• Title/Summary/Keyword: 승주-순천지역

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Geochemistry of Orthogneisses in the Seungju-Suncheon Area, Korea (승주-순천 지역에 분포하는 정편마암류의 지구화학적 특성)

  • Ahn, Kun-Sang;Oh, Chang-Whan;Park, Bae-Young
    • Journal of the Korean earth science society
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    • v.22 no.3
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    • pp.163-178
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    • 2001
  • Granite gneiss, pophyroblastic gneiss and leucocratic gneiss are widely distributed in the Seungju-Suncheon area, the southwestern part of the Sobacksan Massif, Korea. These orthogneisses show intrusive relationships in outcrops of the study area. This study focuses on the geochemical properties and the tectonic environments for the original rocks of these orthogneisses. The pophyroblastic gneiss is plotted in diorite and granodiorite domain, and granite gneiss and leucocratic gneiss are plotted in both of granodiorite and granite domains on lUGS silica-alkali diagram. Geochemical properies of major elements suggest that these rocks are sub-alkali rock series, and were formed from S-type magma which generated in syn-collision tectonic environment. Discrimination diagrams using HFS elements suggest that original rocks of the three orthogneisses were granitoid of calc-alkali rock series, and were formed in syn-collision environment.

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Studies on the Indigenous Vesicular-Arbuscular Mycorrhizal Fungi(VAMF) in Horticultural Crops Grown Under Greenhouse II. Identification of the Indigenous VAMF Distributed in Greenhouse Soil (시설원예(施設園藝) 작물(作物)에서 토착(土着) VA균근균(菌根菌)에 관한 연구 II. VA균근균(菌根菌)의 동정(同定))

  • Sohn, Bo-Kyoon;Kim, Kwang-Sik
    • Korean Journal of Soil Science and Fertilizer
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    • v.24 no.4
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    • pp.293-301
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    • 1991
  • Spores of the family Clomaceae, Acaulosporaceae. and Gigasporaceae in the ord er Clomales. isolated from greenhouse soils grown horticultural crop in the southern region of Korea, included those of the following species : Acaulospora biretculata Rothwell & Trappe, A. appendiculata Spain, Sievering & Schenck, A. foveata Trappe & Janos, A. denticulata Sievering and Toro. A. elegans Trappe & Gerd., A. rehmii Sieverding & Toro in Acaulospora species, Gigaspora gigantea (Nicol. & Gerd.) Cerd. & Trappe, G. decipiens Hall & Abbott in Gigaspora species, Glomus ambisporum Schenck & Smith, G. hoi Berch & Trappe, G. caledoniwn (Nicol. & Gerd.) Trappe & Gerd. in Glomus species, Scutellispora aurigloba (Hall) Walker & Sanders, S. calospora (Nicol. & Gerd.) Walker & Sanders, S. coralloidea (Trappe, Gerd. & Ho) Walker & Sanders in Scutellispora species. Sporocarps of Sclerocystis pachycaulis Wu & Chen were also found.

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Studies on the Indigenous Vesicular-Arbuscular Mycorrhizal Fungi(VAMF) in Horticultural Crops Grown Under Greenhouse -I. Spore Density and Root Colonization of the Indigenous VAMF in Soil of Some Horticultural Crops (시설원예(施設園藝) 작물(作物)에서 토착(土着) VA균근균(菌根菌)에 관한 연구(硏究) -I. 감염양상(感染樣相)과 밀도(密度))

  • Sohn, Bo-Kyoon;Huh, Sang-Man;Kim, Kwang-Sik
    • Korean Journal of Soil Science and Fertilizer
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    • v.24 no.3
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    • pp.225-233
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    • 1991
  • This study was conducted to evaluate the potential of indigenous vesicular-arbuscular mycorrhizal fungi(VAMF) in the rhizosphere soil of horticultural crops grown under greenhouse and open-field condition, in the southern area of Kores. Soil samples collected from the rhizosphere of some sellected horticultural crops, such as cucumber, hot pepper, lettuca, tomato and eggplant grown under greenhouse or open-field condition. All tested crops are considered as mycorrhizal plants. The infection rate of horticultural crops investigated ranged from 38% to 70%, hot pepper and eggplant grown under greenhouse condition showed the highest infection being 66.0% and 70.0%, respectively. Spore densities were from 4.8 to 20.0g-1 on dried soil basis. Spore densities of VAMF in the rhizosphere soils under greenhouse condition were higher than that of open-field conditions. The highest distribution of spores in diameter ranged from $75{\mu}m$ to $106{\mu}m$ in the rhizosphere soil of lettuce, cucumber and tomato while those in hot pepper and eggplant ranged from $75{\mu}m$ to $250{\mu}m$. Glomus sp.-type spores predominated in the slightly acid soil(pH 6.3), while Acaulospora sp.-type spores greatly predominated in the very strongly acid field(pH 4.9).

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