Black Rot

Cabbage

Name: Black Rot

Scientific Name: Xanthomonas campestris pv. campestris

Crop: Cabbage

Description:

  • Black rot is a bacterial disease.
  • Temperatures ranging from 25 to 30°C and frequent rains are favorable conditions for the occurrence of this disease.

Damage Symptoms:

  • V-shaped chlorotic to yellow lesions develop from the leaf margin inward.
  • Black streaks or lesions occur in the vascular tissues of plants.
  • Cabbage heads are discoloured.
  • Infected plants wilt and eventually die.

Preventive Measures:

  • Remove and destroy diseased plants.
  • Maintain proper drainage.

Control Measures:

  • Drench with copper oxychloride.