How to control cucumber anthracnose? Apply "Zanxiu" to control cucumber anthracnose—do not wait until the disease spreads over a large area before spraying.

Anthracnose of cucumber is a common disease on cucumber, and its occurrence is 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 cucumber anthracnose lies in early prevention and the selection of appropriate fungicides—Zanxiu 60% Iprodione + Thiophanate-methyl Wettable Powder is registered for use against cucumber anthracnose and can be applied by foliar spraying according to the label instructions.

Anthracnose of cucumber 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, spraying is often too late. Therefore, it is advisable to make frequent field inspections and apply the first fungicide spray as soon as lesions are first observed on cucumber leaves, thereby suppressing the pathogen at an early stage.

Zanxiu 60% Iprodione + Thiophanate-methyl Wettable Powder, Registration No. PD20181947 (subject to the actual label). Primarily controls cucumber anthracnose. Apply at 40–60 g per mu diluted with water as a foliar spray. 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 iprodione-thiophanate-methyl wettable powder can readily induce pathogen resistance. It is recommended to rotate with fungicides of different modes of action. For specific dosage and water volume, always refer to the product label, as local crop varieties and weather conditions vary—do not simply copy others' application regimens.