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Effect of Supplemental Lighting on Temperature and Humidity in Greenhouse and the Growth of Cut Roses

보광이 온실내 온습도와 절화장미의 생육에 미치는 영향

  • Kwon, O Hyeon (Floriculture Division, National Institute of Horticultural & Herbal Science) ;
  • Kim, Won Hee (Floriculture Division, National Institute of Horticultural & Herbal Science) ;
  • Lee, Su Young (Floriculture Division, National Institute of Horticultural & Herbal Science) ;
  • Lee, Hye Jin (Floriculture Division, National Institute of Horticultural & Herbal Science) ;
  • Cheon, Kyeong Seong (Floriculture Division, National Institute of Horticultural & Herbal Science) ;
  • Kim, Wan Soon (Department of Environmental Horticulture, University of Seoul)
  • 권오현 (국립원예특작과학원 화훼과) ;
  • 김원희 (국립원예특작과학원 화훼과) ;
  • 이수영 (국립원예특작과학원 화훼과) ;
  • 이혜진 (국립원예특작과학원 화훼과) ;
  • 천경성 (국립원예특작과학원 화훼과) ;
  • 김완순 (서울시립대학교 환경원예학과)
  • Received : 2014.04.10
  • Accepted : 2014.09.25
  • Published : 2014.09.30

Abstract

In domestic production of cut-flower roses, the lack of light and low temperature in winter time reduces the production and deteriorates the product quality. For this reason, 400W of high-pressure sodium were supplemented to 'Charming Black' and 'Pinky Girl' of cut-flower roses for 4 hours, 8 hours and 12 hours each after sunset. During supplemental lighting, the lighting intensity was about $35{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$. When high-pressure sodium was supplemented, the temperature inside of green house went up by 2~4 and humidity went down by 15~20%. The temperature rise and humidity drop caused by supplemental lighting of high-pressure sodium had an effect of suppressing downy mildew. The longer of time supplemental lighting, lowered the occurrence rate of downy mildew. The downy mildew in 'Charming Black' and 'Pinky Girl' was suppressed one hundred percent after staying in supplemental lighting treatment plot for more than 8 hours and 12 hours respectively. In cut-flower roses, longer supplemental lighting time after sunset, resulted higher flower production. The length of cut-flower got longer when the supplemental lighting was executed and there was significant difference by the time of supplemental lighting.

국내에서 절화장미의 생산에 있어서, 겨울철 부족한 광량과 저온은 생산량을 감소시키고 품질을 저하시킨다. 이에 일몰 후 고압나트륨등을 보광하여 생산량을 증가하고 품질을 향상하기 위해 시험을 수행하였다. 절화장미 '챠밍블랙', '핑키걸' 품종을 사용하였으며 400W의 고압나트룸등을 이용해 $35{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$의 광을 일몰 후 18시부터 4시간, 8시간, 12시간을 보광하였다. 고압나트륨등을 보광 하였을 때 온실내의 온도는 $2{\sim}4^{\circ}C$가 상승하였고, 습도는 15~20%가 하락하였다. 고압나트륨 보광에 의한 온도의 상승과 습도의 하락은 절화장미 재배에서 노균병 발생을 억제하는 효과가 있었다. 보광시간이 길어질수록 절화장미의 노균병 발생율이 감소하였다. '챠밍블랙'은 8시간 이상의 보광처리구에서, '핑키걸'은 12시간 보광 시 노균병이 100% 억제되었다. 절화장미에서 일몰 후 보광시간이 길어질수록 블라인드의 발생률은 감소하였으나 생산량은 8시간 보광을 실시한 처리구에서 가장 많았다. 절화장미의 절화장은 보광을 실시하였을 때 길어졌으며, 보광시간별 유의한 차이는 없었다.

Keywords

References

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  2. 보광등과 난방등이 절화장미 수확량, 절화수명, 엽색에 미치는 영향 vol.27, pp.2, 2018, https://doi.org/10.12791/ksbec.2018.27.2.158