Fact-finding Survey on Occurrence of Weeds and Herbicide Usage for Paddy Rice Cultivation in Gyeonggi Province, Korea
2013
Won, T.J., Gyeonggi Agricultural Research and Extension Services, Hwaseong, Republic of Korea | Park, J.S., Gyeonggi Agricultural Research and Extension Services, Hwaseong, Republic of Korea | Kim, S.J., Gyeonggi Agricultural Research and Extension Services, Hwaseong, Republic of Korea | Kim, H.D., Gyeonggi Agricultural Research and Extension Services, Hwaseong, Republic of Korea
A survey was performed to investigate major paddy field weeds and frequently used herbicides in Gyeonggi province, Korea in order to establish a system to efficiently control herbicide-resistant weeds. The dominant paddy field weeds included Echinochloa spp. (22%), Eleocharis kuroguwai (14%), Sagittaria trifolia (13%), Scirpus juncoides (12%), Monochoria vaginalis (9%) and Sagittaria pygmaea (7%), and the most widely used herbicides were butachlor 33% CS (25%), benzobicyclon + fentrazamide + imazosulfuron 11.5% SC (9%), cyclosulfamuron + mefenacet 22.2% SC (9%), butachlor 5% GR (6%), and oxadiazon 12% EC (6%) in Gyeonggi province, Korea. Many paddy rice growers considered S. juncoides, M. vaginalis, S. pygmaea and C. difformis as herbicide-resistant weeds. An extensive research deserves to be conducted to monitor occurrence of herbicideresistant paddy weeds in Gyeonggi province, Korea.
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