Fruit firmness - measured in imperial pounds (lbs)4
or kilos of pressure - is one of the most important
quality aspects of an apple. In some years, apple firmness declines faster than in other years - no
single factor can result in consistent firmness, and a grower’s experience and judgment are
important when assessing fruit firmness.
Fruit destined for long term CA storage should have pressures of 15lbs firmness, or higher. CA
storage helps maintain fruit firmness, and different levels of oxygen in store have different effects.