternative to conventional coir substrates. Five treatments were established: coir dust (T1, control) and four biochar-based mixtures with varying ratios of biochar, peatmoss, and perlite (T2: 3:7:0, T3: 3:0:7, T4: 1:1:1, T5: 2:1:1). Plant growth parameters (plant height, stem diameter, leaf length, leaf width, leaf number, and inflorescence number), substrate physicochemical properties, drainage pH and EC, yield, and fruit quality were measured. Coir (T1) exhibited greater water retention, while the mixed substrates had higher porosity and lower bulk density, enhancing aeration. Heavy metal concentrations in all substrates were below fertilizer regulation thresholds, ensuring safety. Drainage EC gradually increased during the late growth stage across all treatments, likely due to salt accumulation, but remained within acceptable limits. All biochar-based substrates produced equal or higher total and marketable yields compared to coir dust, while fruit quality did not differ significantly among treatments. There result demonstrate that biochar, peatmoss, perlite mixtures are feasible substitute for replacing imported coir offering a sustainable cultivation model that promote resource recycling and low-carbon horticulture.

Keywords
biochar-based substrate
cocopeat alternative
low-carbon agriculture

본 연구는 바이오차 기반 혼합 배지가 방울토마토(Solanum lycopersicum)의 생육, 수량 및 과품질에 미치는 영향을 평가하고, 기존 코크피트(코이어) 배지를 대체할 수 있는 가능성을 검토하기 위해 수행되었다. 처리구는 코이어 단용구(T1)와 함께, 바이오차:피트모스:펄라이트의 혼합비를 달리한 네 가지 혼합 배지(T2: 3:7:0, T3: 3:0:7, T4: 1:1:1, T5: 2:1:1)를 구성하였다. 주요 생육 지표(초장, 경경, 엽장, 엽폭, 엽수, 화방수), 배지의 이화학성, 배액의 pH 및 EC, 수량, 과품질을 조사하였다. 그 결과 코이어 배지(T1)는 높은 보수력을 보였으나, 바이오차 혼합배지는 높은 공극률과 낮은 용적밀도를 나타내어 통기성이 향상되었다. 모든 배지에서 중금속 함량은 비료 공정 규격 기준치 이하로 안전성이 확보되었다. 생육 후기로 갈수록 배액 EC가 점진적으로 증가하였으나, 이는 염류 축적에 기인한 것으로 판단되며, 허용 범위 내에서 안정적으로 유지되었다. 바이오차 기반 혼합배지는 코코피트에 비해 동등하거나 더 높은 총수량 및 상품수량을 보였으며, 과실 품질 특성은 처리 간 유의차가 나타나지 않았다. 따라서 본 연구 결과는 바이오차·피트모스·펄라이트 혼합배지가 수입 코코피트를 대체할 수 있는 수경재배용 배지로서 활용 가능성이 높으며, 자원순환과 저탄소 농업을 촉진하는 지속가능한 재배 모델을 제시함을 보여준다.

키워드
바이오차 기반 배지
저탄소 농업
코크피트 대체
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Journal of Bio-Environment Control
  • Journal Title(Ko) :생물환경조절학회지
  • Volume : 34
  • No :4
  • Pages :410-419
  • Received Date : 2025-09-09
  • Revised Date : 2025-10-06
  • Accepted Date : 2025-10-09
  • DOI :https://doi.org/10.12791/KSBEC.2025.34.4.410
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