Downy Mildew

Sweet Corn

Name: Downy Mildew

Scientific Name: Peronosclerospora sorghi

Crop: Sweet Corn

Description:

  • The pathogen thrives in areas characterized by high moisture levels and low temperatures.

Damage Symptoms:

  • Pale yellow streaks occur on the leaves, which later turn brown.
  • A downy white fungal growth appears on the underside of leaves.
  • Severely infected plants become stunted, impeding the development of healthy cobs.

Preventive Measures:

  • Practice crop rotation.
  • Avoid water logging conditions.

Control Measures:

  • Foliar spray of Metalaxyl at 2 g/l.