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Development of Small Vascular Bundles at Different Tillers as Affected by Nitrogen Levels in Rice Plants (질소시용수준이 수도 분얼경의 소유관속 발육에 미치는 영향)

  • Dong Jin, Lee;Benito S. Vergara;Oscar B. Zamora;Ie Sung, Shim;Bong Ku, Kim;Je Cheon, Chae
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.39 no.4
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    • pp.366-372
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    • 1994
  • The experiments were conducted to evaluate the effect of nitrogen application on the development of small vascular bundle in the rice plants. Two cultivars, IR58, an indica type and Unbong 7, a japonica type were used in this study. The number of small vascular bundles in peduncle of different tillers was increased with the increase of nitrogen level. In the main culm, number of small vascular bundles at higher nitrogen level was increased by 39% in IR58 and 24% in Unbong 7 compared with nitrogen free plot. The main culm had more small vascular bundles in the peduncle and number of small vascular bundle was decreased with later tiller order and tiller development. The number and cross sectional area of small vascular bundles in flag leaf blade and sheath of main culm were increased with increasing levels of nitrogen. The number of small vascular bundles in peduncle was highly correlated with the number of spikelets and grain weight per panicle.

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Effect of Plant Spacing on the Competitive Ability of Rice Growing in Association with Various Weed Communities at Different Nitrogen Levels (잡초군락형별로 본 질소시비량과 재식밀도가 수도의 경합력에 미치는 영향)

  • S. C, Kim;Keith, Moody
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.25 no.4
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    • pp.17-27
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    • 1980
  • All types of weed community became dominant by Monochoria vaginalis (Burm.) Presl. as the nitrogen level increased. The importance value (IV.) of M vaginalis rapidly increased with increasing nitrogen level whereas the LV. of other weed species decreased. At the 10 $\times$ 10cm plant spacing, M. vaginalis was almost totally suppressed at all nitrogen levels. At the 20 $\times$ 20cm plant spacing, the degree of suppression declined with increasing nitrogen level. At the 30 $\times$ 30cm plant spacing, there was no suppression of M vaginalis at the highest nitrogen level. The yield obtained at the 10 $\times$ 10cm plant spacing when M. vaginalis was present was not significantly different from that obtained from the weed free plot for all rice cultivars while it was significantly reduced by M vaginalis competition at the 20 $\times$ 20cm and 30 $\times$ 30cm plant spacings. The difference in yield caused by M vaginalis competition was primarily due to a reduction in the number of panicles at all nitrogen levels. There was a high negative correlation between grain yield and weed weight at heading. The yield reduction due to weed competition varied depending upon the nitrogen level.

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Effect of Planting Density and Fertilizer Application Level on Yield and Agronomic Characters in a Semi-dwarf Soybean Cultivar (재식밀도와 시비량이 단경종 콩의 주요 생육형질과 수량에 미치는 영향)

  • 박춘봉;정진욱;황창주;소재돈;박노풍
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.35 no.1
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    • pp.73-82
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    • 1990
  • The experiment was carried out to study the influence of planting space and fertilizer application levels on some agronomic characters and yield in newly released semi-dwarf soybeans, Paldalbong and Dankyungkong. The number of branches per plant was not reduced by planting space from 60${\times}$10cm 30${\times}$15cm. These Semi-dwarf soybeans had good adaptability on high planting density. The number of pods per node on the main stem was different according to the planting space in Dankyungkong, but it was similar in Paldalkong except planting space 20${\times}$10cm. Regardless of planting densities and varieties, the number of grains per pod on upper node of the main stem was large. Coefficient of variation of pods and grains per node in the middle part of the main stem was small. The number of grains per plant was decreased in high planting density compared to low planting density, but the number of harvested plant per unit area was increased. Optimum planting space was 25${\times}$10cm in both varieties. The ability of nodulation was bigger in Dankyungkong than in Paldalkong.

