Orchid (Dendrobium sp.)
Mealy Bugs (ferrisia virgata)
Symptoms
- Mealy bugs cover the stem and leaf of the plant and sucks the sap. They secrete honeydew which attract ants.
- Sooty mould may develop on the leaves.
- Affected plants lose vigor.
Management
- Hang yellow sticky (castor oil coated) traps @ 20 no/ha.
- Spray neem garlic emulsion (20 ml neem oil + 20 gram garlic paste + 5 gram bar soap/litre of water).
- Spray Lecanicillium lecanii (synonym Verticillium lecanii) at the rate of 20 g/litre of water.
- Lady bird beetles (Cryptolaemus montrouzieri and Scymnus sp). are known to feed mealy bugs.
Chemcial Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Knapsack Sprayer (Capacity 10L) | 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 |
Extremely Toxic
Highly Toxic
Moderately Toxic
