Symptoms of damage

• Dark brown encrustation on the pod wall
• Dry pods showing pin head size hole
• Seeds shriveled, striped and partially eaten
• Maggots cause damage by boring into the soft seeds and feed on grains.
• The damaged seeds are unfit for consumption as well as for germination.
• The extent of damage may be even upto 60-70% during severe infestation.

Identification of the pest

• Eggs: Eggs are laid by them singly or in cluster inside the pod wall by piercing through the ovipositor. The fly lays about 60-80 eggs. Incubation period is 2-4 days.
• Larva: Larval period is about 5-18 days
• Pupa: Pupal period varies from 7-10 days. A number of overlapping generations are found in a year.

Management

• Conserve natural enemies like Euderus lividus, Eurytoma sp., Euderus agromyzae
• Spray Carbaryl 50 WP 1.5 kg or lambda cyhalothrin 5 EC 400 -500 ml or Lufenuron 5.4 EC 2.5 L with 700 L water/ha