Weed Flora Diversity and Composition on Upland Field of Korea
2015
Lee, I.Y., National Academy of Agricultural Science, RDA, Wanju, Republic of Korea | Oh, Y.J., Institute for Future Environmental Ecology, Jeonju, Republic of Korea | Hong, S.H., Institute for Future Environmental Ecology, Jeonju, Republic of Korea | Choi, J.K., Gangwon-do Agricultural Research and Extension Services, Chuncheon, Republic of Korea | Heo, S.J., Gangwon-do Agricultural Research and Extension Services, Chuncheon, Republic of Korea | Lee, C.Y., Chungchengbuk-do Agricultural Research and Extension Services, Chengju, Republic of Korea | Hwang, K.S., Chungnam National University, Daejeon, Republic of Korea | Park, K.W., Chungnam National University, Daejeon, Republic of Korea | Cho, S.H., Jeollabuk-do Agricultural Research and Extension Services, Iksan, Republic of Korea | Kwon, O.D., Jeollanam-do Agricultural Research and Extension Services, Naju, Republic of Korea | Im, I.B., Bio-Plant Environment Research Center, Gwangju, Republic of Korea | Kim, S.K., Gyeongsangbuk-do Agricultural Research and Extension Services, Daegu, Republic of Korea | Seong, D.G., Gyeongsangnam-do Agricultural Research and Extension Services, Jinju, Republic of Korea | Chung, Y.J., Shingyeong University, Hwaseong, Republic of Korea | Kim, C.S., National Academy of Agricultural Science, RDA, Wanju, Republic of Korea | Lee, J., National Academy of Agricultural Science, RDA, Wanju, Republic of Korea | Seo, H.A., National Academy of Agricultural Science, RDA, Wanju, Republic of Korea | Jang, H.M., National Academy of Agricultural Science, RDA, Wanju, Republic of Korea
Surveys of weed species on upland fields were conducted in Korea to investigate the occurrence of weed flora from April to May 2014 for winter crop fields and from July to August 2014 for summer crop fields. From the nation-wide survey, 375 weed species in 50 families were identified and classified to 162 annuals, 78 biennials and 135 perennials. Based on the occurrence ratio, the most weed species belonged to Compositae (73 species). 44 and 25 weed species belonged to Poaceae and Polygonaceae, respectively, and these 183 weed species in the most five families accounted for 49% of total weed occurrence. While 287 weed species in 45 families occurred in the winter crop fields, 339 weed species in 47 families occurred in summer crop fields. The most dominant weed species in Korean upland fields were Digitaria ciliaris, followed by Portulaca oleracea, Acalypha australis, Chenopodium album, Rorippa palustris etc. 129 weed species in 25 families were considered as exotic weeds. Based on the importance analysis, the highest value was C. album followed by Amaranthus lividus, Conyza canadensis etc. This information could be useful for estimation of future weed occurrence, weed population dynamics and establishment of weed control methods in upland fields of Korea.
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