- Due to the presence of the larvae inside the berries, they appear larger in size.
- Such galled berries do not develop.
- Shoot galls are formed as a result of midge infestation on tender stalks.
Select 20 standards from the plot. Observe 10 spikes at random from each standard. Count the number of spikes showing the damage and work out the average.Less than 20- mild; 20-50 moderate;> 50 severe