Powdery Spots on Fruit and Leaves


Powdery Mildew

Scientific Name: Oidium caricae

 

Disease Type: Fungus

 

Plants Affected: 

Papaya, cucumber, cucurbits, mango, mock orange, plumeria, poinsettia, rose, tomato

 

Symptom:

  • Water-soaked spots and powdery patches on underside of leaves
  • Powdery spots on immature fruit, which turn into gray scars and deformed fruit shape

 

Control:

  • Manage humidity levels (i.e. Plant in low-rainfall areas, improve aeration between plants)
  • Remove and destroy heavily mildewed leaves from site
  • Foliar application of fungicide or sulfur

 

Additional Resources:

 

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