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Effects of Several Cooling Methods and Cool Water Hose Bed Culture on Growth and Microclimate in Summer Season Cultivation of Narrowhead Goldenray 'Ligularia stenocephaia'  

Kim, Ki-Deog (Highland Agriculture Research Center, NICS)
Lee, Eung-Ho (National Institute of Horticultural & Herbal Science)
Kim, Won-Bae (National Institute of Horticultural & Herbal Science)
Lee, Jun-Gu (National Institute of Horticultural & Herbal Science)
Yoo, Dong-Lim (Highland Agriculture Research Center, NICS)
Kwon, Young-Seok (Highland Agriculture Research Center, NICS)
Lee, Jong-Nam (Highland Agriculture Research Center, NICS)
Jang, Suk-Woo (National Institute of Horticultural & Herbal Science)
Hong, Soon-Choon (Highland Agriculture Research Center, NICS)
Publication Information
Journal of Bio-Environment Control / v.20, no.2, 2011 , pp. 116-122 More about this Journal
Abstract
This study was carried out to investigate the effects of several cooling methods such as water hose cooling, mist, fog and control on growth and microclimate, and to develop a simple nutriculture bed for production of fresh leaves of narrowhead goldenaray 'Ligularia stenocephala'. When the root-zone was cooled with 240 L/hr flow rate of $13^{\circ}C$ ground water using water hose, the temperature was lowered approximately by 2 to $3^{\circ}C$ than that of control. The growth of narrowhead goldenaray were favorable in the water hose cooling compared with the other cooling methods. Nutrient culture system having part cooling effect around plant canopy was developed. The system was composed of 15 cm diameter of water hose on side wall of beds, cooling hose, and expanded rice hull media as organic substrate. When cool water which the temperature changed in the range of 14 to $22^{\circ}C$ diurnally with 240 L/hr of flow rate through water hose, the air temperature around canopy and root-zone temperature were dropped by $0.5^{\circ}C$ and $3^{\circ}C$ compared with that of conventional styrofoam bed, respectively. These results showed that newly devised bed system using water hose was simple and economical for the production of high quality narrowhead goldenaray leaves. This system might be practically used both at summer and winter season for the cultivation of narrow head goldenaray by part cooling or heating around root-zone and plant canopy.
Keywords
hose; Ligularia stenocephala; local cooling; nutriculture bed;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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