BROAD-LEAVED PERENNIAL WEED CONTROL AGENT FOR GRASS, AND METHOD FOR CONTROL OF BROAD-LEAVED PERENNIAL WEED IN GRASS

摘要

Disclosed are: a broad-leaved perennial weed control agent for a grass, which has a high controlling effect on a broad-leaved perennial weed which is hardly controlled by a conventional herbicide for a grass and/or a weed having resistance against a conventional herbicide and has a satisfactory level of safety against a grass; and a method for controlling a broad-leaved perennial weed for a grass by applying the control agent to a soil or a stem/leaf of the weed. Specifically disclosed are: a broad-leaved perennial weed control agent for a grass, which comprises a 1,5-diphenyl-1H-1,2,4-triazole-3-carboxylic acid amide derivative represented by the formula (1) as an active ingredient; and a method for controlling a broad-leaved perennial weed in a grass, which is characterized by applying the control agent to a soil or a stem/leaf of the weed. (1) wherein R represents an alkyl group having 1 to 10 carbon atoms which may be substituted by a fluorine atom or the like; X<SUB>1</SUB> represents a halogen atom or an alkyl group having 1 to 3 carbon atoms; X<SUB>2</SUB> represents a hydrogen atom or a halogen atom; Y<SUB>1</SUB> and Y<SUB>2</SUB> independently represent a hydrogen atom or a fluorine atom.