• Title/Summary/Keyword: Growing-media

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Changes in the Physico-Chemical Properties of Growing Media and the Growth of Oriental Melon Seedlings(Cucumis melo L.) by Charcoal Application (활성탄 혼합 비율에 따른 상토의 이화학성 변화와 참외(Cucumis melo L.)묘의 생육)

  • Kim, Kab-Cheol;Uhm, Mi-Jeong;Moon, Young-Hun;Choi, Yeong-Geun
    • Journal of Bio-Environment Control
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    • v.13 no.1
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    • pp.61-66
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    • 2004
  • To investigate the effect of charcoal on the physico-chemical characteristics in the growing media and the growth of oriental melon, six treatment, 0%, 10%, 20%, 30%, 40%, and 50% charcoal, were added into the growing media, Baroker. The value of pH in the charcoal contained growing media (CGM) was recorded higher and further increased by raising the charcoal ratio and by growing period. In 20% CGM, the range of pH was adequate to grow crop as 5.2${\sim}$5.8. Contents of Ca and K in CGM increased by raising the ratio of charcoal, while contents of Mg and Na decreased. The growth of oriental melon seedlings in 20% and 30% CGM was better than in other treatments, in terms of fresh and dry weight of shoot, plant height, leaf area, lear width and relative growth rate. Both the physico-chemical properties of growing media and the growth of oriental melon seedlings were changed by the addition of charcoal. These results suggest that charcoal can be used as mixing material with other potting media for producing the seedling of good quality.

Influence of Rice-Root-Nematode(Hirschmanniella aryzae) on the Root Browning of Rice (벼뿌리의 갈변에 미치는 벼뿌리선충의 영향)

  • Lee Young-Bae;Park Jung-Soo
    • Korean journal of applied entomology
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    • v.14 no.1 s.22
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    • pp.35-36
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    • 1975
  • An experiment was carried out to know bow the rice root nematode, Hirschmanniella cryzae affects the root browning of rice pant growing in various combinations of media. In sterilized conditions of growing media, the root browning of rice plant was slightly promoted by the presence of the rice root nematode, while the entire roots were stained to brown in nonsterilized conditions of growing media. It seems that the root browning is due mainly to soil micro-organisms other than nematode which promotes it slightly under sterilized conditions.

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Effects of Interruption Layer for Capillary Rise on Salt Accumulation and Kentucky Bluegrass Poa pratensis Growth in Sand Growing Media over the Reclaimed Saline Soil (임해 간척지에서 모래상토 층에 모세관수 차단 층의 도입이 염류 집적과 켄터 키블루그래스 생육에 미치는 영향)

  • Rahayu, Rahayu;Yang, Geun-Mo;Choi, Joon-Soo
    • Asian Journal of Turfgrass Science
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    • v.24 no.2
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    • pp.106-116
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    • 2010
  • This research was conducted to determine the effect of interruption layer for capillary rise on the sand based growing media when growing Kentucky bluegrass (Poa pratensis L.) on soil reclamation and saline water irrigation. Growing media profile consists of three layers as top soil of 30 cm, 20 cm of the interruption layer for capillary rise and 10 cm of reclaimed paddy soil. Growing media profile was packed in 30 cm diameter column pots. The top soil was a mixture of sand dredged up from Lake Bhunam Tae Ahn, Korea and peat at the ratio of 95:5 by volume. Bottom part of column was covered with plastic net and the pots were soaked into 5 cm depth saline water reservoir with salinity $3-5\;dS\;m^{-1}$. Kentucky bluegrass was established by sod and irrigated using $2\;dS\;m^{-1}$ saline water ($5.7\;mm\;day^{-1}$) in 3 days interval. The results showed that the largest accumulation of salt in the spring with electrical conductivity in saturated extract (ECe) of $5.4\;dS\;m^{-1}$ and sodium absorption ratio (SAR) 34.0 in growing media without the interruption layer for capillary rise and ECe of $4.6\;dS\;m^{-1}$ and SAR 8.24 at growing media using gravel as the interruption layer for capillary rise material. The interruption layer for capillary rise of gravel and coarse sand reduced the accumulation of Na by 16% and 25%, ECe by 7% and 13% in the growing media. Visual quality of Kentucky bluegrass was higher in growing media with the interruption layer for capillary rise of gravel than no interruption layer by 8.3 compared to 7.9 in rates. The interruption layer for capillary rise of gravel and coarse sand enhanced the visual quality by 4.1 and 4.0%, root length by 50 and 38%, and root dry weight by 35 and 17% of Kentucky bluegrass, and reduced the accumulation of Na by 16% and 25%, ECe by 7% and 13% in the growing media.

