• Title/Summary/Keyword: Seeding effect

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Raising Seeding Status of Onion under Different District in Southern Part of Korea (남부지역에서의 양파 육묘실태)

  • 정동희
    • Korean Journal of Plant Resources
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    • v.9 no.2
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    • pp.113-119
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    • 1996
  • This study inverstigates growing seedling of onion for 91 farmhouses at Muan, Hampyeong and Sinan which are major areas of production from Jan. to Apr., 1994 to enhance the research effect of onion and then the following results are obtained. Over 60% of the farmhouses have cultured onion continuously over 11years. Early mature variety cultured is over 9 varieties and among them Kinkyu variety is cultured most frequently. Late mature variety is over 13 and Changyongdaego, Bonganwhang and Chunjudaego varieties are cultured most. Most of the farmhouses used seeds less than 6 dl at small area less than $40m^2$ and especially in the case of early variety ,they purchased it at seed stores with 15,000-20,000 won/dl and sowed them with broadcasting method. Amount of fertilizer level of onion seed is ranged from nonfertilizer level to $16.8g/m^ and most of the farmhouses employ molding after seeding with straw and compost and they did not use thinning. Irrigation is performed by 1-4 times before sprouting of onion seed and most of the farmhouses transplant long nursery plant over 46 days hand weeding is used.

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Allelopathic Potentials of Larix leptolepis (S. et Z.) Gorden on Germination and Seeding Growth of Selected Species (植物의 發芽와 生長에 미치는 일본잎갈나무의 알레로패티 效果)

  • Ko, Byung Kook;Bong-Seop Kil
    • The Korean Journal of Ecology
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    • v.8 no.1
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    • pp.15-19
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    • 1985
  • A number of field surveys have been performed in larch (Larix leptolepsis) forest floor in which any seeding of this species never find ther. In laboratory work, aqueous extracts from leaves, roots and stems of larch were provided and used to bioassay. Among them, germination and seedling growth of selected species were the most inhibitory in leaves extracts. Though germiation percentage of a species showed high compared with control, its dry weight after a given period grown were clearly low. The results due to be considered by allelopathic effect. And syringic acid and p-hydroxybenzoic acid were identified by HPLC from larch leaves. It is assumed that these phenolic acids affect on other species as allelochemicals of larch.

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Probabilistic Modeling of Fiber Length Segments within a Bounded Area of Two-Dimensional Fiber Webs

  • Chun, Heui-Ju
    • Communications for Statistical Applications and Methods
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    • v.18 no.3
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    • pp.301-317
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    • 2011
  • Statistical and probabilistic behaviors of fibers forming fiber webs of all kinds are of great significance in the determination of the uniformity and physical properties of the webs commonly found in many industrial products such as filters, membranes and non-woven fabrics. However, in studying the spatial geometry of the webs the observations must be theoretically as well as experimentally confined within a specified unit area. This paper provides a general theory and framework for computer simulation for quantifying the fiber segments bounded by the unit area in consideration of the "edge effects" resulting from the truncated length segments within the boundary. The probability density function and the first and second moments of the length segments found within the counting region were derived by properly defining the seeding region and counting region.

The Effect of Korean Ginseng on Growth and Harvest of the Rice Plant (고려인삼이 벼의 생장 및 수확에 미치는 영향)

  • 주충노;임수길
    • Journal of Ginseng Research
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    • v.11 no.1
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    • pp.66-76
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    • 1987
  • When rice seeds were rinsed in If) Korean ginseng tea (KG 722, Korean Ginseng Product Co. Ltd. made) for 28 hours prior to seeding, the early growth was found relatively fast and their resistance against blight and harmful insects was increased. Rice yield showed that control group, rinsing group and spraying group were 514 kg/10a, 562 kg/ 10a and 571 kg/ 10a respectively. However, rinsing and spraying groups were 590 kg/ 10a (leaf spraying) and 605 kg/ 10a (spray immediate after seeding) respectively.

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