Sunburn

Sunburn on apples is caused by bright sun and high temperatures in the orchard before or shortly after harvest. The affected roundish spot on the apple is usually only slightly discoloured. But in more serious cases, the burnt skin becomes browner or even black, and the fruit flesh can also be damaged. The symptoms can become more severe during storage and is then also called sunscald. Darkened lenticels, sometimes cracked, can also be part of extreme sunburn.