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Effect of Mist Treatment on the Growth and Quality of Cut Rose 'Hanmaum' during Summer

여름철 미스트 처리가 절화 장미 '한마음'의 생육과 품질에 미치는 영향

  • Chon, Young Shin (Department of Horticultural Science, Gyeongnam National University of Science and Technology) ;
  • Ha, Su Hyeon (Department of Horticultural Science, Gyeongnam National University of Science and Technology) ;
  • Jeong, Kyeong Jin (Department of Horticultural Science, Gyeongnam National University of Science and Technology) ;
  • Choi, Kyoung Ok (Department of Horticultural Science, Gyeongnam National University of Science and Technology) ;
  • Yun, Jae Gill (Department of Horticultural Science, Gyeongnam National University of Science and Technology)
  • 천영신 (경남과학기술대학교 원예학과) ;
  • 하수현 (경남과학기술대학교 원예학과) ;
  • 정경진 (경남과학기술대학교 원예학과) ;
  • 최경옥 (경남과학기술대학교 원예학과) ;
  • 윤재길 (경남과학기술대학교 원예학과)
  • Received : 2013.04.02
  • Accepted : 2013.05.15
  • Published : 2013.09.30

Abstract

During summer in Korea, the excessively high temperature causes growth retardation and quality reduction in cut roses grown in greenhouse. Mist treatments were conducted to reduce the temperature and avoid quality reduction of cut roses. The temperature change in the greenhouse, growth and quality of cut roses, and injuries caused by insects or fungi were investigated during mist treatment. Daily maximum temperature reduced as the number of mist treatment increased, resulting in $6^{\circ}C$ reduction by mist treatment for 10 seconds at 5 min interval. This temperature reduction occurred only when maximum temperature was over $40^{\circ}C$ in greenhouse, and not when it was less than $40^{\circ}C$ or rainy and/or cloudy day. Plant height and fresh weight of the cut roses were increased at the range of 10-20% by mist treatment. As frequency of mist treatment increased, however, malformed flowers increased and vase life of cut rose was largely shortened. The injuries by insects like as beet armyworm larvae and scale insect increased as well. In conclusion, it is recommended that mist treatment must be used when the daily maximum temperature in a green house is over $40^{\circ}C$ and forecasting for disease or insects should be conducted as well.

여름철 절화 장미 재배 시 고온으로 인한 품질저하를 방지할 목적으로 분무기를 설치하여 기온의 변화와 절화 장미의 품질 및 병충해 발생 정도를 조사하였다. 그 결과, 분무처리 횟수가 증가할수록 일일 최고 온도가 떨어지는 효과가 있었으며, 5분 간격으로 10초간 처리했을 때 최고온도를 $6^{\circ}C$ 정도까지 떨어뜨리는 효과가 인정되었다. 그러나 이러한 온도저하 효과는 일일 최고온도가 $40^{\circ}C$ 이상이 되었을 때만 나타났다. 또한 분무처리는 장미의 초장과 생체중을 10-20%정도 촉진시키는 효과가 인정되었다. 다만, 분무처리에 의해 기형화 발생이 많아지고 절화수명이 대조구에 비해 오히려 짧아지는 등, 절화품질에는 부정적으로 작용하였다. 또한 파밤나방유충이나 깍지벌레와 같은 해충의 발생이 많아지는 부작용도 있었다. 따라서 여름 고온 시 온도저하 목적으로 분무를 사용하고자 할 때에는 $40^{\circ}C$ 이상의 고온 시에만 사용하는 것이 좋고, 해충의 발생이 심해질 수 있으므로 예방을 철저히 할 필요가 있다고 사료되었다.

Keywords

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