Description:

• Continuous drizzling and wet weather are favourable conditions for the occurrence of this disease.

Damage Symptoms:

• This fungus can affect the cabbage crop at any stage of growth.
• Brown cankers appear near the base of the stem.
•  Cankers enlarge and girdle the stem.
• Severe black discolouration of the sap stream can be seen when the stem is split open.
• Attacked roots also show dark brown cankers.
•  The root system decays from the bottom upwards.

Preventive Measures:

• Practice deep summer ploughing.
• Maintain proper soil drainage.

Control Measures:

• Drench with copper oxychloride or carbendazim.