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http://dx.doi.org/10.5660/WTS.2015.4.3.151

Effective Weed Control in Paddy Field Simultaneously Dominated by Herbicide-Resistant Weeds, Echinochloa oryzoicola, Monochoria vaginalis and Scirpus juncoides  

Park, Tae Seon (National Institute of Crop Science, RDA)
Cho, Hyeoun Suk (National Institute of Crop Science, RDA)
Hwang, Jae Bok (National Institute of Crop Science, RDA)
Ku, Bon il (National Institute of Crop Science, RDA)
Kim, Hag Sin (National Institute of Crop Science, RDA)
Seo, Myung Chul (National Institute of Crop Science, RDA)
Park, Hong Kyu (National Institute of Crop Science, RDA)
Lee, Keon Hui (National Institute of Crop Science, RDA)
Publication Information
Weed & Turfgrass Science / v.4, no.3, 2015 , pp. 151-158 More about this Journal
Abstract
This study was conducted to establish the effective weed management methods in rice field simultaneously dominated by the herbicide resistant Echinochloa oryzicola, Monochoria vaginalis and Scirpus juncoides. Herbicides registered for use before transplanting, oxadiazon 12% EC, pyrazolate 36% SC, pretilachlor 14% EC and thiobencarb 50% EC were effective until 0.5 leaf stage of herbicide resistant Echinochloa oryzoides. Herbicides registered for use after transplanting, fentrazamide 1% GR and mefenacet 18% SC were effective until 2 leaf stage of herbicide resistant Echinochloa oryzicola and triafamone 0.98% SC was possible to control up to 4 leaf stage. HPPD inhibitors, benzobicyclon, mesotrione and tefuryltrione SC, were simultaneously effective to SU herbicide-resistant Monochoria vaginalis and Scirpus juncoides. Herbicides registered for use before transplanting, benzobicyclon + oxadiargyl EC out of the tested herbicide was most effective in rice field simultaneously dominated by the herbicide resistant Echinochloa oryzicola, Monochoria vaginalis and Scirpus juncoides. Its effectiveness rises in proportion to flooding duration. Mazosulfuron GR, a herbicides registered for use after transplanting was most effective without phytotoxicity until 60 days after transplanting in rice field simultaneously dominated by the herbicide resistant Echinochloa oryzicola.
Keywords
Echinochloa oryzoides; Herbicide; Monochoria vaginalis; Resistance; Scirpus juncoides; Weed control;
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