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KMID : 0903619940350020095
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Journal of the Korean Society for Horticultural Science
1994 Volume.35 No. 2 p.95 ~ p.102
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Shading Responses on the Growth and Essential Oil Content of Hydroponically Grown Sweet Basil (Occimum basilicum L.)
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Abstract
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sweet basil (Ocimum basilicum L.) as influenced by the hading level. White cheesecloth (21 % shading), black cheesecloth (50% shading) and black shading material, $quot;Gariso$quot; (50% shading), were used in this experiment. DFT (deep flow technique) system was employed and David and Stewart´s formula of nutrient solution was used. Growth in the plot of white cheesecloth and natural condition were generally higher than that of the other plots. Plant height was higher in the black cheesecloth than natural condition, and leaf area (5600 ㎠/plant) in the plot of white cheesecloth showed 2 or 3 times larger when compared with the plot of black cheesecloth (2384 ㎠/plant) or $quot;Gariso$quot; (892 ㎠/plant). No significant difference between the plot of white cheesecloth and natural condition were shown in total fresh weight. Total dry weight and dry weight ratio in natural condition were greatest i.e. 44.78 g and 9.8 percent respectively. The oil contents was 1.46 g per ㎏ in natural condition and 1.47 g in the plot of white cheesecloth, and total oil contents per plant was 0.268 g per plant in the natural condition and 0.274 g per plant in the plot of white cheesecloth. Modifying the light environment by the optimum level of shading of the hydroponically grown sweet basil was demonstrated to promote the growth and to increase the oil content of sweet basil plant.
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