The splitting of the pit is caused by rapid growth of the fruit and by excessive watering or watering irregularly (a good irrigation after a dry cycle). ... Irregular irrigation, as mentioned above under split pits, can also cause skin cracking. Too much fertilizer or fertilizer applied too late is another cause.

Why is my fruit splitting?

Fruit split is a condition, not a disease, as it is caused by an irregular supply of water. The splits usually occur when rain follows a protracted dry spell and the sudden availability of moisture causes the fruit to swell too quickly.

How do you keep fruit from splitting?

Calcium reduces incidence of cracking or splitting

Nutrient sprays used pre-harvest will also improve the osmotic gradient across the fruit skin, minimising the flow of water into the fruit. Calcium sprays targeted to the fruits increased the calcium content and helped to reduce cracking in sweet cherries and plums.