• The Journal of the Korea Contents Association
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• v.19 no.6
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• pp.632-643
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• 2019

This study is analysis how the competitive factors of fitness center's affect customer satisfaction and re-use intention. Accordingly, It surveyed fitness center customers in Pusan and Kyungnam, and analyzed amount 422 questionnaires with the SPSS WIN 23.0 and AMOS WIN 23.0 program, so it reached these conclusions. First, the accessibility of location characteristic showed that it had a relevant influence on the customer satisfaction, but the visibility didn't have a relevant influence on it. Second, the spatiality and convenience of the facility characteristic showed that they influenced customer satisfaction. Third, the responsiveness and professionalism of the service characteristic factor showed that they had a relevant influence on the customer satisfaction, but the reliability and empathy didn't have a relevant influence on it. Fourth, the customer satisfaction had a relevant influence on the reuse intention. According to this study, we found that the competition factor was bound up with the customer satisfaction and reuse intention. In the end, grasping customers' satisfaction and preferred utilization pattern should be reflected actively in the fitness center management.

• Journal of the Korea Organic Resources Recycling Association
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• v.25 no.1
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• pp.79-86
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• 2017

This study was conducted to evaluate plant growth responses and characteristics of composting poultry manure with peatmoss and cocopeat as bulking agent. Treatments were designed as follows; only poultry manure (OP), sawdust+poultry manure (SP), peatmoss+poultry manure (PP), and cocopeat+poultry manure (CP). Period maintained $50^{\circ}C$ over in compost pile of PP and CP was 35 days that longer about 10 days than that of OP or SP, and water content of PP and CP after composting 45 days 50% that was higher about 10%. While poultry manure composted, EC values of PP and CP were higher than that of SP, and pH and OM/N ratio not significant. After finished composting poultry, physicochemical properties of dried all composts were matched on Korean fertilizer guideline. As compared with OP or SP, applications of PP and CP were improved growth and productivity of lettuce, kale and mustard leaf.

• Journal of Bio-Environment Control
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• v.16 no.1
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• pp.40-46
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• 2007

This study was conducted to clarify the effects of the different substrates in terms of perlite (100%), peat moss (100%), granular rock wool (100%) and mixing perlite (50%) with peat moss (50%) on the growth responses and mineral contents of hydroponically grown Plantago asiatic in aggregate culture. Overall early plant growth such as plant height, stem diameter, number of leaves, root length, fresh and dry weight of shoot and root were increased in the order of that miked perlite and peat moss (50%:50%, v/v)>peat moss (100%)>granular rock wool (100%)>perlite (100%). Ca and Mg contents in plants became highest in the plants grown in the peat moss, however, Mg and Na in the granular rock wool. $P_2O_5$ content in plants were most increased in proportion to the plant growth increment in the peat moss (100%) and the mixing substrates of perlite and peat moss (50:50, v/v).

• FLOWER RESEARCH JOURNAL
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• v.18 no.4
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• pp.225-230
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• 2010

This study was conducted to increase the income of cactus farm by selecting cheaper and better media than the peat moss using for Gymnocalycium mihanovichii 'Huhong'. We cultivated Gymnocalycium mihanovichii 'Huhong' on 10 kinds of media (peat moss, culture medium, coco peat, sphagnum moss, hydro ton, hydro cray, hydro bal, hugato, vermiculite, perlite) and analyzed media's physiochemical factors and growth, betacyanin. The results were as follows: In case of media's physical condition planting Gymnocalycium mihanovichii 'Huhong' after 90 days, an approximate value with peat moss is culture medium and coco peat. Also, coco peat has no change in chemical media. The rate of growth and development is high in Coco peat while overall culture medium and coco peat was seen lower growth. The level of betacyanin in subirrigation is higher than overhead irrigation. Meanwhile, hugato among 10 kinds of media has high value in both of overhead irrigation and bottom watering. Thus, culture medium and coco peat is proper for alternation of peat moss due to similar value with peat moss. And coco peat is favorable to media, growth condition, pigment.

• Korean Journal of Plant Resources
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• v.34 no.4
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• pp.263-269
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• 2021

Growth and fruit characteristics of 'Duke' highbush blueberry by mixture of different organic matters in soil were investigated. The soil acidity was 4.2 to 4.8, sawdust treatment was the highest, and peat soil and peatmoss treatments were similar. The organic matter content of the soil was 2.5% for sawdust and 4.1% for soil with peatmoss and peat soil. The soil hardness of all treatment was found to be about 1 ~ 5 kgf cm^-2 which was suitable for growing crops. The number of suckers and main stems were high in the order of peat soil, peatmoss, sawdust treatment. In addition, the blueberry plants in the peatmoss and peat soil treatments had thicker and longer suckers and more shoots than those in the sawdust treatment. Among the characteristics of fruit, there was no statistical difference between the organic materials treatment in weight, diameter, length, and hardness of fruit. However, the total soluble solid and fruit yield were high in the order of peat soil, peatmoss, sawdust treatment. Therefore, as a result of comprehensively reviewing the characteristics of growth and fruits according to the soil environment, it was determined that peatmoss could be replaced with peat soil for stable production in domestic blueberry cultivation.

