Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Effects of Environmental Substrate Composition on the Growth and Yield of Hydroponically Grown Tomato

토마토 양액재배시 배지 환경조성이 생육 및 생산성에 미치는 영향

  • Lee, Jaesu (Division of Smart Farm Development, National Institute of Agricultural Science, RDA) ;
  • Lee, Hyundong (Division of Smart Farm Development, National Institute of Agricultural Science, RDA) ;
  • Lee, Sanggyu (Division of Smart Farm Development, National Institute of Agricultural Science, RDA) ;
  • Kwak, Kangsu (Division of Smart Farm Development, National Institute of Agricultural Science, RDA) ;
  • Kim, Balgeum (Division of Smart Farm Development, National Institute of Agricultural Science, RDA) ;
  • Kim, Taehyun (Division of Smart Farm Development, National Institute of Agricultural Science, RDA) ;
  • Baek, Jeonghyun (Division of Smart Farm Development, National Institute of Agricultural Science, RDA) ;
  • Rho, Siyoung (Division of Smart Farm Development, National Institute of Agricultural Science, RDA) ;
  • Hong, Youngsin (Division of Smart Farm Development, National Institute of Agricultural Science, RDA)
  • 이재수 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 이현동 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 이상규 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 곽강수 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 김밝금 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 김태현 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 백정현 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 노시영 (농촌진흥청 국립농업과학원 스마트팜개발과) ;
  • 홍영신 (농촌진흥청 국립농업과학원 스마트팜개발과)
  • Received : 2019.06.28
  • Accepted : 2019.08.26
  • Published : 2019.09.30
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Abstract

The aim of this study was to determine the effects of different compositions of environmental substrates on hydroponic tomato cultivation. Three different substrates were used in coir chip:dust (v/v=50:50; CP1), coir chip:dust (v/v=80:20; CP2), and rock wool cube with CP2 (CPR). The amount of irrigation during the cultivation period was 190 mL/(plant time) in all substrates. The pH and EC were 5.8-6.2 and 2.6-2.9 dS/m, respectively. The drainage rate in CP1 was 31%, in CP2 was 36%, and in CPR was 29%. The growth of tomato plants in terms of height was higher in CP1 and CPR. The leaf area was greater in CP2. The fresh and dry weights were greater in CP2 and CPR treatments. The net photosynthesis in CP2 ($19.31{\mu}mol\;CO_2/m^2s$) and root activity in CP2 were higher among all three treatments. The soluble solid content of fruit was not significantly different among treatments. The yield per plant in CP2 and CPR treatments was 17% greater than the yield per plant in CP1. Therefore, the most suitable substrate for hydroponic tomato cultivation is the substrate mixed with coir chip:dust (v:v=80:20; CP2), i.e., CPR.

Keywords

References

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