HERBICIDAL COMPOSITION HAVING SYNERGETIC EFFECT AND COMPRISING N-(SUBSTITUTED PHENYL)-TETRAHYDROPHTHALIMIDE DERIVATIVE AND N-(SUBSTITUTED PHENYL)-N',N'-DIMETHYLUREA DERIVATIVE, AS WELL AS UTILIZATION OF THE COMPOSITION FOR EXTERMINATING WHEEDS

摘要

A herbicidal composition which comprises as the active ingredients (a) at lease one of compounds of the formula: CHEM wherein R is a hydrogen atom or a methyl group and (b) at least one of 3-(4-isopropylphenyl)-1,1-dimethylurea, 3-(3-chloro-4-methoxyphenyl)-1,1-dimethylurea or 3-(3-chloro-4-methylphenyl)-1,1-dinethylurea, and an inert carrier or diluent, which exerts a synertistically enhanced herbicidal potency.