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Growth of Korean Kimchi Cabbage and Nitrogen Availability of Fertilizer in Organic Farming with Poultry Manure Compost and Natural Mineral Materials in Highland Rainshelter Cultivation (계분퇴비와 천연무기질 자재를 활용한 고랭지배추 비가림 유기재배 시 시용질소의 이용률과 배추의 생육)

  • Kim, Ki-Deog;Kwon, Yeong-Seok;Yoo, Dong-Lim;Lee, Jong-Nam;Seo, Jong-Taek
    • Korean Journal of Organic Agriculture
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    • v.21 no.1
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    • pp.69-78
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    • 2013
  • This study was carried out to evaluate nitrogen availability of applied fertilizer and to investigate yield and growth of Korean kimchi cabbage as affected by amount of fertilizer and soil fertility in organic farming applied various fertilizers in rainshelter. The head weight of Korean kimchi cabbage cultured in infertile soil (sand loam) with no amendments was very low. and that in fertile soil (clay loam) was higher than in infertile soil (sand loam). The head weight of Korean kimchi cabbage as affected by amount of fertilizer was more variable in infertile soil (sand loam) than in fertile soil (clay loam). Nitrogen availability of applied fertilizer by Korean kimchi cabbage was lower in fertile soil (clay loam) than in infertile soil (sand loam) and the lower that was, the more fertilizer applied. By application of poultry manure compost 20Mg ha-1 and natural mineral materials such as guano, phosphate rock, and potassium magnesium rock equal to amount of fertilizer recommended in conventional farming, the yield of Korean kimchi cabbage in infertile soil (sand loam) with 1% organic matter came up to 90% of the yield in fertile soil (clay loam) with 6% organic matter. Therefore natural mineral materials such as guano for N source, phosphate rock for P source, and potassium magnesium rock for K source may be able to use as environmental-friendly fertilizers in organic Korean kimchi cabbage production in highland.

Effect of Band Spotty Fertilization for Reduction of Nitrogen Fertilizer on Chinese Cabbage(Brassia campestris L.) in Plastic Film Mulching Cultivation (비닐피복 배추 재배시 국소시비에 의한 질소질비료의 절감 효과)

  • Yang, Chang-Hyu;Ryu, Chul-Hyun;Shin, Bok-Woo;Kang, Seung-Won
    • Korean Journal of Soil Science and Fertilizer
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    • v.39 no.2
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    • pp.95-101
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    • 2006
  • This study was conducted to establish a low-input fertilization technique and increase of fertilization efficiency using the band spotty applicator(1999-2000) during the cultivation of mulching for chinese cabbage(Brassia campestris L.). The obtained results such as nitrogen efficiency, yield and soil improvement after cultivation of chinese cabbage were as follows. The content of $NO_3-N$ in soil increased in band spotty fertilization(BSF) by increasing application rate from the beginning stage to the middle stage. The content of total nitrogen increased but content of organic matter, available phosphate and exchangeable potassium decreased in comparison with the soil before experiment. Growth rate of Chinese cabbage increased in band spotty fertilization plot and uptake amount of nitrogen fertilized for chinese cabbage increased by increasing of the application rate. N use efficiency was higher by 5-21% in band spotty fertilization plot than in conventional fertilization(CF) plot. Yield of chinese cabbage increased by 16% in 70% band spotty fertilization plot and increased by 20% in 100% band spotty fertilization plot. It was found that 70% band spotty fertilization was more effective as fertilization method to reduce both environmental pollution and chemical nitrogen fertilizer in plastic film mulching cultivation.

Studies on Nitrogen Fixation of Forage Legumes with 15N-Ammonium Sulfate (중질소(重質素)를 사용(使用)한 두과사료작물(豆科飼料作物)의 질소(窒素) 고정량(固定量) 측정(測定)에 관(関)한 연구(硏究))

