Sweet Potato (Ipomoea batatas)
Hairy Caterpillar(Euchromia polymena)
Symptoms
- Young larvae feed gregariously mostly on the under surface of the leaves
- Feed on leaves and causes defoliation
- In severe cases only stems are left behind
Management
- Pre-monsoon deep ploughing (two/three times) will expose the hibernating pupae to sunlight and predatory birds
- Removal and destruction of alternate wild hosts and weeds which harbour the hairy caterpillars
- Mass collection and destruction of eggs and just emerged caterpillars
- Grow trap crops like cowpea, castor and jatropha on field bunds to attract the caterpillars
- Spraying of quinalphos 25 EC (2 ml/lit) or chlorpyriphos 20 EC (2.5 ml/lit) or Dichlorvos 76% EC (2.0 ml/lit) recommended when the caterpillars are younger
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 | Quinalphos 25 EC | Agroquin, Anuphos, Guin Guard Tagquin, H.LX, Hilquin Geelux, Kinalaux Exalux, Krilux, Quinaswan Flash, Quincid Starlux, Rambalux Quinolux | Yellow | 2 ml | 20 ml | 400 ml | 1000 ml | |
Extremely Toxic
Highly Toxic
Moderately Toxic
