Horn/Nose Development

Description

Horn/nose development on tomato fruits is a genetic mutation. It occurs during early fruit development when a few of the cells divide incorrectly, forming an extra fruit locule. Locules are the cavity portion of the fruit surrounded by the pericarp (formed from the wall of the ripened ovary). High temperatures during the night and day can contribute to this mutation. Typically, only one or two fruits are affected on the plant.

Management

Older heirloom varieties of tomatoes tend to be more susceptible. Keeping plants shaded during hot temperatures may help reduce the chance of this mutation. Horn/nose development on the fruit will not affect the taste or quality.

Timing

Horn/nose development starts during fruit development on the plant.

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