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Coffee Leaf Rust (ROYA): signs and treatment in Jamaica
The most economically important coffee disease, causing massive defoliation. PlantArmor's crop guides list coffee leaf rust (ROYA) as a common problem on coffee.
Signs to look for
- Pale yellow spots on upper leaf surfaces
- Orange, powdery spore masses on the underside
- Severe defoliation leading to dieback
What to do
Crops it affects
Questions growers ask
How do I recognise coffee leaf rust (ROYA)?
The most economically important coffee disease, causing massive defoliation. The signs to look for: Pale yellow spots on upper leaf surfaces. Orange, powdery spore masses on the underside. Severe defoliation leading to dieback.
What should I do about coffee leaf rust (ROYA)?
Apply Copper-based fungicides preventatively. Ensure proper pruning for light penetration. 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 coffee leaf rust (ROYA) in Jamaica?
PlantArmor's crop guides list coffee leaf rust (ROYA) as a common problem on coffee.
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.