Disease-controlling effect of a novel fungicide pyribencarb against Botrytis cinerea

摘要

Pyribencarb, methyl {2-chloro-5-[(ii)-1-(6-methyl-2-pyridylmethoxyimino)ethyl]benzyl}carbamate, is a novel fungicide having excellent activity against a wide range of plant pathogenic fungi, especially gray mold diseases caused by Botrytis cinerea. Pyribencarb exhibited not only a preventive effect but also a curative effect. When spraying was performed 48 hr after inoculation (after visible symptoms appeared), pyribencarb also showed strong inhibitory activity against lesion development by cucumber gray mold that was significantly superior to its preventive activity. Experiments in the greenhouse demonstrated good translaminar, rain fastness and residual activities, resulting in pyribencarb's high performance in the field. Pyribencarb was effective to control eggplant gray mold and kidney bean gray mold at 100-200 μg/ml in field trials.