Growth of Two Native Zoysiagrasses Collected from Sea Side and Mountain Area in Indonesia on Growing Media Composed of Sand and Clay

  • Rahayu, Rahayu;Dewantoro, Hery;Arianto, Dwi Priyo;Bae, Eun-Ji;Choi, Su-Min;Lee, Kwang-Soo;Yang, Geun-Mo;Choi, Joon-Soo
    • Weed & Turfgrass Science
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    • v.7 no.1
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    • pp.54-61
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    • 2018
  • Zoysiagrass (Zoysia spp.) exists spotly in Indonesia and it has potential to be used in parks, golf courses, and football fields. Many football fields and golf course fairways use sand as top soil over native soil. This study aims to analyze growth and quality of two native zoysiagrasses Zis and Zim. Zis is a native zoysiagrass collected in sea-side and Zim is a native zoysiagrass collected in mountain area. Both types of zoysiagrasses were planted at field with altitude of 300 m with various growing media mixes of sand and reservoir's sediment. Thickness of the growing medium was 10 cm over an alfisol clay soil. Experimental plots were constructed using factorial completely randomized design with two native zoysiagrasses and 5 types of growing media. Two ecotypes of native zoysiagrasses showed different in growth habits combined with mixtures of growth media. Zim showed higher growing speed including more vigor with uniformity and texture than Zis. There were not significanthly differences on leaf color and root length between two ecotypes of native zoysiagrasses collected in Indonesia.

Cultivate Characterics of Chili Growth using Nutrient Solution in Articifial Soil (인공 토양에서의 양액을 이용한 고추의 재배 특성)

  • Yoon, Sang Jin;Sean, Keefe Dimas Harris;Kwon, Soon Hong;Chung, Sung Won;Kwon, Soon Goo;Park, Jong Min;Kim, Jong Soon;Choi, Won Sik
    • Journal of the Korean Society of Industry Convergence
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    • v.20 no.5
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    • pp.351-357
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    • 2017
  • Growing plant in potting media without soil is known as Soilless cultivation. This method is used mostly in greenhouse cultivation to increase horticultural commodities production. Peat moss is commonly utilized as potting media substrate because of its characteristic. However, peat moss price is high because of the quantity of peat moss in nature has been decreased. Recently, most of the research is conducted to find the alternative growing medium to cultivate horticulture plant in potting media. Perlite and rice husk ash were mentioned that had a potent as alternative growing media for seasonal plants to increase agriculture production due to the lack of production area. This study aimed to determine the effect of using different substrate and growth performance of chili. The method used was the soilless cultivation. The chili was planted in the pot with perlite media, rice husk ash media, and peat moss media. The chili was measured after 65 days after planting. The result showed that rice husk ash and perlite were more potentials in chili growth performance than peat moss. Rice husk ash had the significant result of plant height. While, Perlite effect on root length, plant weight, leaf length, and stem diameter. The best alternative for cultivation chili without substrate based on this research was perlite then rice husk ash and peat moss.

Enterprise Content Management and its Impact on Information Lifecycle Management

  • Landro, Art
    • Proceedings of the CALSEC Conference
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    • 2004.02a
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    • pp.43-48
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    • 2004
  • The Explosion of Content ·Over 80% of enterprise content is unstructured(Fulcrum Research) ·Content volume is growing by over 200% per year (Forrester Research) ·There are all kinds of Unstructured Content including Documents, Output, Web, Rich Media, Code etc ·ECM Market growing to more than >$2.6 Billion in 2003. (Frost & Sullivan)(omitted)

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Consumer Value and Social Media Usage on Luxury Product for Vietnamese Consumers

  • Hyun, Hyowon;Park, JungKun;Pham, Tuan Ba;Ren, Tianbao
    • Asia Marketing Journal
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    • v.19 no.4
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    • pp.15-36
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    • 2018
  • Vietnamese luxury market is rapidly growing, however, there is a few researches on Vietnamese consumers' perceptions of luxury products and influential factors in purchasing intention. The purpose of this study is to explore Vietnamese consumers' value dimensions and mediating effect of social media information for their decision making for luxury product. Data were collected using self-administered mail survey. This study examines the influences of consumers' perceptions of quality and value, and social media word-of-mouth on Vietnamese consumers' luxury purchase intention.

