The most recent issue of the Cornell Fruit Handling and Storage Newsletter provides controlled atmosphere storage information by variety. Cortland - CA storage allows marketing of Cortland until March. Although Cortland is often stored at 32 F, it may be temperature sensitive. Low oxygen conditions may increase low temperature breakdown and vascular browning. Cortland is preferably stored under the same CA storage conditions as McIntosh.
Large fruit are prone to bitter pit and senescent breakdown.
Delicious - CA delays the onset of mealiness and lengthens the shelf life of Delicious apples. The variety is particularly susceptible to scald and must be treated with DPA prior to storage. However, this technique is still being evaluated for safety under New York conditions and should not be attempted by storage operators. Early harvest, application of rapid CA procedures and computer control of atmospheres will reduce risk of injury. Low ethylene technology is used for storage of Empire apples by several storage operators.