Novel 2-(4-(2′-fluoro-4′-cyanophenoxy)phenoxy)alkanoic acids and agriculturally acceptable derivatives thereof are selective postemergent herbicides for the control of grassy weeds in valuable crops. The novel herbicides are surprisingly selective, i.e., exhibit little or no phytotoxic effects, to wheat, barley and especially rice at concentrations that control undesired weed grasses.
新型 2-(4-(2′-
氟-4′-
氰基苯氧基)苯氧基)烷酸及其农业上可接受的衍
生物是一种选择性苗后
除草剂,可用于控制珍贵作物中的禾本科杂草。这些新型
除草剂具有令人惊奇的选择性,即对小麦、大麦,特别是
水稻的植物毒性作用很小或没有,其浓度可控制不期望的禾本科杂草。