Fruit initially develop pale yellowish discoloration on
the side exposed to sunburn.
|
Advanced sunburn causes extensive black, brown, or red
discoloration. Sunburn damage is often circular and necrotic,
resembling other causes of damage such as fruit rot fungi and
wildland fire. |
Leaves develop chlorotic then necrotic blotches, initially
between the veins. Brown to purplish, roughened bark forms
on upper side of small branches (left) that are sunburned.
|
Cracked bark and elongate cankers can develop on branches exposed to direct afternoon
sunlight. Other abiotic disorders, certain pathogens, and vertebrates also
cause branch cankers. |
