Ginseng gray mold is a common disease on ginseng, with its occurrence closely related to overcast and rainy weather as well as high humidity. Once the disease develops, it causes leaf spotting and premature defoliation, thereby reducing yield. The control of ginseng gray mold emphasizes early prevention and the selection of targeted fungicides—Diethofencarb·Carbendazim 50% WP is registered for use against ginseng gray mold and can be applied by foliar spraying according to the label instructions.
Gray mold of ginseng typically first shows symptoms on the leaves, with lesions spreading from the lower to the upper parts of the plant and increasing in number over time. In the early stage, the symptoms are inconspicuous; by the time the lesions coalesce into larger patches and spraying is initiated, it is often already too late. Therefore, frequent field scouting is essential—apply the first fungicide spray as soon as lesions are first observed on ginseng plants, so as to suppress the pathogen at its source.
Diethofencarb · Carbendazim 50% Diethofencarb · Carbendazim Wettable Powder, Registration No. PD20100566 (subject to the actual label). Primarily controls ginseng gray mold, and is also effective against tomato gray mold. Apply by foliar spray at 100–130 g per mu, diluted with water. Spray at the early stage of disease onset, and a second application may be made at intervals of 7–10 days depending on disease severity. Ensure sufficient water volume and thoroughly wet the affected plant parts.
Prolonged and continuous use of fungicides such as diethofencarb·carbendazim wettable powder can readily induce resistance in pathogenic fungi. It is recommended to rotate with fungicides of different modes of action. For specific dosage rates and water volumes, always refer to the product label, as local crop varieties and weather conditions vary; do not indiscriminately copy application regimens used by others.
