Cauliflower (Brassica oleracea var. botrytis)
Tobacco caterpillar (Spodoptera litura)
Symptoms
- Feed on leaves and fresh growth.
- Young caterpillars bite holes on leaves
- Older larvae defoliate entire foliage
Management
- Clean cultivation to expose the larvae to natural enemies
- Pheromone traps to predict egg laying.
- Hand picking and destruction of egg masses and early gregarious instars.
- Plough the soil to expose and kill the pupae
- Grow castor along border and irrigation channel as trap crop
- Flood the field to drive out the hibernating larvae
- Set up light trap @1/ha
- Spray of neem seed kernel extract @ 4.0 per cent at early growth stage of the crop.
- Spray of SlNPV @ 250 LE per hectare
- Natural enemies like Bracon sp, Telenomus sp , Bt and entomopathogenic fungi
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 | Malathion 50 EC | Agromala, Agromala Malathion, Celthion, Hilmala, Kthion, Malaacid, Simala Milthion, Tagthion Malamar, Thisol | Blue | 2 ml/ litre of water | 20 ml | 400 ml | 1000 ml | - |
| 2 | Chlorpyriphos 50 EC | Chlorban, Dhanvan 5000 Force, Predator | Yellow | 1.5 ml/ litre of water | 15 ml | 300 ml | 750 ml | - |
| 3 | Dichlorvos 76 EC | Divap, Divipan, Doom, Fume, Hilvos Luvon-76, Nuvan, Starchlor, Vapona | Yellow | 1 ml/ litre of water | 10 ml | 200 ml | 500 ml | - |
Extremely Toxic
Highly Toxic
Moderately Toxic
