Description:

• Downy mildew occurs mainly in cool, wet conditions, particularly during the initial stages of winter.

Damage Symptoms:

• Small, pale yellow angular spots appear on the upper surface of leaves, with downy growth on the underside.
• The spots coalesce, causing the leaves to shrivel and dry up prematurely.
• Stems exhibit dark brown, depressed lesions or streaks, which later develop downy fungal growth.

Preventive Measures:

• Remove and destroy infected plant debris.

Control Measures:

• Spray Metalaxyl @ 0.25% or Mancozeb @ 0.2%.