A herbicide exhibiting high herbicidal activity against a variety of weeds and being highly safe for useful crops can be obtained through the use of a heterocyclic compound represented by the following general formula (I):
wherein R represents a group represented by the following formula:
X represents an oxygen atom or a sulfur atom; R¹ represents a halogen atom or a lower alkyl group; R² represents a hydrogen atom or a methyl group; R³ represents a halogen atom, a lower alkyl group, a lower haloalkyl group, a lower alkoxy group, a lower alkylthio group, a cyano group or -COOR⁴ (R⁴ is a lower alkyl group, a lower alkoxyalkyl group or a tetrahydrofurfuryl group); m is 0, 1 or 2 and n is 0, 1, 2 or 3.
通过使用由下式通式(I)表示的
杂环化合物,可获得一种对多种杂草具有高除草活性且对有用作物高度安全的
除草剂:
其中 R 代表下式所表示的基团:
X 代表氧原子或
硫原子; R¹ 代表卤素原子或低级烷基; R² 代表氢原子或甲基;R³ 代表卤素原子、低级烷基、低级卤代烷基、低级烷氧基、低级烷
硫基、
氰基或 -COOR⁴(R⁴ 是低级烷基、低级烷氧基烷基或四氢糠基);m 是 0、1 或 2,n 是 0、1、2 或 3。