Downy mildew

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A.M. Varela, icipe
Is this a Minor Pest?
Minor Pest Title

Downy mildew (Peronospora pisi)

Minor Pest Description

The fungal growth over leaf and pod is the most striking symptom. The fungal growth occurs on the lower leaf surface as well as on pods. Initially it is white but later it changes to a shade of violet and eventually to almost black. The disease may appear on pods even when it is not apparent on leaves. Affected pods show yellowish brown areas. Inside of the affected pods a white fungal growth can be seen. Peas in such pods are small and have brown spots. The disease is favoured by cool and moist conditions.


Minor Pest What to do.
  • Use certified disease-free seeds.
  • Use resistant varieties, if available.
  • Practice crop rotation. Rotate with non-legumes.
Minor Pest Position
Minor Pest Firstcontent
Pest Type
Other Crops
Grapes, hops
Host Plants