ANTIFUNGAL COMPOSITION FOR CONTROL OF PLANT POWDERY MILDEW COMPRISING CHRYSOPHANOL OR PARIETIN AS ACTIVE INGREDIENT

摘要

PURPOSE: Provided is an antifungal composition for the control of plant powdery mildew comprising chrysophanol or parietin as an active ingredient. The parietin and chrysophanol have more excellent control effect on plant powdery mildew than fenarimol and polyoxin A, respectively. CONSTITUTION: An antifungal composition for the control of plant powdery mildew is characterized by comprising chrysophanol represented by the formula(1) or parietin represented by the formula(2), as an active ingredient, in the amount of 0.12-200μg/ml. The chrysophanol or parietin is obtained by extracting Rumex crispus and Rumex japonica.