• Title/Summary/Keyword: 피리벤족심

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Safening Activity of Optically Active ${\alpha}$-Methylbenzylphenylurea toward Bensulfuron-methyl and Pyribenzoxim Injury to Rice (광학활성 ${\alpha}$-Methylbenzylphenylurea 유도체의 bensulfuron-methyl과 pyribenzoxim의 벼에 대한 약해경감효과)

  • Ryoo, Jae-Hwan
    • The Korean Journal of Pesticide Science
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    • v.9 no.2
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    • pp.153-158
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    • 2005
  • Safening activities of optically active ${\alpha}$-methylbenzylphenylureas on crop injury of rice (Oryza sativa L., cv. Tsukinohikari, japonica) caused by bensulfuron-methyl (methyl 2-[[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]methyl]benzoate) and pyribenzoxim (benzophenone o-[2,6-bis[(4,6-dimethoxy-2-pyrimidinyl)oxy]benzoyl]oxime) were investigated. Some derivatives of the optically active compounds exhibited strong safening activity against growth inhibition of rice by bensulfuron-methyl. Out of the derivatives tested, (S)-2,3-diCl and (S)-2-F-4-Me derivatives showed greater relieving activity than that of dymuron. In addition, the stress relieving activity was also obtained when they were applied at 4 days after bensulfuron-methyl treatment. On the other hand, crop injury caused by pyribenzoxim was relieved by about 95% with (S)-2-F-4-Me derivative in shoots and roots of rice seedlings.