Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Effects of Photo/dark period and Relative Humidity during Dark Period on Growth and Tipburn Occurrence of Water Dropwort (Oenanthe stolonifera DC.) in a Closed-type Plant Factory

밀폐형 식물공장에서 명/암주기와 암기동안의 상대습도가 미나리 생육과 팁번 발생에 미치는 영향

  • An, Jae Uk (Horticultural Research Division, Gyeongsangnam-do Agricultural Research & Extension Services) ;
  • Joung, Kyoung Hee (Horticultural Research Division, Gyeongsangnam-do Agricultural Research & Extension Services) ;
  • Yoon, Hae Suk (Horticultural Research Division, Gyeongsangnam-do Agricultural Research & Extension Services) ;
  • Hwang, Yeon Hyeon (Horticultural Research Division, Gyeongsangnam-do Agricultural Research & Extension Services) ;
  • Hong, Gwang Pyo (Horticultural Research Division, Gyeongsangnam-do Agricultural Research & Extension Services)
  • Received : 2016.09.12
  • Accepted : 2017.04.26
  • Published : 2017.04.30
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Abstract

This research investigated the effect of photo/dark period and relative humidity during dark period on the growth and quality of water dropwort in a closed-type plant factory system. At 30 days after planting, the shoot fresh weight of water dropwort under relative humidity of 60/90%(light/dark) treatment significantly higher than that under relative humidity of 60/60% treatment. The shoot fresh weight of water dropwort increased by extending light period under relative humidity of 60/60% treatment, but 16/8h photo/dark period showed the best shoot fresh weight, followed by 20/4h and 22/2h under relative humidity of 60/90% treatment. In the relative humidity of 60/90% treatment, the tipburn occurrence was reduced under 16/8h photo/dark period condition as 1.4%, whereas it was significantly increased under 20/4h and 22/2h of relatively long light time duration as 15.5% and 30.3%, respectively. In the relative humidity of 60/60% treatment, the tipburn occurrence was 15.5% under 16/8h photo/dark period condition and those under 20/4h and 22/2h photo/dark period condition were higher than 25%. The stem hardness of water dropwort was lowest in relative humidity of 60/90% and 16/8h photo/dark period treatment. The mineral contents of leaves were decreased by extending light period, but the contents of Ca were not different significantly among the treatments except the 60/60% and 22/2h treatment.

본 연구는 식물공장에서 미나리 재배시 명/암주기와 암기시간 동안의 상대습도 조절이 미나리의 생육과 품질에 미치는 영향을 알아보고자 수행하였다. 정식 후 30일째에 수확하여 생육 및 품질을 비교하였을 때 상대습도 60/90%(명/암기) 처리가 60/60% 처리보다 지상부 생체중이 뚜렷이 증가하였다. 상대습도60/60% 처리에서 명기가 연장될수록 지상부 생체중이 증가하였지만 60/90% 처리에서는 16/8h 처리에서 지상부 생체중이 가장 높았으며, 20/4h, 22/2h 순이었다. 팁번의 발생은 상대습도 60/90%에서는 명/암주기 16/8h로 처리했을 때 1.4%로 매우 낮았으나, 명기 시간이 연장된20/4h, 22/2h 처리에서 각각 15.5% 30.3%로 급격히 증가하였다. 상대습도 60/60%에서는 명/암주기 16/8h에서도 팁번의 발생이 15.5%로 높았으며 20/4h, 22/2h 처리에서는 25% 이상 높게 나왔다. 줄기의 경도는 상대습도 60/90%, 명/암주기 16/8h 처리에서 가장 낮았다. 잎의 무기성분은 명기시간이 연장될수록 감소하였지만 Ca의 함량은 상대습도 60/60%, 명/암주기 22/2h 처리를 제외하고는 유의한 차이가 없었다.

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References

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