Gall midge
To prevent gall midge spray the below insecticide.
Plant parts affected
Shoot
Initial diagnosis:
Formation of a hollow cavity or tubular gall at the base of the infested tiller.
Symptoms:
The presence of silver shoot or “onion leaf” in the place of the central leaf is the prominent symptom.
Damage type:
Infested tillers produce no panicles.
Take a picture of the disease and get a solution