Aliconazole is used as a fungicide for preventing and treating fungal diseases in plants, particularly in crops and ornamental plants. It inhibits the growth of fungi that cause diseases such as powdery mildew, leaf spot, and rot. It can be applied by spraying on plant leaves or drenching the soil to prevent fungal spread. Aliconazole is effective against resistant fungi, making it a key option for managing plant diseases in agriculture.