Enhancing the Reliability of OTT Viewing Data in the Golden Age of Streaming: A Small Sample AHP Analysis and In-Depth Interview

  • Seung-Chul Yoo;Yoontaek Sung;Hye-Min Byeon;Yoonmo Sang;Diana Piscarac
    • International journal of advanced smart convergence
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    • v.12 no.1
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    • pp.140-148
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    • 2023
  • With the OTT media market growing rapidly, the significance of trustworthy data verification and certification cannot be emphasized enough. This study delves into the crucial need for such measures in South Korea, exploring the steps involved, the technological and policy-related considerations, and the challenges that may arise once these measures are put into place. Drawing on in-depth interviews and the analytical hierarchy process (AHP), this study surveyed various stakeholder groups, both directly and indirectly related to OTT data authentication and certification. By assessing the severity of OTT data-related issues and identifying the requirements for reliability-improvement policies, participants shared their valuable insights and opinions on this pressing matter. The survey results clearly indicate a divided opinion among stakeholders and industry experts on the reliability of OTT data, with some expressing trust while others remain skeptical. However, there was a consensus that advertising-based AVOD is more reliable than SVOD. By analyzing the priorities of authentication and verification, this study paves the way for the establishment and operation of a Korean MRC (KMRC), centered on the OTT media industry. The KMRC will serve as a vital platform for ensuring the authenticity and accuracy of OTT data in South Korea, providing businesses and industry players with a reliable source of information for informed decision-making. This study highlights the pressing need for reliable data authentication and certification in the rapidly growing OTT media market, and provides a persuasive case for the establishment of a KMRC in South Korea to meet this critical need.

Examining Context-specific Social Media Marketing Strategies

  • Park, Jin-Won;Cho, Eun-Young;Kim, Hee-Woong
    • Asia pacific journal of information systems
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    • v.26 no.1
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    • pp.143-162
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    • 2016
  • Social media marketing has gained attention from marketers because of the growing number of social media users. Considering the unique context of each company or organization behind the marketing is necessary when choosing and applying various social media marketing strategies to ensure achievement of better business performance. However, previous studies have focused on context-specific marketing strategies. Accordingly, this study aims to develop context-specific social media marketing strategies. In this study, we first develop a conceptual framework with two items, namely, brand awareness and business orientation of an organization, as criteria, and classify the framework into four contexts. We then propose context-specific social media marketing strategies for each of the contexts. We examine the framework and proposed social media marketing strategies based on multiple case studies. The primary contribution of this study is our context-specific social media marketing strategies.

Nursery Growing Media Practice: Impact on Seed Germination and Initial Seedling Development of Hymenodictyon orixensis (Roxb.) Mabberley - A Vulnerable Native Tree Species

  • Islam, Azharul;Hao, Hong;Hossain, Mohammed Kamal;Rahman, Mahmudur
    • Journal of Forest and Environmental Science
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    • v.38 no.1
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    • pp.38-47
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    • 2022
  • Hymenodictyon orixensis (Roxb.) Mabberley (locally known as Bhutum in Bangladesh) is both an ecologically and economically valuable multipurpose tree species for afforestation and reforestation programs in Bangladesh. Seed germination and seedling development study of H. orixense were conducted to find out the response to different growing medium, e.g., polybag (15×10 cm (T0) and 20×15 cm (T1)), sand medium in propagator house (T2), conventional nursery bed (T3), and root trainer (T4) in the Nursery. Consequently, germination behavior and seedling morphological parameters of H. orixense were assessed. The results revealed that the sand medium of the propagator house (T2) provided the highest germination % (58.57±22.30) and the highest germination energy (11.43±2.43) followed by seedlings growing in 20×15 cm polybags (T1) containing forest topsoil and cow-dung at a ratio of 3:1. Except for germination energy, germination values, and germination capacity, other seed biology parameters, particularly imbibition, germination period, germination rate, and plant survival percent in T1, T2, T3, and T4 were significantly (p<0.05) different from T0. Each phenotypic parameter of seedlings and dry matter of shoot and root significantly differed from control except root length (p<0.992). Based on this study, Polybags of 20×15 cm size are regarded as the best medium for quality seedling development of H. orixense. The nursery bed (T3) had the lowest germination performance and developed more inferior quality seedlings. Thereby, 20×15 cm size of polybags with conventional soil and cow-dung media is recommended for maximum germination and to grow the quality seedlings of H. orixense in the Nursery.