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FIG.01 — Bacterial speck, diseaseTap to enlarge
Plant part
Leaf · Stem · Fruit
P. persimilis
INTERVAL REQUIRED
DiseaseProblem 06 / 32
Bacterial speck
Symptoms
Tiny dark brown-to-black leaf spots, sometimes with a yellow halo; may also affect stems and fruit.
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
Use tested/treated seed and resistant varieties where available. Avoid working wet plants, disinfect tools, remove residue, and use drip irrigation.
Product / label options
PRODUCT / LABEL OPTIONS: Copper products may suppress disease only when labeled; do not expect curative control and follow resistance and phytotoxicity precautions.
Active ingredients
copper hydroxidecopper oxychloridepotassium phosphitechlorothalonil
Organic active ingredients
copper hydroxidecopper oxychloride
P. persimilis: allowed / avoid
PERSIMILIS STATUS: INTERVAL REQUIRED. Respect the listed pre-release interval before releasing Phytoseiulus persimilis; verify the exact formulation.
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.
