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KMID : 0903619910320040533
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Journal of the Korean Society for Horticultural Science
1991 Volume.32 No. 4 p.533 ~ p.544
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Studies on the Present Status of Cultivation and Utilization of Foliage Plants
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이정식/Lee, Jeong Sik
상채규/서영란/지인자/Sang, Chae Kyu/Suh, Young Na/Chi, In Za
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Abstract
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The domestic conditions of use of foliage plants were investigated to facilitate the advancement of indoor horticulture industry. The state of foliage plant used was investigated with an indicator plant, and the machinery and tools in measurement in each three individual house, apartment and hotel. The results are summarized as follows:
1. In general, among temperature, humidity and light, temperature were maintained best with humidity, the next, light condition was mostly inadequate. Apartments had the most adequate light condition and next was individual house. Hotel was worst in the light environment. Temperature was managed better at hotels and apartments than individual houses. There were to worry chilling injury due to leaf drop below 10℃ in high temperature requirement plants at individual house. In relative humidity, most of using places was somewhat dry. Especially in some hotels and individual houses it was too dry for plants to grow. Light transmission (indoor/outdoor) was 4% in average, which were worst among environments. In comparisons among using places, apartment was highest, and individual house next. Hotels had the worst in light condition for plant growth on account of 0.2∼0.4% light transmission.
2. Comparisons of actual growing conditions with optimum ones using indicator plants, hotels also were worst in the environments, therefore it was impossible for plants to survive during the long period. Three individual houses and three apartments were compared for plant growth conditions using indicator plants (Pilea cadierei). The best growth of Pilea was noticed in apartments compared with individual houses. However, there were considerable differences among users. The extreme differences of growth among users were about 2 times in leaf area and leaf numbers, 1.8∼1.9times in number of branches and top fresh weight, whereas there were little difference in chlorophyll contents and no difference in T/R (top/root) ratio. In the photosynthetic analysis of indicator plants (Pilea), the light compensation point was 6.97 to 9.08μE/㎡/sec, and the light saturation was 132.9μE/㎡/sec. These tendencies showed no great difference among the users. Photosynthates per unit of leaf area (CO₂㎎/d㎡) were considerablly different among individual houses. The photosynthates per plant in apartments were 2 times greater than those in individual houses. Correlation coefficient values of environmental factors and plant growth were analyzed. Top fresh weight was positively correlated with the light transmission, light intensity and humidity significantly. Therefore it is important for growers to increase the light intensity and humidity at home for better indoor plant growth. Leaf length and leaf width showed little correlation with varied environment conditions.
3. Bushy type of pot plants with the size of less than 60㎝ height normally used for separation or grouping, whereas hotel usually used bushy or upright-type foliage plants with the size more than 60㎝ height. Some users made their own landscapes or used indoor plants for terrarium purpose. Kinds of plant varied according to user´s places.
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