• Title/Summary/Keyword: Pots

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The effect of root zone environment on the growth of shoot and root of tobacco plant (연초의 근권환경이 뿌리와 지상부의 생육에 미치는 영향)

  • 이부경
    • Journal of the Korean Society of Tobacco Science
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    • v.11 no.2
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    • pp.197-202
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    • 1989
  • This experiment was conducted to investigate the effect of growth medium in pots composed of upland soil(S), rice straw manure(M), carbonated rice hull(CRH), and their mixture on growth of tobacco cv. NC 82. The growth of shoot and root was vigorous in order of medium S+M+CRH>M>CRH>S. In M+S medium, root growth in the part of manure was superior to upland soil. But root growth of upland soil part in M+S plot was more vigorous than that in upland soil only. It is possibly due to be influenced by manure in M+S plot. Total length and weight of root, number of roots, and especially for development of adventitious root were closely related to shoot growth. Roots grown in upland soil part was brownish gray in color, while the roots in manure part was milky white. The milky white colored roots had longer life than others. It was concluded that root zone environments derived from several media in pots closely related to shoot growth and disease tolerance of tobacco plant.

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Biological Control of Fusarium Wilt Disease of Pigeonpea

  • Rajesh Singh;B.K. Singh;R.S. Upadhyay;Bharat Rai;Lee, Youn-Su
    • The Plant Pathology Journal
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    • v.18 no.5
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    • pp.279-283
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    • 2002
  • Biological control of Fusarium udum causing wilt disease of pigeonpea was studied in vitro, as well as, in vivo. Aspergilluspavus, Anergillus niger, Bacilius licheniformis (strain-2042), Gliocladium virens, Peniciliium citrimum, and Trichoderma harzianum, which were found to be the most potent ones in inhibiting the radial colony growth of the test pathogen, were used as biological control by amending their inocula at diffeyent concentrations in pots and in pathogen-infested soil in the fields. Maximum reduction of the wilt disease was observed with G. vireos both in pots and in the fields. The population of E. udum was found to be markedly reduced when the antagonists were applied in the soil. The study establishes that G. virens can be exploited for the biological control of wilt disease at field level.

The Politics of the Pot: Contemporary Cambodian Women Artists Negotiating Their Roles In and Out of the Kitchen

  • Ly, Boreth
    • SUVANNABHUMI
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    • v.12 no.1
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    • pp.49-88
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    • 2020
  • Two utilitarian and symbolic objects associated with womanhood in Cambodian culture are the stove and the pot. The pot is a symbol of both the womb and female sexuality; the stove is a symbol of gendered feminine labor. This article argues that the sexist representations of the Khmer female body by modern Cambodian male artists demonstrate an inherited legacy of Orientalist stereotypes. These images were formed : under French colonialism and often depict Khmer women as erotic/exotic native Others. Starting in the 1970s, however, if not earlier, Cambodian women began to question the gendering of social roles that confined them to domestic space and labor. This form of social questioning was especially present in pop songs. In recent years, contemporary Cambodian woman artists such as Neak Sophal and Tith Kanitha have made use of rice pots and stoves in their art as freighted symbols of femininity. Neak created an installation of rice pots from different households in their village, while Tith rebelled against this gendered role by destroying cooking stoves as an act of defiance against patriarchy in her performance art.

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Effect of Dispersed and Proximate Inoculation Methods of Glomus etunicatum on Root Colonization of Sorghum-Sudangrass Hybrid

