Description:

• Diamondback moth infestations typically occur in dry weather, especially in early winter.
• The infestation of this pest is most common during the seedling and vegetative stages.

Damage Symptoms:

• Leaves show small holes, resulting in a ‘shot hole’ appearance.
• Severe infestations lead to skeletonized leaves.
• Reduced plant vigour and low head quality.

Preventive Measures:

• Install pheromone traps in the field.

Control Measures:

• Foliar spray with endosulfan (2 ml) or spinosad (0.3 ml/l).