Peaches with split pit are flattened at the blossom end of the fruit. Often symptoms are not seen until the fruit is cut open. The pit is torn apart or split along the dorsal-ventral suture.
Solutions
Peach split pit is caused by cultural practices that promote rapid growth such as excessive thinning or irregular watering during the pit hardening stage. Avoid thinning until after pits are mature and hard.
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