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http://dx.doi.org/10.5660/WTS.2015.4.3.236

Distribution of Exotic Weeds on Crop Fields in Jeju-do  

Kim, Chang-Seok (Crop Protection Division, National Academy of Agricultural Science, RDA)
Chung, Young-Jae (Department of life science and biotechnology, Shingyeong University)
Lee, In-Yong (Crop Protection Division, National Academy of Agricultural Science, RDA)
Lee, Jeong-ran (Crop Protection Division, National Academy of Agricultural Science, RDA)
Song, Hee-Kun (Hankooksambong Co., Ltd.)
Oh, Young-Ju (Institute for Future Environmental Ecology Co., Ltd.)
Publication Information
Weed & Turfgrass Science / v.4, no.3, 2015 , pp. 236-242 More about this Journal
Abstract
We surveyed the distribution of exotic weeds in the 141 crop fields of Jeju island. The exotic weeds were summarized as 66 taxa including 18 families, 50 genera, 64 species and 2 varieties. In winter crop fields there were 45 species of exotic seeds in 18 families, in summer crop fields 50 species in 16 families, and in perennial crop fields 39 species in 17 families. Total exotic weeds were classified to 39.4% of summer annuals, 36.4% of winter annuals, 7.6% of summer and winter annuals, and 16.7% of perennials. The ratio of summer annuals were high in the summer crop fields. Compositae was dominant family, followed by Gramineae, Malvaceae and Solanaceae. Malvaceae did not appear in perennial crop fields. Dominant exotic weeds in winter crop fields were Chenopodium album, Amaranthus viridis, Senecio vulgaris and Coronopus didymus, in summer crop fields, Chenopodium album, Amaranthus viridis, Senecio vulgaris and Sonchus oleraceus and in perennial crop fields, Conyza sumatrensis, Gnaphalium calviceps and Senecio vulgaris. The dominant exotic weeds in the crop fields of Jeju island were Chenopodium album, followed by Amaranthus viridis, Senecio vulgaris, and Conyza sumatrensis. This information could be useful for establishment of exotic weed control methods in Jeju island.
Keywords
Crop field; Dominant species; Exotic weed; Jeju island;
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