Citrus scab is a common disease on citrus trees, 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 key to controlling citrus scab lies in early prevention and the selection of appropriate fungicides—Lanyi 50% Benomyl Wettable Powder is registered for use against citrus scab on citrus trees and can be applied by foliar spraying according to the label instructions.
Citrus scab typically first shows symptoms on leaves, with lesions spreading from lower to 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 patches and spraying is initiated, it is often already too late. Therefore, frequent field scouting is essential—apply the first spray as soon as lesions appear on citrus trees to suppress the pathogen at its source.

Lanyi 50% Benomyl Wettable Powder, Registration No. PD20096853 (subject to the actual label). Primarily used for the control of citrus scab (Elsinoë fawcettii). Dilute at a rate of 500–600× with water and apply as a foliar spray. Spray at the early stage of disease development, and a repeat 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 benomyl wettable powder can readily induce pathogen resistance. 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. Since crop varieties and weather conditions vary by region, do not directly copy application regimens used elsewhere.