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Black Rot: signs and treatment in Jamaica
A highly contagious bacterial disease of cabbage and crucifers. PlantArmor's crop guides list black rot as a common problem on crucifers (cabbage/broccoli).
Signs to look for
- V-shaped yellow lesions starting from leaf edges
- Blackening of veins within the lesions
- Foul smell and stem rot
What to do
Crops it affects
Questions growers ask
How do I recognise black rot?
A highly contagious bacterial disease of cabbage and crucifers. The signs to look for: V-shaped yellow lesions starting from leaf edges. Blackening of veins within the lesions. Foul smell and stem rot.
What should I do about black rot?
Use certified disease-free seed. Apply Copper-based bactericides (preventative only). Destroy infected debris. 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 black rot in Jamaica?
PlantArmor's crop guides list black rot as a common problem on crucifers (cabbage/broccoli).
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.