  • Lee, Seonmi;Selvakumar, Gopal;Krishnamoorthy, Ramasamy;Kim, Kiyoon;Choi, Joonho;Sa, Tongmin
    • Korean Journal of Soil Science and Fertilizer
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    • v.46 no.5
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    • pp.373-378
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    • 2013
  • Information on the effective application method of arbuscular mycorrhizal fungi (AMF) inoculum is still inadequate. This work was performed to assess two AMF inoculation methods (dispersed and proximate) on root colonization of sorghum-sudangrass hybrid (Sorghum bicolor L.). In dispersed inoculation method, spores were inoculated in 2 kg pots of soil in which 5 day-old seedlings were transplanted and maintained for 50 days. In the proximate inoculation method, spores were first introduced in 500 mL pots where seeds were sown. After 10 days, the seedlings with the 500 mL soil were transferred to 2 kg pots without disturbing the contents. After 50 days of growth, root colonization and arbuscule abundance significantly increased (over 100%) in proximate method of inoculation. Moreover, sorghum-sudangrass hybrid had higher shoot growth (182.5 cm) and Glomalin related soil protein (GRSP) production in proximate method. Nutrient accumulation, particularly total nitrogen (82.61 mg $plant^{-1}$), was also found to be higher in proximate method of inoculation. Our results demonstrate that the proximate method of inoculation may improve the early stage mycorrhizal symbiosis and inoculum performance in Saemangeum reclaimed soil.

Analysis of Flexural Strength of Seedling Pots Made by a Pulp-Molding Machine under Different Water Contents (펄프 몰드식 육묘포트의 성형조건 및 수분 흡습에 따른 굴곡 하중 특성 분석)

  • Song, D.B.;Jeong, J.W.;Kim, C.H.;Huh, M.R.
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.41 no.4
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    • pp.43-51
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    • 2009
  • Paper mill sludges are discharged around 870,000 M/T annually. Only 30% of the paper mill sludge have been recycled and the rest has been disposed by land fill, incineration, ocean abandonment and other ways. Because of overall prohibition of sludge disposal by London Dumping Convention in 2012, a urgent counter measure for paper mill sludge must be provided. In this paper, some basic experiments were carried out to develop a tray cell pot using paper mill sludge for increasing the recycling potential of the wasted sludge. To establish the manufacturing parameters, the tray cell pots were made with three types of materials including virgin pulp, old news paper and corrugated board mixed in a blend tank of a molding machine. The bending force and moisture content of the produced tray cell pots was measured to confirm the application capability. The tray cell pot could be manufactured under the condition of over 20% of virgin pulp, 40% of old news paper added. However, the corrugated board could not be used because of the glutinous substance included. The produced tray cell pot absorbed water very easily and the bending force decreased rapidly. The waterproof material must be used to applicate the produced tray cell pot in plant growing fields.

Utilization of Paper Sludges for Developing Bed Soils and Seedling Pots (I) - Physico-chemical analysis of paper sludges - (상토 및 육묘 포트의 개발을 위한 제지 슬러지의 이용 (제1보) - 제지 슬러지의 물리.화학적 분석 -)

  • Kim, Chul-Hwan;Kim, Gyeong-Yun;Sin, Tae-Gi;Jung, Ho-Gyeong;Lee, Young-Min;Song, Dae-Bin;Huh, Moo-Ryong
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.39 no.4
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    • pp.61-67
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    • 2007
  • Paper sludges collected from three different paper mills were physico-chemically analyzed in order to use them as raw materials for making bed soils and seedling pots. The sludge from a fine paper mill contained lots of inorganic pigment particles used for coating, as those from a newsprint mill and a tissue mill had not. It was clearly through XRD analysis confirmed that all sludges included calcium carbonate. The paper sludge from the tissue mill contained the greatest amount of particles, which would contribute to water absorption and nutrient storage. The sludge from the fine paper mill had the highest density due to many inorganic elements. While the ash content and the total nitrogen content were the highest in the sludge from the fine paper mill, the C/N ratio was the lowest in the fine paper mill sludge. All sludges seemed to have insufficient contents of potassium. The sludges from the newsprint mill and the tissue mill showed more silicon contents than that from the fine paper mill. It was concluded that the sludge from the fine paper mill would be able to be the most efficient raw materials for making bed soils and seedling pots and the other two sludges would be more efficient for intensive culture for crops such as rice and grain with additional supplement of nitrogen and other nutrients.

