Onion (Allium cepa L.)
Onion maggot (Delia antiqua)
Symptoms
- The flies lay their eggs on old leaves or on soil and larva enters into soil and damage disc portion of onion bulb.
- Infested plants turn yellowish brown and finally dry up.
- The affected bulbs rot in storage.
Management
- Follow crop rotation.
- Avoid planting in soils that are high in undecomposed organic matter.
- Avoid close spacing.
- Apply neem cake in the soil before transplanting.
Chemical Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Knapsack Sprayer (Capacity 10L) | Recommendation | Remarks | |
|---|---|---|---|---|---|---|---|---|
| Dosage/acre (200 L) | Dosage/hectare (500 L) | |||||||
| 1 | Dimethoate 30 EC | Nugor, Rogor, Tagor, Tara 909, Label colour | Yellow | 1 ml/ litre of water | 10 ml | 200 ml | 500 ml | - |
Extremely Toxic
Highly Toxic
Moderately Toxic
