Disclosed are compounds exhibiting sufficient herbicidal activity at low application dosage when they are applied to soils and foliage and an agrochemical composition using the same in particular herbicides. The compounds are triazine derivatives represented by following Formula 1 or salts thereof and the herbicides containing them: [Chem. 28] wherein in the formula, R1 represents a hydrogen atom a C1-C12 alkyl group a C2-C6 alkenyl group, etc., R2 represents a C1-C12 alkyl group, etc., Y and Z represent an oxygen atom or a sulfur atom, and A represents a 5- or 6-membered cyclic group which may contain a nitrogen atom, an oxygen atom, or a sulfur atom. wherein in the formula R1 represents a hydrogen atom a C1-C12 alkyl group a C2-C6 alkenyl group etc. R2 represents a C1-C12 alkyl group etc. Y and Z represent an oxygen atom or a sulfur atom and A represents a 5- or 6-membered cyclic group which may contain a nitrogen atom an oxygen atom or a sulfur atom.