Seasonal and Interannual Variation in Species Composition of Fish Assemblages Collected by Pots in the Southern Coast of East Sea, Korea (동해 남부 연안해역 통발에서 채집된 어류 군집의 계절변동과 연간변동)

  • Park, Joo Myun;Huh, Sung-Hoi
    • Korean Journal of Ichthyology
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    • v.27 no.4
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    • pp.310-316
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    • 2015
  • The seasonal and interannual variation in the species composition and abundance of the fish assemblage were studied. Fish samples were collected seasonally over 4 year (2005 to 2008) using pots in the southern coast of East Sea. During the study period, a total of 32 fish species belonging to 24 families were collected. The dominant species were Conger myriaster, Paracentropogon rubripinnis, Liparis tanakae, Parapercis sexfasciata, Eptatretus burgeri and Clupea pallasii pallasii, which accounted for 91.9% of the total number of individuals collected. The number of species, number of individuals, biomass, and diversity fluctuated with season. The peak number of species and number of individuals occurred were in August 2008, whereas the biomass was the highest in August 2005 and diversity was in May 2008. The abundance of dominant species also showed some seasonal and interannual changes. A one-way analysis of similarity (ANOSIM) showed that the fish assemblage in 2008 was significantly different from those of 2005, 2006 and 2007, whereas there was no significant difference among seasons over 4 years.

Cooking Techniques to Improve the Taste of Cooked Rice;Optimal Cooking Conditions for Top Rice Cultivars (우리 쌀의 밥맛 향상을 위한 취반기술 개발 연구;제2보 탑라이스 쌀 품종의 취반특성 연구)

  • Han, Gwi-Jung;Park, Hee-Joeng;Lee, Hye-Yoen;Park, Young-Hee;Cho, Yong-Sik
    • Korean journal of food and cookery science
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    • v.24 no.2
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    • pp.188-197
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    • 2008
  • This study was carried out to determine the optimal cooking conditions for various rice cultivars (Ilpoom, Saechucheong, Sindongjin, and Sura-top rice) using trial preparations with different soaking times (0, 30, and l20min) and cooking equipment (electric pressure cookers, electric cookers, gas pressure cookers, iron pots, and stone pots). In adddition, the texture and sensory characteristics of the rice prepared with the electric pressure cookers, gas pressure cookers, and stone pots were analyed. The results showed that the moisture, amylose and physicochemical compositions of the four rice varieties were similar. According to RVA, the Sura, cultivar had generally high viscosity, and the Ilpoom, cultivar presented the highest hot and peak viscosities. Saechucung had the highest initial gelatinizing temperature and Sindongjin showed the greatest setback. The optimal amounts of added water as well as heating conditons were dependent on the rice varieties, soaking times, and cooking equipment. A longer soaking time reduced the hardness of the cooked rice, amount of added water, and the heating time. The pressure cooking equipment provided the best cooked rice texture, reduced the affect of the soaking time, and decreased the heating time. In general, all the variaties of cooked rice had high overall acceptability, which tended to increase when the rice was soaked for 30min prior to cooking, had a 1.2-fold amount of water to rice added, and was cooked in the pressure equipment.

Effect of Silicon Application on Growth Response of Alfalfa Seedlings Grown under Aluminum Stress in Pots

  • Yoon, Il-Kyu;Kim, Min-Jun;Min, Chang-Woo;Khan, Inam;Lee, Byung-Hyun
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.41 no.3
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    • pp.162-167
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    • 2021
  • Aluminum (Al) stress in acidic pH is known to decrease the growth and productivity of alfalfa. However, not much is known about how the application of silicon (Si) affects the Al stress response in alfalfa. This study was conducted to evaluate the effect of exogenous application of Si on the growth of alfalfa seedlings exposed to Al stress in pots. Alfalfa seedlings grown in pots for 2 weeks were treated either Al stress (pH 4.0, 0.2 mM Al) or Al stress + Si (1 mM) for 5 days, lengths and biomass of shoot and root, and chlorophyll and carotenoid contents in leaf tissues were analyzed respectively. Al stress treatment inhibited shoot and root growth, and decreased fresh and dry weights, and chlorophyll content in leaves, but increased carotenoid content. In contrast, when alfalfa seedlings treated with Al stress combined with Si, delayed growth caused by Al stress of shoot and root of alfalfa seedlings was restored, dry weight was increased and chlorophyll content of leaf tissue was increased, but carotenoid content was decreased. These results suggest that Si has a function of alleviating Al toxicity in alfalfa, of which it exhibits a mitigating effect by a function that overlaps with some of the intracellular functions of carotenoids.