  • Kim, Moo-Sung
    • Korean Journal of Soil Science and Fertilizer
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    • v.16 no.1
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    • pp.50-55
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    • 1983
  • Effects of nitrogen applied to grown alone and in mixture with grass and legumes of forage crops on the yield of dry matter, absorptivity, and the amount of nitrogen fixation were studied using $^{15}N$ ammonium sulfate. 1. The amount of nitrogen fixation in legume was decreased in order of alfalfa > red clover > birdsfoot trefoil, and red clover gave highest soil-nitrogen dependency. 2. Fertilizer nitrogen for the yield of dry matter was highly effective only in orchardgrass, and effective at the early stages of alfalfa and birdsfoot trefoil in case of a mixed sowing. 3. Alone and mixed sewings showed the yield of dry matter in decreasing order of alfalfa > red clover > orchardgrass > birdsfoot trefoil and orchardgrass + alfalfa > orchardgrass + red clover > orchardgrass + birdsfoot trefoil, respectively. 4. The plot of with nitrogen showed greater nitrogen uptake than the plot of without-nitrogen throughout the plots. In case of grown alone, however, difference in the absorptivity of various forage crops was decreased in order of alfalfa > red clover > orchardgrass > birdsfoot trefoil. 5. Regardless of nitrogen application, nitrogen uptake amount of orchardgrass was higher in the plot of mixture then in the plot grown alone, except the with nitrogen plot of red clover grown in mixture at the ratio of 3 : 7.

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Development and Application d A Comprehensive Case Management Model for Helping North Korean Refugees' Psycho-Social Adjustment in South Korea (탈북자의 사회적응 지원을 위한 종합형 사례관리 모형의 제시와 그 실천)

  • Um, Myung-Yong
    • Korean Journal of Social Welfare
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    • v.37
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    • pp.271-306
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    • 1999
  • This study aimed to present a comprehensive case management model which might be helpful for social workers in community social welfare agencies who works with North Korean refugees for their psychosocial adjustment in South Korea. After being constructed, the model was put into practice upon North Korean refugees. This article described the whole process of model construction and its application. Detail steps taken in this research include: (a) The researcher had 20 unstructured individual interviews with 11 North Korean refugees in order to identify psychosocial problems that need social workers' intervention; (b) Based upon the problems identified through interviews and previous literature review, program components were identified and sorted out into two phases, one of which is therapeutic phase, the other is case management phase; (c) By interlocking the two phases, the researcher proposed a comprehensive case management model whereby North Korean refugees can get psychosocial services as well as linkage services in an interactive fashion; (d) The utility of the proposed model was examined by using a couple of North Korean refugees who initially showed complicated psycho-social-economic problems. The therapeutic phase employed a cognitive-behavioral approach. The case management phase consists of: assessment and diagnosis; service planning and resource identification; linking of clients to needed services; monitoring of service delivery; and evaluation. Although the program could not go through with because of the limited contacts with North Korean refugees for security reasons, the program was turned out to be very useful in helping North Korean refugees' settling-down in South Korea. Implications for the application of the proposed model was discussed along with limitations of this study.

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Flowering and Nut Fruit Characteristics after Soil Amendment Treatments in Chestnut (Castanea crenata S. et Z.) Orchards (토양 개량제 처리에 따른 밤나무의 개화 및 종실 형질 특성)

  • Kim, Choonsig;Cho, Hyun-Seo;Lim, Jong-Taek
    • Journal of Korean Society of Forest Science
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    • v.101 no.4
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    • pp.567-573
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    • 2012
  • This study was carried out to examine the effect of soil amendment treatments [(organic fertilizer: 20 kg $tree^{-1}$; compound fertilizer+wood-char fertilizer: compound fertilizer 4 kg $tree^{-1}$+wood-char 2 kg $tree^{-1}$; lime fertilizer: 3 kg $tree^{-1}$; mixed fertilizer: compound fertilizer 1 kg $tree^{-1}$+organic fertilizer 10 kg $tree^{-1}$+wood-char 1 kg $tree^{-1}$; control (no fertilizer)] on flowering and fruit characteristics in chestnut (Castanea crenata S. et Z.) orchards in Jinju and Sancheong, Gyeongsangnam-do. Diameter of fruiting shoot increased generally after soil amendment treatments compared with the control, while number of leaf, female and male flowers were not affected by the treatments. Nut weight increased after soil amendment treatments in Jinju, but was not affected by the treatments in Sancheong. There was a positive correlation between soil pH (r=0.91) or exchangeable $Ca^{2+}$ (r=0.99) and nut weight in Jinju and a positive correlation (r=0.97) between organic carbon content and soluble solid concentration, while a negative correlation (r=-0.92) between exchangeable $Mg^{2+}$ and soluble solid concentration of nuts in Jinju. However, the nut weight and soluble solid concentration in Sancheong were not correlated with soil properties. The results indicate that the characteristics of flowering and nuts in chestnut orchards depend on soil properties after soil amendment treatments between regions which show better responses on poor sites than on good sites.

