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Split pits and pit shattering are caused by cold or freeze damage during bloom and/ or rapid early fruit expansion. Split pit is often, but not always, evident as an opening at the stem end of fruit, which exposes fruit to internal decay. Rapid expansion of the flesh splits or shatters the pit. Early and very late maturing varieties are much more prone to this problem as fruit expansion may begin before pits harden. Shattered pits, which may be accompanied by internal gumming, are generally not evident until the fruit is cut open. Shattered pits tend to be found closer to the blossom end of fruit.

Split pit external symptoms.

(Photo: John Strang, University of Kentucky)

Split pit internal damage.

(Photo: John Strang, University of Kentucky)

Management:

• Leave slightly heavier crops on early and very late maturing varieties to help reduce fruit size and rapid fruit growth.
• Avoid excessive nitrogen fertilization. 

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