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Effect of EC and pH of Nutrient Solution on the Growth and Quality of Single-Stemmed Rose in Cutted Rose Production Factory  

Lee Hye Jin (Dept. of Environmental Horticulture, University of Seoul)
Yang Eun-Young (Dept. of Environmental Horticulture, University of Seoul)
Park Keum-Soon (Dept. of Environmental Horticulture, University of Seoul)
Lee Yong-Beom (Dept. of Environmental Horticulture, University of Seoul)
Bae Jong Hyang (Division of Plant and Resource Science, Wonkwang University)
Jeon Kyung Soo (Division of Bio-Environment Science, Wonkwang University)
Publication Information
Journal of Bio-Environment Control / v.13, no.4, 2004 , pp. 258-265 More about this Journal
Abstract
The experiment was conducted to investigate the effect of EC and pH of nutrient solution on the growth and quality of the single-stemmed rose grown in a rose factory installed with hydroponic system. The growth and quality of the single-stemmed rose were not significantly different from each other with the EC of the nutrient solutions $1.0\~3.5dS{\cdot}m^{-1}$, which resulted in concluding high concentration of the nutrient solution was not necessary. The optimum range of the EC for single-stemmed rose was $1.5\~2.0dS{\cdot}m^{-1}$ considering plant growth, photosynthetic and transpiration rates. The optimum range of the pH for good plant growth without any visible physiological disorder was $4.0\~6.0$. Therefore, to keep the pH of the nutrient solution for rose low compared to other plants was beneficial for plant growth and uptake of the mineral ions.
Keywords
deep flow technique; net CO2 assimilation rate; plant factory; root activity; transpiration rate; water use efficiency(WUE);
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