Cowpea (Vigna unguiculata)
Leaf crinkle virus(C.O.: Leaf crinkle virus)
Symptoms
- Chlorosis around some lateral veins and its branches near the margins.
- Leaves show curling of margin downwards.
- Some of the leaves show twisting.
- Veins show reddish brown discolouration on the under surface.
Management
- Grow resistant varieties.
- Place yellow sticky traps (12 no/ ha).
- Rogue out the infected plants up to 45 days.
- Foliar spray of neem formulations (3 ml/ litre of water) at 30 days after sowing
Chemical Control
- Spray Dimethoate 30 EC (2 ml / litre of water) against the vector.
| 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 | Yellow | 1 ml | 10 ml | 200 ml | 500 ml | |
Extremely Toxic
Highly Toxic
Moderately Toxic
