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Late Blight: signs and treatment in Jamaica
Highly destructive oomycete (Phytophthora infestans) that can destroy a crop in days under cool, wet conditions. PlantArmor's crop guides list late blight as a common problem on tomato and irish potato.
Signs to look for
- Large, water-soaked, irregular leaf spots
- White fuzzy mold on leaf undersides in high humidity
- Rapid browning and collapse of foliage
What to do
Crops it affects
Questions growers ask
How do I recognise late blight?
Highly destructive oomycete (Phytophthora infestans) that can destroy a crop in days under cool, wet conditions. The signs to look for: Large, water-soaked, irregular leaf spots. White fuzzy mold on leaf undersides in high humidity. Rapid browning and collapse of foliage.
What should I do about late blight?
Apply systemic fungicides (Mefenoxam, Dimethomorph) immediately. Destroy severely infected plants. 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 late blight in Jamaica?
PlantArmor's crop guides list late 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.