Leaf Blight

Sweet Corn

Name: Leaf Blight

Scientific Name: Exserohilum turcicum

Crop: Sweet Corn

Description:

  • Warm and humid conditions are favourable for the occurrence of this disease.

 Damage Symptoms:

  • Water-soaked, greyish-tan elongated spots with dark borders appear on the leaves.
  • Later, characteristic cigar-shaped lesions can be observed on the leaves.
  • As lesions grow, leaves may dry out due to decreased photosynthetic ability.
  • Heavy infections can cause premature leaf senescence.

Preventive Measures:

  • Remove infected plants from the field.

Control Measures:

  • Application of Mancozeb at 2 g/l.