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http://dx.doi.org/10.5660/KJWS.2012.32.2.127

Fact-finding Survey on The Use of Paddy Field Herbicides at Farmer's Level in Gyeongsangbuk-do Province  

Kim, Sang-Kuk (Gyeongsangbuk-do Provincial Agricultural Research & Extension Services)
Han, Youn-Yul (Gyeongsangbuk-do Provincial Agricultural Research & Extension Services)
Shin, Jong-Hee (Gyeongsangbuk-do Provincial Agricultural Research & Extension Services)
Kim, Su-Yong (Gyeongsangbuk-do Provincial Agricultural Research & Extension Services)
Won, Jong-Gun (Youngyang Pepper Experiment Station, Gyeongsangbuk-do Provincial Agricultural Research & Extension Services)
Kim, Hak-Yoon (Department of Global Environment, Keimyung University)
Publication Information
Korean Journal of Weed Science / v.32, no.2, 2012 , pp. 127-132 More about this Journal
Abstract
Field survey on the weed occurrence and the use of herbicides was carried out targeting 214 rice cultivating farmers at Gyeongsangbuk-do. 96.2% of farmers did machine planting in late May and this is 68.0% of total cultivating area. Spring plowing was first with 54.6%, followed by spring-fall and fall plowing with 24.8% and 15.0%, respectively. 75% of the farmers treated herbicide twice. 57.5% of them treated herbicide before transplanting and treated at post-emergence again. In case of only application, 84% of the farmers treated herbicide before transplanting. Twenty-three species were occurred at Gyeongsangbuk-do and Echinochloa spp. was the most dominant with 20.8%, Sagittaria trifolia was second with 10.4%, followed by Monochoria vaginalis and Sagittaria pygmaea with 9.9% and 9.7%, respectively. Sagittaria pygmaea was the most difficult to control followed by Echinochloa spp., M. vaginalis, and S. trifolia.
Keywords
fact-finding survey; herbicide; paddy field; weed;
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