Rice (Oryza sativa)
Rice Mealy Bug ( Brevennia rehi )
Symptoms
- Large number of insects remains in leaf sheath and suck the sap.
- Weak yellowish stunted plants are seen in circular patches.
- Presence of white waxy fluff in leaf sheath is a typical symptom of damage.
- The Mealy bug is small reddish white, soft-bodied, wingless insect covered with filamentous materials.
Management
- Parasitoids such as Adelencyrtus sp., Xanthoencyrtus sp. and Dolichoceros sp. and Coccinellid predators can be utilised.
- Remove and destroy the affected plants.
- Remove the grasses and trim the bunds during the main field preparations before transplanting.
Chemical Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Knapsack Sprayer (Capacity 10L) | Dosage/acre (200 L) | Dosage/hectare (500 L) | Remarks |
|---|---|---|---|---|---|---|---|---|
| 1 | Dimethoate 30 EC | Nugor, Rogor, Tagor, Tara 909 | Yellow | 1.5 ml/ litre of water | 15 ml | 300 ml | 750 ml |
Extremely Toxic
Highly Toxic
Moderately Toxic
