For rust, it is recommended to use difenoconazole or myclobutanil or flusilazole or bromioconil or propiconazole or mesostrobin alternately. It is recommended to use mixed silicone better.

Note that difenoconazole, mefenoxystrobin, and bromystrobin are relatively safe.

Focus on prevention and comprehensive prevention and treatment. Alternate pesticide ingredients and do not use the same pesticide ingredients continuously. This is the principle of plant protection.