A Case Report on a Patient with lumbar HIVD(Herniated Intervertebral Disc) and Femoroacetabular Impingement, Treated by Bee Venom Pharmacopuncture and Conservative Oriental Medical Treatment (요추 추간판 탈출증과 대퇴 비구 충돌 증후군 진단 받은 환자를 대상으로 시행한 고관절 부위 봉약침 치료 및 한방 보존적 치료 치험 1례)

  • Kim, Hae-Sol;Lee, Chong-Hwan;Jeon, Jae-Yoon;Lim, Su-Jin;Bae, Young-Hyeon;Kim, Ho-Sun;Song, Ju-Hyun;Kim, Moon-Hwi;Cho, Changyoung;Jung, You-Hwa
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.9 no.2
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    • pp.81-92
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    • 2014
  • Objectives : The Purpose of this study is to investigate the clinical application of Bee venom pharmacopuncture and conservative treatment for lumbar HIVD(Herniated Intervertebral Disc) and Femoroacetabular Impingement. Methods : Patient is hospitalized at Dept. of Oriental Internal Medicine, Jaseng Oriental Medicine Hospital, diagnosed as lumbar HIVD(Herniated Intervertebral Disc) and Femoroacetabular Impingement and treated by Bee venom pharmacopuncture, herbal medicine, acupuncture and moxibustion. This study was measured by NRS(Numerical Rating Scale), ODI and EQ-5D. Results : After Bee venom pharmacopuncture and conservative oriental medical treatment, the patient's pain was controlled and NRS score was decreased. ODI and EQ-5D also were improved. Conclusions : As seen in this one case, Oriental conservative treatment and Bee venom pharmacopuncture have a positive effect to control pain with lumbar HIVD(Herniated Intervertebral Disc) and Femoroacetabular Impingement.

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A Case Report on a Patient with Osteoarthritis of the Hip Caused by Hip Dysplasia and Lumbar Spinal Stenosis, Treated by Postural Yinyang Correction of Temporomandibular Joint (비구이형성증에 의한 고관절염과 요추 척추관 협착증 환자의 턱관절자세 음양교정술을 이용한 치험 1례)

  • Lim, Jae-Eun;Kim, Kyoung-Min;Jang, Sun-Hee;Park, Eun-Jin;Lee, Young-Jun;Hong, Noo-Ri;Jang, Yeong-Suk;Yang, Su-Hyeon;Choi, Yun-Young;Oh, Da-Yoon;Lee, Soo-Jin;Kim, Cheol-Hong
    • Journal of TMJ Balancing Medicine
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    • v.9 no.1
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    • pp.12-17
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    • 2019
  • Objectives: The purpose of this study is to report the effect of Postural Yinyang Correction of Temporomandibular Joint (Functional Cerebrospinal Therapy, FCST) on a patient with Osteoarthritis of the hip caused by Hip dysplasia and Lumbar spinal stenosis. Methods: A patient with Osteoarthritis of the hip caused by Hip dysplasia and Lumbar spinal stenosis was treated at Dept. of Acupuncture & Moxibustion, ○○ University Korean Medicine Hospital from Nov 8th, 2019 to Dec 6th, 2019 and received a Korean-Western medical treatment mainly managed with FCST. This study was measured with VAS (Visual Analogue Scale), ODI (Oswestry Disability Index) and questionnaire. Results: After treatment, the patient's pain was controlled and gait ability was improved, also VAS, ODI and questionnaire score were improved. Conclusions: Korean-Western Medical Treatment mainly managed with FCST may be helpful in controling pain with Osteoarthritis of the hip caused by Hip dysplasia and Lumbar spinal stenosis, but the further researches are needed.

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