• Weed & Turfgrass Science
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• v.4 no.3
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• pp.236-242
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• 2015

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.

• Proceedings of the Korean Society of Grassland Science Conference
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• 1999.06a
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• pp.81.1-81
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• 1999

초지 및 조사료포장에 자생하여 사료작물의 생육을 저해하고 수량과 품질을 저하시키는 외래잡초의 분포를 조사하여 적정 방제법을 구명하고 유입경로를 차단하여 조사료포장의 생태적 환경을 개선코자 본 시험을 실시하였던 바, 그 결과를 요약하면 다음과 같다. 1. 새로운 외래잡초로서 가축에 해를 미치거나 뜯지 않아 초지를 부실화시키는 잡초는 도깨비가지, 도꼬마리, 독말풀, 붉은서나물, 개꽃아재비, 방가지똥, 미국자리공 등이었다.(중략)

• Life and Agrochemicals
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• s.263
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• pp.38-39
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• 2010

• Life and Agrochemicals
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• s.262
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• pp.38-39
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• 2010

• Life and Agrochemicals
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• s.246
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• pp.54-55
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• 2009

유럽이 원산지인 외래잡초로 다년생이다. 목초지에 발생시 초지의 품질을 떨어뜨리고 애기수영, 쑥 등의 다른 잡초의 발생을 촉진하여 초지를 황폐화시킬 수 있다. 경엽처리 제초제를 살포할 경우 사용에 주의하여야 한다.

• Life and Agrochemicals
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• s.247
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• pp.50-51
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• 2009

북아메리카가 원산지인 일년생잡초로 외래잡초의 하나이다. 잎 가장자리에 톱니 유무가 미국외풀과 밭뚝외풀의 차이점이다. 벼 생육초기에 피해가 현저히 나타나며 방제 소홀시 44%까지 벼 수량이 감소된다.

• Weed & Turfgrass Science
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• v.3 no.4
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• pp.284-291
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• 2014

We surveyed the distribution of exotic weeds in the 350 upland crop fields of Gyeonggi-do. The exotic weeds were summarized as 78 taxa including 19 families, 52 genera, 74 species and 4 varieties. Among the total exotic weeds, the summer annuals were 48.7%, the winter annuals 28.2%, and the perennials 23.1%. Compositae was dominant family (32%), followed by Gramineae (8%), Polygonaceae (8%) and Malvaceae (7%). Dominant exotic weeds in northern Gyeonggi-do were Amaranthus lividus, Ambrosia trifida, Chenopodium album, Bidens frondosa and Erigeron Canadensis, and in southern Gyeonggi-do were Chenopodium album, Erigeron Canadensis, Erigeron annuus, Taraxacum officinale and Galinsoga ciliate. The most dominant exotic weeds in the Gyeonggi-do were Chenopodium album, followed by Amaranthus blitum, Erigeron canadensis. Canonical correspondence analysis for investigation of correlation between exotic weeds occurred in northern and southern Gyeonggi-do showed that the exotic weeds in northern Gyeonggi-do were more diverse then in southern Gyeonggi-do. This information could be useful for establishment of exotic weed control methods in Gyeonggi-do.

• Agrochemical news magazine
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• v.16 no.6 s.129
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• pp.18-23
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• 1995

• Life and Agrochemicals
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• s.252
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• pp.44-45
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• 2009

요즘 물가나 빈터 등에서 자주 볼수 있는 미국에서 건너온 외래잡초이다. 토양처리제는 설포닐우레아계 제초제를 교호살포하여 처리하며 경엽처리제로는 피리벤족심유제, 비스피리박소디움액제 등으로 방제한다.

• Weed & Turfgrass Science
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• v.7 no.1
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• pp.1-14
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• 2018

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 $1^{st}$ (1876-1921), $2^{nd}$ (1922-1963), and $3^{rd}$ (1964-now) period, respectively. The exotic weeds introduced in $2^{nd}$ and $3^{rd}$ period, included 12 Invasive Alien Species. The weeds from $1^{st}$ 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.