Horticulture, Environment, and Biotechnology : HEB

Korean Society of Horticultural Science (한국원예학회)
권호 표지

Hydroponic Culture of a Pot Plant Ficus benjamina 'King' Using Mixtures of Used Rockwool Slab Particles and Chestnut Woodchips

폐암면과 밤나무 입자 혼합 배지를 이용한 Ficus benjamina 'King' 분식물의 양액 재배

Kim, Gyeong-Hee;Jeong, Byoung-Ryong
김경희;정병룡

  • Published : 20030000
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Abstract

This study was carried out to establish a subirrigational hydroponic system for a foliage pot plant Ficus benjamina ‘King’ and to examine the reusability of the growing medium resources such as woodchips and rockwool slabs ejected from hydroponic cultures. Hydroponic solution was fed through a subirrigational mat system. The used rockwool, chestnut woodchips, perlite, and peatmoss were mixed at various volume ratios to make 20 different mixture combinations. pH of the medium decreased with the increase of chestnut woodchips. It changed to pH 7 if used rockwool slabs was added. pHs of all the media after use for plant culture were higher than those of the media before use. Electrical conductivity of the control, Tosilee medium, was the highest and it decreased after plant culture. There was no change in electrical conductivity of particles of used rockwool slabs before and after plant culture. Plant growth and development except root length and total chlorophyll concentration were promoted in the 100% particles of used rockwool slabs as compared with those in the control. Therefore, it is concluded that the used rockwool slabs ejected from hydroponic cultures were reusable for the hydroponic culture, and the most effective mixture for the growth of F. benjamina ‘King’ was the 75% particles of used rockwool slabs combined with 25% peatmoss (v/v).

본 연구는 양액 재배용 배지로서 농업 부산물인 폐암면 슬래브 입자와 밤나무 입자의 사용 가능성을 알아보고 이를 이용한 Ficus benjamina ‘King’의 양액 재배용 배지 개발을 목표로 수행하였다. 매트 저면 관수로 급액하였고 폐암면 슬래브 입자, 밤나무 입자, 펄라이트, 그리고 피트모스를 다양한 부피비로 혼합한 20가지 배지를 3반복 난괴법으로 배치하여 재배하였다. 배지의 pH는 산성인 밤나무 입자가 많이 함유될수록 낮아지나 폐암면 슬래브 입자를 첨가할수록 중성에 가까워졌다. 재배 전보다 재배 후 모든 배지에서 pH가 상승하였다. 대조구인 토실이 배지는 사용 전에 모든 처리 중에서 EC가 가장 높았으나 재배 후 유일하게 낮아졌다. 폐암면 슬래브 입자의 경우 재배 전과 재배 후의 EC 변화가 거의 없는 것으로 보아 실험 전의 작물 재배 시 공급된 비료 성분이 잔류했기 때문으로 생각된다. 근장과 총 엽록소 함량을 제외한 모든 생육 조사 항목에서 폐암면 슬래브 입자 100% 처리에서 대조구인 토실이 배지에서보다 생육이 좋은 것으로 보아 폐암면 슬래브의 재활용 가능성이 입증되었다. 폐암면 슬래브 입자와 피트모스를 3:1의 부피비로 혼합한 처리에서 생육이 가장 좋았다.

Keywords

References

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