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http://dx.doi.org/10.5660/WTS.2017.6.3.203

Change of Efficacy and Phytotoxicity of Paddy Herbicide under Temperature Rise  

Park, Tae-Sun (Crop Production and Physiology Division, National Institute of Crop Science, RDA)
Hwang, Jae-Bok (Crop Production and Physiology Division, National Institute of Crop Science, RDA)
Bae, Hee-Soo (Crop Production and Physiology Division, National Institute of Crop Science, RDA)
Park, Hong-Kyu (Crop Production and Physiology Division, National Institute of Crop Science, RDA)
Lee, Gun-Hwi (Crop Production and Physiology Division, National Institute of Crop Science, RDA)
Publication Information
Weed & Turfgrass Science / v.6, no.3, 2017 , pp. 203-211 More about this Journal
Abstract
This study was conducted to investigate the phytotoxicity of main rice varieties and control efficacy of HPPD inhibitor to major paddy weeds at the time of temperature rise due to climate change. Phytotoxicity of herbicide to rice was increased as temperature was increased, and more severe in root than shoot. The phytotoxicity of japonica rice cultivars for the rice were mild enough to recover. However, glutinous rice, super high yield rice, and Tongil rice varieties were damaged enough to decrease the yield. Shindongjinbyeo transplanted by June 15, showed phytotoxicity enough to recover. However, in the rice field on June 30 and on July 15, the rice showed a remarkable inhibition. The control effect of Monochoria vaginalis and Scirpus juncoides was more than 90% under the temperature condition controlled artificially. However, Echinochloa oryzicola was controlled 40% at $27.5^{\circ}C$, which is a high temperature condition. In rice fields with different transplanting times, annual weeds except for E. oryzicola were highly controlled by 90% or more regardless of the time of transplanting.
Keywords
Climate change; Control efficacy; Herbicide; Phytotoxicity; Temperature rise; Weed;
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Times Cited By KSCI : 2  (Citation Analysis)
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