Triệu chứng Round or oval sunken patches of dead bark (cankers) can be observed on trunks and branches. Infections often begin at around wounds or buds of twigs and young branches in the form of reddish sunken lesions. The lesions later grow into a canker that may be girdle and
Fruit Tree Canker
Nấm
Triệu chứng
Round or oval sunken patches of dead bark (cankers) can be observed on trunks and branches. Infections often begin at around wounds or buds of twigs and young branches in the form of reddish sunken lesions. The lesions later grow into a canker that may be girdle and kill the branches in a single season. On larger branches, they have the form of brownish-red, concave, sunken spots that later burst open and show open dead wood exposed in the center. The dead bark shows concentric rings accumulated over the years and the typical raised edges. Branches above the canker are weakened and progressively die. Developing fruits are sometimes attacked, and will show a dry “eye rot” around the calyx.
