Structure-Activity Relationships in a Series of Fungicidal Pyrazole Carboxanilides

Abstract

All possible 1-methylpyrazole carboxanilides and their mono- and dimethyl derivatives have been synthesised and assessed for their effectiveness in inhibiting the mycelial growth of Rhizoctonia solani and for the control of root rot disease caused by that organism in cotton seedlings. The structural requirements for activity are discussed and compared with previous assessments of general structure-activity relationships in carboxamide fungicides.