• Horticultural Science & Technology
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• v.33 no.3
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• pp.435-442
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• 2015

The main objective of this work was to identify and evaluate possible substrate alternatives or amendments to peat moss. This study involves the physical and chemical characterization and growth test of wood sawdust and wood fiber in order to evaluate their use as components of horticultural media. The carbohydrate content, C/N ratio, pH, phenolic compound, total porosity and water holding capacity were 58.9%, 425.1, 4.8, 181.8 ($mg{\cdot}g^{-1}$), 82.5% and 47.1% in wood sawdust and 41.1%, 240.8, 5.9, 29.8 ($mg{\cdot}g^{-1}$), 90.6% and 56.2% in wood fiber, respectively. Wood sawdust (K, $998.0mg{\cdot}100g^{-1}$ ; Ca, $1196.0mg{\cdot}100g^{-1}$; Mg, $105.6mg{\cdot}100g^{-1}$) and wood fiber (K, $1250.1mg{\cdot}100g^{-1}$; Ca, $1982.6mg{\cdot}100g^{-1}$; Mg, $173.1mg{\cdot}100g^{-1}$) showed adequate mineral elements properties compared to peat moss (K, $0.02mg{\cdot}100g^{-1}$; Ca, $0.57mg{\cdot}100g^{-1}$; Mg, $0.13mg{\cdot}100g^{-1}$) for their use as growing media. The mixtures of the horticultural media were prepared using different substrate as wood sawdust and wood fiber to grow Chinese cabbage (Brassica campestris L.) in a greenhouse. The seed germination, leaf area and stem height were 75%, $0.50cm^2$ and 2.8 cm in PS substrate (containing 30% peat moss, 10% perlite and 60% wood sawdust) and 95%, $0.65cm^2$ and 3.3 cm in PF substrate (containing 30% peat moss, 10% perlite and 60% wood fiber), respectively. The seed germination and stem height of the PF substrate (containing 30% peat moss, 10% perlite and 60% wood fiber) was higher than those in peat moss (control). Utilization of wood by-product can be considered as an alternative media component to substitute the widely using expensive peat moss.

• Communications for Statistical Applications and Methods
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• v.4 no.1
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• pp.41-47
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• 1997

본 연구의 목적은 p변량 관측지가 등상관구조를 갖는 경우 주변분산들의 균일성을 검정하는 통계적 절차를 개발하는 것이다. 이를 위하여 2변량의 경우에 적용되는 피트만(Pitman)의 방법을 3변량 이상의 경우로 확장하고 피셔(Fisher)의 임의화 검정을 적용하여 정규분포의 틀에 의존하지 않는 p 값을 산출한다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.10a
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• pp.69-69
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• 2018

