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http://dx.doi.org/10.5660/WTS.2013.2.1.001

A Survey on Farm Management and Occurrence Area of Herbicide Resistant Paddy Weeds in Chungbuk Province  

Kim, Eun-Jeong (Chungbuk Agricultural Research and Extension Services)
Park, Jae-Seong (Chungbuk Agricultural Research and Extension Services)
Lee, Chae-Young (Chungbuk Agricultural Research and Extension Services)
Lim, Sang-Cheol (Chungbuk Agricultural Research and Extension Services)
Song, Beom-Heon (Chungbuk National University)
Publication Information
Weed & Turfgrass Science / v.2, no.1, 2013 , pp. 1-7 More about this Journal
Abstract
Studies were carried out to provide basic information for establishing the weed control in Chungbuk, Korea. The present surveys targeting 260 farmers in Chungbuk province were conducted for the cultivation system, weeds occurrence and usage of herbicides. To estimate the occurring area of herbicide resistant weeds, soil samples from 400 paddy fields were collected twice on August, 2011 and April, 2012. In the results of survey, the 99.6% of farmers used the rice planting machine and the 78% of the farmers disseminated herbicides twice to control weeds before and after planting rice. The most commonly used herbicide were as follows; soil-applied herbicide : butachlor 46.6%, mid-term herbicide : mefenacet + pyrazosulfuron-ethyl 10.7%, foliar herbicides : bentazone 62%. The dominant paddy field weeds included Echinochloa crusgalli (16.2%), Scirpus juncoides (12.2%), Monochoria vaginalis (11.9%) and Sagittaria trifolia (9.5%). Occurrence area of sulfonylurea herbicide resistant weeds was 13,659 ha in 26.8% of the paddy area. Monochoria vaginalis showed the highest with 4,605 ha (36.4%) followed Scirpus juncoides (30.7%), and Lindernia dubia (10.6%) at 2011. Monochoria vaginalis and Scirpus juncoides occurred were evenly distributed and the most problematic weed in Chungbuk, Korea.
Keywords
Chungbuk; Herbicidal resistance; Paddy field; Sulfonylurea;
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Times Cited By KSCI : 11  (Citation Analysis)
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