Twig blight

Nectria twig blight is a minor disease that results in dieback of apple twigs. It is caused by the fungus Nectria cinnabarina (Tode) Fr., asexual state of Tubercularia vulgaris Tode. Recognition of the disease is important because it is often confused with fire blight, which requires different control measures.
The disease is not usually severe enough to require special control measures. As a result, chemical control procedures have not been developed. Removal of infected twigs helps reduce the carryover of inoculum.