Evaluation of benzenesulfonanilide derivatives for the control of crucifers clubroot

Abstract

On the basis of the hypothesis that sulfonanilide moiety had a control effect on clubroot of crucifers caused by Plasmodiophora brassicae, newly synthesized benzenesulfonanilides with various substituents were evaluated for the control of this disease. In general, 2-chloro-4-trifluoromethylanilide and 2-chloro-4-nitroanilide derivatives showed a relatively high efficacy. Among them, flusulfamide (2', 4-dichloro-α, α, α-trifluoro-4'-nitro-m-toluenesulfonanilide) was one of the most active derivatives. The fungicidal activity of flusulfamide and its related compounds is discussed in this paper.