Tree Fruit Research & Extension Center

Cullage Assessment & Education

Quick Identification Guide to Apple Postharvest Defects & Disorders Cards

Mechanical & Field Injury

The Mechanical & Field Injury section of the card set includes many of the injuries that occur to applesprior to harvest. This includes problems such as bruising and weather induced defects, except sunburn, which is covered in the Fruit Finish section. At a later date more cards may be developed for this section which would include any emerging or reclassified disorders. For ordering information visit the Order Information section of the Introduction. The cards shown on this site are slightly modified to accomodate web formatting. Figures may appear fragmented in some browsers. Please report viewing problems here. Any reproduction of the card images or content without permission is in violation of WSU Copyright policies.

 

 

MECHANICAL/FIELD INJURY: Hail  

Hail Injury

Hail damage can occur any time during the growing season. What the damage looks like at harvest will depend on how mature the fruit was and how large and hard the hail was it struck. A hard impact early in the season could cause a very deep depression and deformation of the fruit. Later-season damage could appear more bruiselike.

Figure 1: Damage to this Red Delicious probably occurred midsummer, leaving a noticeable depression. Cracking is not uncommon. A mark like this can be confused with insect damage. Notice that this fruit also has a large bin bruise unrelated to the hail mark.

 

 

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