Cymoxanil + Mancozeb fungicide is a combination of two active ingredients, and it is commonly used for the control of various fungal diseases in crops. The specific uses of this fungicide combination may vary depending on the formulation and the crops targeted. However, here are some general applications:

1. Downy Mildew Control: Cymoxanil + Mancozeb is often employed to combat downy mildew infections in crops such as grapes, potatoes, and cucurbits.
2. Late Blight Management: It is effective in managing late blight, a destructive disease affecting crops like tomatoes and potatoes.
3. Leaf Spot Prevention: The fungicide is used to prevent and control leaf spot diseases in various crops, including vegetables and fruits.
4. Disease Suppression in Grapes: Cymoxanil + Mancozeb can be utilized to suppress diseases like downy mildew in grapevines.
5. Potato Blight Control: In potatoes, the fungicide is commonly applied to control blight caused by certain fungi.
6. Tomato Diseases: It helps in protecting tomatoes from fungal infections, including late blight.
7. Cucurbit Protection: Crops like cucumbers, pumpkins, and squash can benefit from the application of this fungicide for protection against specific fungal diseases.

Always refer to the product label and follow recommended application rates and guidelines. Additionally, consider local regulations and recommendations for specific crops and diseases in your region.