Blossom-end rot

Symptoms

Dark sunken leathery lesion at blossom end; associated with irregular water supply and calcium transport stress.

How to verify

Compare the photos above with the plant, and check the symptom description against the look-alike records below before acting. The source guide does not carry a separate laboratory verification note for this record.

Next step

Maintain even soil moisture, mulch, avoid excessive nitrogen, and test soil before adding lime or calcium. Remove affected fruit.

Product / label options

PRODUCT / LABEL OPTIONS: Foliar calcium sprays rarely correct the underlying problem.

P. persimilis: allowed / avoid

*N/A - No foliar pesticide applied*

Label matters

Active ingredients below are examples, not universal prescriptions. Confirm the diagnosis; use only products registered for tomato and the target problem in your country; and follow the current label for dose, pre-harvest interval, worker protection, compatibility and re-entry. Rotate IRAC/FRAC modes of action. When symptoms are uncertain, obtain a laboratory or extension diagnosis. Integrated pest management (IPM)—sanitation, resistant varieties, irrigation management, monitoring and biological control—should be the first line of defense.

Look-alikes to rule out