벼룩이울타리(Arenaria juncea M.Bieb.)는 청열, 양혈, 허로기열, 골증, 수심작열, 도한 등의 약효가 있으며, 백색의 꽃이 취산화서로 아름답게 개화하여 조경소재로 이용가치가 높다. 본 연구는 벼룩이울타리의 육묘기술 개발을 위하여 2017년 6월 2일부터 7월 31일까지 8주간 수행하였다. 실험의 대조구는 200구 트레이에 원예상토를 충진하고 종자를 셀 당 3립씩 파종하여 무차광 조건에서 육묘하였으며, hyponex $500mg{\cdot}L^{-1}$를 2회 추비하였다. 토양 실험은 원예상토[$300-200-200mg{\cdot}L^{-1}$(N-P-K)]와 피트모스:펄라이트(3:1), 코코피트:펄라이트(3:1) 혼용토를 이용하였으며, 원예상토를 제외한 모든 토양은 0-0-0, 300-200-200, $600-400-400mg{\cdot}L^{-1}$의 비료를 첨가하였다. 종자는 셀당 1, 3, 5립을 파종하였고, 추비는 hyponex (6.5-6-19)를 0, 500, $1000mg{\cdot}L^{-1}$로 4, 6주차에 총 2회 잎이 충분히 젖을 정도로 살포하였다. 차광은 0, 55, 75%로 설정되었다. 벼룩이울타리 육묘의 결과, 토양 종류별로는 원예상토에서 초장이 가장 길었으며, 다음으로 피트모스 혼용토의 순이었다. 피트모스 혼용토에서 육묘한 유묘의 초장은 비료를 첨가하지 않은 처리구에서 길어지는 경향을 보였다. 경직경과 근장은 원예상토 단용구와 코코피트 혼용토가 피트모스 혼용토에 비해 양호하였다. 엽수는 상토(26.1 ea)에서 가장 많았고 다음으로 비료 코코피트 혼용토 $600-400-400mg{\cdot}L^{-1}$(22.9 ea)의 순이었다. 셀 당 파종립수를 달리하여 육묘한 결과, 초장은 파종립수가 적을수록 길었으며, 경직경과 엽수는 처리에 따른 유의적인 차이를 확인할 수 없었다. 추비 처리별로 전반적인 생육은 큰 차이는 보이지 않았으나, 경직경은 처리농도가 낮을수록 두꺼워지는 경향이었다. 엽수는 hyponex 처리시 무처리구에 비해 증가하는 경향을 보였으며, $500mg{\cdot}L^{-1}$ 처리구에서 가장 많았다. 차광정도에 처리에 따른 생육은 차광률이 높을수록 생육이 억제되는 경향이었다. 초장, 엽수 및 근장은 무차광에서 차광처리구에 비해 우수하였다. 경직경은 무차광구와 50% 차광구가 70% 차광구에 비해 증가하였다. 지상부, 지하부의 생 건체중도 무차광에서 가장 무거웠으며, 차광률이 증가할수록 감소하였다.

• Journal of Bio-Environment Control
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• v.19 no.4
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• pp.217-222
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• 2010

Bark is a general medium for potted Cymbidium in Korea, but it is difficult to shake off or eliminate the medium from the roots before exporting the potted plants. This working process can injure the roots and then deteriorate plant marketability. This study was carried out to select the optimum medium easier to eliminate from the roots instead of bark and the optimum amount of applied fertilizer to improve the plant growth. Cymbidium young plants 'Honey Hot' and 'Desert Look' were planted in pots with bark, cocochip, and peatmoss. The plants were treated with 2, 4, and 6 g of slow release fertilizer. The plant growth characteristics were investigated in the first and second years during production period of three years. The medium characteristics and mineral nutrient content of the leaves were also examined in the second year. In the first year, the plant growth of 'Desert Look' was improved in all peatmoss treatments more than bark. 'Honey Hot' showed the highest plant growth values in the bark treatment. In the second year, the plant growth of the two cultivars was improved in peatmoss. Cocochip treatments showed the lower plant growth values than bark and peatmoss in the first and second year. There was no significant difference among fertilizer amounts in all the media. The higher CEC values of peatmoss medium resulted to higher capacity to hold more nutrients than bark, and the nutrient retention of the peatmoss improved the plant growth. The higher K and Ca contents in the leaves would contribute to improve the plant growth. Consequently, it would be possible to use peatmoss instead of bark for Cymbidium young plants, but there must be always attention to appropriately water the medium and manage the moisture.

• Horticultural Science & Technology
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• v.18 no.1
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• pp.33-38
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• 2000

This study was conducted in an effort to meet the need for domestic production of hydroponic media and for medium development using recycled hydroponic rockwool slabs. Two experiments were conducted to evaluate the growth of plug seedlings of petunia 'Romeo' in various mixtures including particles of used rockwool slabs (rockwool particles) and wood chips. In the first experiment, seedlings were grown in plugs filled with mixtures of steam- sterilized rockwool particles and chestnut wood chips, which had been weathered for six months and screened through either 2.8 mm or 5.6 mm sieve, at the mixing ratio of 100:0, 75:25, 50:50, 25:75, or 0:100 (v/v). In the second experiment, seedlings were grown in plugs filled with twenty different mixtures of steam-sterilized particles of used hydroponic rockwool slabs with 4 mm chestnut or pine wood chips, coir, peatmoss, or perlite. In the first experiment seedling growth was not affected by particle size of chestnut wood chips, was superior in the control (commercial plug medium) and in 100% rockwool particles, but was suppressed as mixing ratio of chestnut wood chips increased. In the second experiment, leaf length, and shoot fresh and dry weights were the greatest in rockwool particles+peatmoss+coir treatment, followed by rockwool particles+peatmoss treatment. Leaf length was suppressed as ratio of wood chips increased, especially of chestnut wood chips. Root development was the greatest in rockwool particles+peatmoss+perlite treatment, followed by the control, and rockwool particles+peatmoss+coir treatment. The growth was suppressed as the mixing ratio of rockwool particles, peatmoss, or coir decreased.