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Herbicidal activity of Korean native plants (I)  

Kim, Hee-Yeon (Division of Biological Environment, Kangwon National University)
Choi, Hae-Jin (Division of Biological Environment, Kangwon National University)
Lim, Sang-Hyun (Gangwondo Agricultural Research and Extension Services)
Heo, Su-Jeong (Gangwondo Agricultural Research and Extension Services)
Han, Sang-Sub (Department of Forest Resource, Chonbuk National University)
Kim, Do-Soon (LG Life Sciences, Ltd.)
Hwang, Ki-Hwan (LG Life Sciences, Ltd.)
Kim, Song-Mun (Division of Biological Environment, Kangwon National University)
Publication Information
The Korean Journal of Pesticide Science / v.7, no.4, 2003 , pp. 248-257 More about this Journal
Abstract
The objective of this experiment was to search plant species with herbicidal activity in Korea. Two hundred native plants were collected and their methanol extracts were obtained. Herbicidal activity of methanol extracts were determined by seed bioassay using canola (Brassica napus L.) seedlings. Six plants such as Staphylea bumalda, Wistaria floribunda, Allium victorialis, Rumex crispus, Chionanthus retusa, and Ulmus parvifolia were highly herbicidal: their $GR_{50}$ values were < $1,000{\mu}g\;g^{-1}$. In addition, seventeen plants such as Galium spurium, Zelkova serrata, Campsis grandiflora, Eucommia ulmoides, Sorbus commixta, Deutzia glabrata, Cercis chinensis, Alnus hirsuta, Zanthoxylum schinifolium, Quercus acutissima, Robinia pseudoacacia, Gleditsia japonica, Kerria japonica, Ligustrum obtusifolium, Thuja orientalis, Chamaecyparis obtusa, and Pulsatilla koreana showed herbicidal activity: their $GR_{50}$ values were between 1,000 and $2,000{\mu}g\;g^{-1}$. However, 177 plants showed no herbicidal activity. Plants with herbicidal activity found in this study could be used for weed management and herbicidal compounds in such herbicidal plants could be used as lead compounds in the development of new herbicides.
Keywords
Korean native plants; herbicidal activity; anemonin; chrysophanic acid;
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