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Early Blight: signs and treatment in Jamaica
Fungal disease (Alternaria) starting on lower older leaves, characterized by concentric ring lesions. PlantArmor's crop guides list early blight as a common problem on tomato and irish potato.
Signs to look for
- Dark brown spots with concentric 'bullseye' rings
- Yellow halo around spots
- Starts on lower foliage and moves up
What to do
Crops it affects
Questions growers ask
How do I recognise early blight?
Fungal disease (Alternaria) starting on lower older leaves, characterized by concentric ring lesions. The signs to look for: Dark brown spots with concentric 'bullseye' rings. Yellow halo around spots. Starts on lower foliage and moves up.
What should I do about early blight?
Remove infected lower leaves. Apply Chlorothalonil or Copper fungicides. Ensure proper crop rotation. Always read the product label and observe the registered rate, re-entry period and pre-harvest interval before you apply any pesticide.
Which crops are affected by early blight in Jamaica?
PlantArmor's crop guides list early blight as a common problem on tomato and irish potato.
Check it in the field
PlantArmor's reference library works offline, so you can compare what you are seeing against it standing in the plot, then log the spray you use along with its re-entry and pre-harvest intervals. Free to use.
This description and treatment come from the same reference library the PlantArmor app uses in the field. Pesticide registrations and permitted uses change — always read the current product label and observe the stated rate, re-entry period and pre-harvest interval.