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Powdery Mildew: signs and treatment in Jamaica
A common fungal disease covering leaves in a white powder. Thrives in high humidity but does not require leaf wetness. PlantArmor's crop guides list powdery mildew as a common problem on cucumber and watermelon.
Signs to look for
- White powdery fungal growth on upper leaf surfaces
- Leaves may turn yellow and drop prematurely
- Stunted growth and poor fruit quality
What to do
Crops it affects
Questions growers ask
How do I recognise powdery mildew?
A common fungal disease covering leaves in a white powder. Thrives in high humidity but does not require leaf wetness. The signs to look for: White powdery fungal growth on upper leaf surfaces. Leaves may turn yellow and drop prematurely. Stunted growth and poor fruit quality.
What should I do about powdery mildew?
Apply a fungicide whose label lists powdery mildew, such as Amistar, Score or Inspire Gold, rotating groups. Timorex Gold is an organic option. 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 powdery mildew in Jamaica?
PlantArmor's crop guides list powdery mildew as a common problem on cucumber and watermelon.
Check it in the field
The PlantArmor app works with no signal, so you can compare what you are seeing against its reference library 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.