Selective Herbicidal Activity of 3, 5-Dichloropyridyloxy-phenoxypropionamidoxyacetic Acid Derivatives between Wheat and Wild Oat

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  • 2-[4-(2-ピリジルオキシ)フェノキシ]プロピオンアミドキシ酢酸誘導体のコムギ・カラスムギ間における選択的除草活性
  • Selective Herbicidal Activity of 3 5 Di

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Wild oat (Avena fatua L.) is one of the most troublesome weeds in wheat (Triticum aestivum L.) and difficult to control because of its adaptability and competitiveness to wheat. Diclofop-methyl has been extensively used to control postemergence wild oat. The herbicidal activity of diclofop-methyl is less than the recent aryloxyphenoxypropionate herbicides. Some newly synthesized derivatives of 2-[4-(3, 5-dichloro-2-pyridyloxy)phenoxy]propionamidoxyacetic acid showed selectivity between wheat and wild oat. In these compounds, N-ethyl-2-[4-(3, 5-dichloro-2-pyridyloxy) phenoxy]propionamidoxyacetamide (23) showed higher herbicidal activity against wild oat than diclofop-methyl and a comparable selectivity between wheat and wild oat.

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