• Title/Summary/Keyword: Lychnis cognate

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Growth Characteristics of Lychnis Cognate and Soil Moisture by Organic Mulching Material Type in Extensive Green Roof System (저관리 경량형 옥상녹화에서 유기물 멀칭재 유형에 따른 토양수분과 동자꽃의 생육 특성)

  • Park, Sun Young;Chae, Ye Ji;Choi, Seung Yong;Yoon, Yong Han;Ju, Jin Hee
    • Ecology and Resilient Infrastructure
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    • v.9 no.2
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    • pp.107-112
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    • 2022
  • This study was conducted to investigate the effects of mulching materials in extensive green roof system by comparing and analyzing the soil moisture content and growth response of Lychnis cognata according to the types of organic mulching materials. The experimental group consisted of a control group that did not use mulching material (Cont.) and a total of five treatment groups, including cocochip (C.O), woodchip (W.O), straw (S.T), and sawdust (S.A), depending on the mulching material. The soil moisture content according to the type of organic mulching material was high in the order of W.O > S.T > Cont. > C.O > S.A, and there was a significant difference especially in S.A. The plant height showed good growth in the order of S.T > Cont. > C.O > W.O > S.A, and there was no significant difference by mulching materials in other growth items except for plant height. Both the chlorophyll and plant water contents were superior to those of untreated group, so the treatment of organic mulching materials is considered to be effective in maintaining the chlorophyll and plant water contents of Lychnis cognata. In particular, the soil moisture content was affected by the characteristics of the mulching material itself. Based on these results, it is required to use a mulching material suitable for the characteristics of each plant in extensive green roof system and it is considered that this can be overcome through organic mulching when selecting a plant species that is weak to water stress.