National Institute of Crop Sciences, RDA1
National Institute of Agricultural Sciences, RDA2
Institute for Future Environmental Ecology3
Gangwon-do Agricultural Research & Extension Services4
Chungchengbuk-do Agricultural Research & Extension Services5
Chungnam National University6
Jeollabuk-do Agricultural Research & Extension Services7
Jeollanam-do Agricultural Research & Extension Services8
Bio-Plant Environment Research Center9
Gyeongsangbuk-do Agricultural Research & Extension Services10
Gyeongsangnam-do Agricultural Research & Extension Services11
We surveyed the distribution of exotic weeds in Korean paddy fields, uplands, orchards and pastures from 12,568 sites during 3 years, 2013, 2014 and 2015. As a result, 166 species in 28 families were identified and 7, 130, 126, and 80 species were surveyed from paddy fields, uplands, orchards, and pastures, respectively. Among the 166 species, 128 species were annual weed and 38 species were perennial weed. Especially, winter annual exotic weeds were 63 species (37.8%). 46, 16, and 104 exotic weeds were classified to their introduction period of 1st (1876-1921), 2nd (1922-1963), and 3rd (1964-now) period, respectively. The exotic weeds introduced in 2nd and 3rd period, included 12 Invasive Alien Species. The weeds from 1st period, however, could be grouped into native weeds as the ‘naturalized weed’ and managed the same as the native weeds. Especially, some exotic weeds such as common groundsel were widely distributed in Korean crop lands, and they will become more problematic in near future. Therefore, systemic research from the biology to management should be conducted and the results from the studies should be applied practically.
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