Rust is a general term for a large family of fungi that cause discoloured and distorted leaves.
Prune infected shoots off plants. Remove and destroy infected plant parts.
For control, use SUPER SPECTRUM or THIRAM FUNGUS CONTROL from the standard Kiwicare disease control range.
For a natural alternative, rust can be effectively controlled by ORGANIC COPPER OXY or ORGANIC SUPER SULPHUR.
Once infestation is under control, use SPECTRUM as a prevention treatment.
Rust is a general term that refers to a rather large family of fungi that attack plants. Rust infections cause leaf marks of yellow, orange, brown and black and infection may twist and distort the leaves. Note that rusty coloured patches on leaves may also be caused by nutrient deficiencies, sunburn and wind.
Rust diseases are coused by fungi of the order Pucciniales.